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		<item>
		<title>Ecuaciones de 1er grado con denominadores</title>
		<link>http://antoniojesussl.wordpress.com/2010/01/10/ecuaciones-de-1er-grado-con-denominadores/</link>
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		<pubDate>Sun, 10 Jan 2010 19:03:00 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
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		<description><![CDATA[Ecuaciones con denominadores<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=117&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><a href="http://antoniojesussl.files.wordpress.com/2010/01/ecuaciones-con-denominadores.doc">Ecuaciones con denominadores</a></p>
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		<title>Ejercicios de ecuaciones de 2º grado</title>
		<link>http://antoniojesussl.wordpress.com/2010/01/10/ejercicios-de-ecuaciones-de-2%c2%ba-grado/</link>
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		<pubDate>Sun, 10 Jan 2010 18:37:18 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[01)   x2 = 81       02)   14x2 &#8211; 28 = 0       03)   (x + 6)(x &#8211; 6) = 13       04)   (2x &#8211; 5)(2x + 5) &#8211; 119 = 0       05)   (x + 11)(x &#8211; 11) = 23     [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=113&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<table border="0">
<tbody>
<tr>
<td><span style="font-size:medium;">01)</span></td>
<td> </td>
<td><span style="font-size:medium;">x<sup>2</sup> = 81</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">02)</span></td>
<td> </td>
<td><span style="font-size:medium;">14x<sup>2</sup> &#8211; 28 = 0</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">03)</span></td>
<td> </td>
<td><span style="font-size:medium;">(x + 6)(x &#8211; 6) = 13</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">04)</span></td>
<td> </td>
<td><span style="font-size:medium;">(2x &#8211; 5)(2x + 5) &#8211; 119 = 0</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">05)</span></td>
<td> </td>
<td><span style="font-size:medium;">(x + 11)(x &#8211; 11) = 23</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">06)</span></td>
<td> </td>
<td><span style="font-size:medium;"><strong>x</strong><sup><strong>2</strong></sup><strong> = 7x</strong></span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">07)</span></td>
<td> </td>
<td><span style="font-size:medium;">21x<sup><strong>2 </strong></sup><strong>+ </strong>100 = &#8211; 5</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">08)</span></td>
<td> </td>
<td><span style="font-size:medium;">2x<sup><strong>2</strong></sup> &#8211; 6x = 6x<sup><strong>2</strong></sup> &#8211; 8x</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">09)</span></td>
<td> </td>
<td><span style="font-size:medium;">(x &#8211; 3)<sup><strong>2</strong></sup> &#8211; (2x + 5)<sup><strong>2</strong></sup> = &#8211; 16</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">10)</span></td>
<td> </td>
<td><span style="font-size:medium;">(4x &#8211; 1)(2x + 3) = (x + 3)(x &#8211; 1)</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">11)</span></td>
<td> </td>
<td><span style="font-size:medium;">x<sup><strong>2</strong></sup> + 12x + 35 = 0</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">12)</span></td>
<td> </td>
<td><span style="font-size:medium;">x<sup><strong>2</strong></sup> &#8211; 3x + 2 = 0</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">13)</span></td>
<td> </td>
<td><span style="font-size:medium;">x<sup><strong>2</strong></sup> + 4x =285</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">14)</span></td>
<td> </td>
<td><span style="font-size:medium;">5x(x &#8211; 1) &#8211; 2(2x<sup>2</sup> &#8211; 7x) = &#8211; 8</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">15)</span></td>
<td> </td>
<td><span style="font-size:medium;">(x + 2)<sup><strong>2</strong></sup> = 1 &#8211; x(x + 3)</span></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">16)</span></td>
<td> </td>
<td><img src="http://sipan.inictel.gob.pe/internet/av/graficos/preg16.gif" alt="" width="95" height="33" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">17)</span></td>
<td> </td>
<td><img src="http://sipan.inictel.gob.pe/internet/av/graficos/preg17.gif" alt="" width="132" height="32" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">18)</span></td>
<td> </td>
<td><img src="http://sipan.inictel.gob.pe/internet/av/graficos/preg18.gif" alt="" width="77" height="37" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">19)</span></td>
<td> </td>
<td><img src="http://sipan.inictel.gob.pe/internet/av/graficos/preg19.gif" alt="" width="91" height="36" /></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td><span style="font-size:medium;">20)</span></td>
<td> </td>
<td><img src="http://sipan.inictel.gob.pe/internet/av/graficos/preg20.gif" alt="" width="110" height="31" /></td>
</tr>
</tbody>
</table>
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		<title>Ejercicios de ecuaciones de primer grado</title>
		<link>http://antoniojesussl.wordpress.com/2010/01/10/ejercicios-de-ecuaciones-de-primer-grado/</link>
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		<pubDate>Sun, 10 Jan 2010 18:07:39 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[Ecuaciones 1er grado<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=109&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><a href='http://antoniojesussl.files.wordpress.com/2010/01/ecuaciones-1er-grado2.doc'>Ecuaciones 1er grado</a></p>
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		<title>Ejercicios de Álgebra</title>
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		<pubDate>Mon, 07 Dec 2009 11:40:24 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Álgebra]]></category>
		<category><![CDATA[Matemáticas 2º ESO]]></category>
		<category><![CDATA[Números y letras]]></category>

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		<description><![CDATA[1 Realiza las operaciones con monomios y calcula el valor numérico del resultado si x = 1, y = -1, z = 2: a) 4xyz &#8211; 2yzx + 5zxy  b) &#8211; 3x2y · x + x3y  c) 4z2 · x &#8211; 5z · x · z 2 Encuentra una expresión algebraica para cada uno de los [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=82&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<table border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="27" valign="top">1</td>
<td width="693" valign="top"><strong>Realiza las operaciones con monomios y calcula el valor numérico del resultado si x = 1, y = -1, z = 2:</strong><strong> </strong><strong>a) 4xyz &#8211; 2yzx + 5zxy</strong><strong> </strong></p>
<p><strong>b) &#8211; 3x</strong><strong><sup>2</sup></strong><strong>y · x + x</strong><strong><sup>3</sup></strong><strong>y</strong><strong> </strong></p>
<p><strong>c) 4z</strong><strong><sup>2</sup></strong><strong> · x &#8211; 5z · x · z</strong></td>
</tr>
<tr>
<td width="27" valign="top">2</td>
<td width="693" valign="top"><strong>Encuentra una expresión algebraica para cada uno de los siguientes enunciados, simplificándola cuando sea posible:</strong><strong> </strong></p>
<h2>a) Un número impar.</h2>
<h2>b)  La mitad del producto de dos número.</h2>
<h2>c) En una caja hay b bolas blancas y el triple de bolas negras. ¿Cuántas hay en total?</h2>
<p><strong>d) Si p es el precio de unos pantalones y al pagarlos me descuentan el 20%, ¿cuánto pago por ellos?</strong></td>
</tr>
<tr>
<td width="27" valign="top">3</td>
<td width="693" valign="top"><strong>a) Completa la siguiente tabla sabiendo que la madre de Hugo hace 4 años tenía el triple de la edad de su hijo:</strong><strong> </strong></p>
<table border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="131"><strong> </strong></td>
<td width="131"><strong>Antes</strong><strong> </strong></td>
<td width="131"><strong>Ahora</strong><strong> </strong></td>
</tr>
<tr>
<td width="131"><strong>Edad de la madre</strong><strong> </strong></td>
<td width="131"><strong> </strong></td>
<td width="131"><strong> </strong></td>
</tr>
<tr>
<td width="131"><strong>Edad del hijo</strong><strong> </strong></td>
<td width="131"><strong> </strong></td>
<td width="131"><strong>x</strong><strong> </strong></td>
</tr>
</tbody>
</table>
<p><strong> </strong><strong> </strong></p>
<p><strong>b) Si Hugo tiene 20 años ¿Cuántos tiene su madre?</strong></td>
</tr>
<tr>
<td width="27" valign="top">4</td>
<td width="693" valign="top"><strong>Realiza las siguientes divisiones e indica el grado del monomio resultante:</strong><strong> </strong><strong>a) 4a</strong><strong><sup>2</sup></strong><strong>c</strong><strong><sup>3</sup></strong><strong> : 2ac</strong><strong> </strong></p>
<p><strong>b) 3mw</strong><strong><sup>2</sup></strong><strong>k : ( -mwk)</strong></p>
<p><strong><strong> </strong></strong></td>
</tr>
<tr>
<td width="27" valign="top">5</td>
<td width="693" valign="top"><strong>Efectúa las siguientes operaciones y reduce después términos semejantes:</strong><strong> </strong><strong>a) (a + 3) (a + 3) &#8211; 2a(a + 1) + (a + 2)(a &#8211; 2)</strong><strong> </strong></p>
<p><strong>b) 2b(a</strong><strong><sup>2</sup></strong><strong> + b) + (a &#8211; b) (a &#8211; b) &#8211; (a</strong><strong><sup>2</sup></strong><strong> &#8211; b)(b &#8211; 1)</strong><strong> </strong></p>
<p><strong>c) (x &#8211; 2y) (x &#8211; 2y) + 2y(2x &#8211; y) &#8211; 2x</strong><strong><sup>2</sup></strong></td>
</tr>
<tr>
<td width="27" valign="top">6</td>
<td width="693" valign="top"><strong>Escribe en forma de polinomio en una variable y opera:</strong><strong> </strong><strong>a) El cuadrado de un número, menos su doble, más su triple, menos cuatro</strong><strong> </strong></p>
<p><strong>b) El cuadrado del cubo de un número, menos el número elevado a 6, más 32.</strong><strong> </strong></p>
<p><strong>c) El área de un cuadrado de lado x, menos el área de un triángulo de altura x y base x.</strong></td>
</tr>
<tr>
<td width="27" valign="top">7</td>
<td width="693" valign="top"><strong>Desarrolla y opera:</strong><strong> </strong><strong>a) (x + 2)</strong><strong><sup>2</sup></strong><strong> &#8211; (x &#8211; 2)</strong><strong><sup>2</sup></strong><strong> </strong></p>
<p><strong>b) (4x + y)</strong><strong><sup>2</sup></strong><strong> &#8211; (4x &#8211; y)</strong><strong><sup>2</sup></strong><strong> </strong></p>
<p><strong>c) (x + 3) &#8211; (x + 2)(x &#8211; 2)</strong><strong> </strong></p>
<p><strong>d) (3x &#8211; 2)(x &#8211; 2) + (x &#8211; 1)</strong><strong><sup>2</sup></strong></td>
</tr>
<tr>
<td width="27" valign="top">8</td>
<td width="693" valign="top"><strong>Desarrolla las siguientes identidades notables:</strong><strong>a) (1,5a</strong><strong><sup>3</sup></strong><strong> + b</strong><strong><sup>2</sup></strong><strong>)</strong><strong><sup>2</sup></strong></p>
<p><strong>b) ( -11 &#8211; 3x</strong><strong><sup>5</sup></strong><strong>)</strong><strong><sup>2</sup></strong></td>
</tr>
<tr>
<td width="27" valign="top">9</td>
<td width="693" valign="top"><strong>Observa los ejemplos y calcula:</strong><strong> </strong><strong>Ejemplo 1: 9</strong><strong><sup>2</sup></strong><strong> &#8211; 8</strong><strong><sup>2</sup></strong><strong> = (9 &#8211; 8)(9 + <img src='http://s0.wp.com/wp-includes/images/smilies/icon_cool.gif' alt='8)' class='wp-smiley' /> = 1 · 17 = 17</strong><strong> </strong></p>
<p><strong>Ejemplo 2: 6</strong><strong><sup>2</sup></strong><strong> &#8211; 5</strong><strong><sup>2</sup></strong><strong> = (6 &#8211; 5)(6 + 5) = 1 · 11 = 11</strong><strong> </strong></p>
<p><strong>a) 30</strong><strong><sup>2</sup></strong><strong> &#8211; 29</strong><strong><sup>2</sup></strong><strong> </strong></p>
<p><strong>b) 47</strong><strong><sup>2</sup></strong><strong> &#8211; 46</strong><strong><sup>2</sup></strong><strong> </strong><strong> </strong></p>
<p><strong>c) 51</strong><strong><sup>2</sup></strong><strong> &#8211; 55</strong><strong><sup>2</sup></strong><strong> </strong></p>
<p><strong>d) 100</strong><strong><sup>2</sup></strong><strong> &#8211; 99</strong><strong><sup>2</sup></strong><strong> </strong></td>
</tr>
<tr>
<td width="27" valign="top">10</td>
<td width="693" valign="top"><strong>Deduce cuál es la fórmula para desarrollar las siguientes expresiones:</strong><strong></strong><strong>a) (a + b)</strong><strong><sup>3</sup></strong><strong></strong></p>
<p><strong>b) (a &#8211; b)</strong><strong><sup>3</sup></strong><strong></strong></p>
<p><strong>c) (a + b)</strong><strong><sup>4</sup></strong><strong></strong></p>
<p><strong>d) (a + b + c)</strong><strong><sup>2</sup></strong></td>
</tr>
</tbody>
</table>
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		<title>Para repasar Álgebra</title>
		<link>http://antoniojesussl.wordpress.com/2009/12/07/para-repasar-algebra/</link>
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		<pubDate>Mon, 07 Dec 2009 08:52:34 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Álgebra]]></category>
		<category><![CDATA[Matemáticas 2º ESO]]></category>
		<category><![CDATA[Números y letras]]></category>
		<category><![CDATA[Test]]></category>

		<guid isPermaLink="false">http://antoniojesussl.wordpress.com/2009/12/07/para-repasar-algebra/</guid>
		<description><![CDATA[TEST DE ÁLGEBRA NOMBRE&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.EDAD&#8230;&#8230;.. Instrucciones: Lee cuidadosamente las siguientes preguntas y contesta a lo que se te pide 1) Qué significa 5n (Señala todas las respuestas que creas que son correctas) a) 5 + n b) 5 y n c) 5 x n d) 5 + 5 + 5 + 5 + 5 e) n [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=77&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>TEST DE ÁLGEBRA</p>
<p>NOMBRE&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.EDAD&#8230;&#8230;..</p>
<p>Instrucciones:<br />
Lee cuidadosamente las siguientes preguntas y contesta a lo que se te pide</p>
<p>1) Qué significa 5n<br />
(Señala todas las respuestas que creas que son correctas)</p>
<p>a) 5 + n<br />
b) 5 y n<br />
c) 5 x n<br />
d) 5 + 5 + 5 + 5 + 5<br />
e) n + n + n + n + n<br />
f) Otra respuesta (escríbela por favor)&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>2) Qué significa e3<br />
(Señala todas las respuestas que creas que son correctas)<br />
a) e x 3<br />
b) e + 3<br />
c) 3 x e<br />
d) 3 + 3 + 3<br />
e) e + e + e<br />
f) e y 3<br />
g) Otra respuesta (escríbela por favor)&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>3) Qué significa nm<br />
(Señala todas las respuestas que creas que son correctas)<br />
a) n y m<br />
b) n x m<br />
c) n + m<br />
d) 25 + 26<br />
e) 25 x 26<br />
f) Otra respuesta (escríbela por favor)&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>4) Cómo escribirías 3 sumado a 5y</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>5) Cómo escribirías m + 5 multiplicado por 3</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>6) Cómo escribirías el área de este rectángulo<br />
Área =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>7) Si a = 3, ¿ a qué es igual 4a?&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p> <img src='http://s0.wp.com/wp-includes/images/smilies/icon_cool.gif' alt='8)' class='wp-smiley' /> Si b = 5, ¿ a qué es igual 7b?&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p>9) Cuál de las siguientes expresiones escribirías para representar el área de este rectángulo:</p>
<p>(Señala todas las respuestas que creas que son correctas)<br />
a) 5 x e + 2<br />
b) 5 x (e + 2)<br />
c) 10e<br />
d) 5 x e2<br />
e) e + 2 x 5<br />
f) Ninguna es correcta</p>
<p>10) Cuál de las siguientes expresiones escribirías para representar 2 sumado a 5a<br />
(Señala todas las respuestas que creas que son correctas)<br />
a) 5a más 2<br />
b) 5a + 2<br />
c) 7a<br />
d) 2 + 5a<br />
e) 7<br />
f) 10a<br />
g) (2 + 5) a<br />
h) Ninguna es correcta</p>
<p>11) Cuál de las siguientes expresiones escribirías para representar e + 2 multiplicado por 3<br />
(Señala todas las respuestas que creas que son correctas)<br />
a) e + 6<br />
b) 3 x (e + 2)<br />
c) 3 x e2<br />
d) 3 (e + 2)<br />
e) 3e + 6<br />
f) e + 2 x 3<br />
g) Ninguna es correcta</p>
<p>12) Simplifica todo lo que puedas. Si crees que no se puede simplificar escribe NO.</p>
<p>a) 2a + 5b + 3a &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p>b) 4 + 3y &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>c) 3a + 7b &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>d) a + a + 3b + 3a &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>e) 5y – 21 &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>13) 4 sumado a n se escribe como n + 4 ¿cómo se escribiría 4 sumado a 3n?</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>14) n multiplicado por 4 se escribe como 4n ¿cómo se escribiría</p>
<p>n + 5 multiplicado por 4?&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p>3n multiplicado por 4?&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>15) Si e + f = 8, ¿qué valor tiene e + f + g?</p>
<p>e + f + g =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p>16) Cuál es el área de las siguientes figuras:</p>
<p>Área =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230; Área =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>17) Escribe el perímetro de cada una de las figuras siguientes:</p>
<p>Perímetro =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230; Perímetro =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;<br />
Parte de esta figura no se dibuja. Hay n lados todos de longitud 2<br />
Perímetro =&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>18) Qué puedes decir acerca de u si u = v + 3 y v = 1 u =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;</p>
<p>19) Qué valor tiene m = 3n + 1 si n = 4 m =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>20) Si Juan tiene “ j “ canicas y Pedro tiene “ p “ canicas. ¿Cuántas canicas tienen entre los dos?</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>21) A + 3a lo podemos escribir en forma más simple como 4a. Escribe en la forma más simple posible:<br />
a) 2a + 3b =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>b) (a + b) + a =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>c) 2a + 5b + a =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>d) (a – b) + b =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>e) 3a &#8211; b + a =&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>22) Qué puedes decir de “ r “ si r = s + t y r + s + t = 30</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>23) En una figura el número de diagonales se puede obtener restando 3 al número de lados. Así pues una figura con 5 lados tiene 2 diagonales.</p>
<p>Una figura con K lados. ¿Cuántas diagonales tiene?&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;..</p>
<p>24) Qué puedes decir de “ c ” si c + d = 10 y c es menor que d</p>
<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
<p>25) La siguiente expresión, ¿ es verdadera siempre, nunca o algunas veces?</p>
<p>L + M + N = L + P + N &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.</p>
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		<title>REPASO EJERCICIOS DE NÚMEROS ENTEROS</title>
		<link>http://antoniojesussl.wordpress.com/2009/11/04/repaso-ejercicios-de-numeros-enteros/</link>
		<comments>http://antoniojesussl.wordpress.com/2009/11/04/repaso-ejercicios-de-numeros-enteros/#comments</comments>
		<pubDate>Wed, 04 Nov 2009 11:04:32 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[Ejercicio nº1 Calcula: a) -9 + [ 10 : (-3 - 2) -1 ] + 4 · (-3) = b) [ -4 · (8 - 5 - 4) + (-9 - 3) : 4] · (-2) = Ejercicio nº2 Resuelve las siguientes operaciones: a) (-10) : [ -4 · (-2) + 2 · (-3) ] [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=76&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Ejercicio nº1<br />
Calcula:<br />
a) -9 + [ 10 : (-3 - 2) -1 ] + 4 · (-3) =</p>
<p>b) [ -4 · (8 - 5 - 4) + (-9 - 3) : 4] · (-2) =</p>
<p>Ejercicio nº2<br />
Resuelve las siguientes operaciones:<br />
a) (-10) : [ -4 · (-2) + 2 · (-3) ] &#8211; 5 &#8211; (-3) · (-1) =</p>
<p>b) 3 &#8211; [ 2 - (-1) · (14 - 20 : 4 - 10) - 4 · (-3) ] &#8211; 6 · (-2) =</p>
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		<title>OPERACIONES CON NÚMEROS ENTEROS 2º ESO</title>
		<link>http://antoniojesussl.wordpress.com/2009/10/27/operaciones-con-numeros-enteros/</link>
		<comments>http://antoniojesussl.wordpress.com/2009/10/27/operaciones-con-numeros-enteros/#comments</comments>
		<pubDate>Tue, 27 Oct 2009 18:04:41 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
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		<description><![CDATA[1 Resuelve las siguientes operaciones: a) -6 + (-5 &#8211; 1 + 3) · (-2) + [ -9 : (-3) ] = b) -30 : (10 &#8211; 6 : 2 &#8211; 1) &#8211; [ -4 - 2 · (-5) ] = 2 Contesta a las siguientes preguntas: a) El dividendo y el divisor en una división son, respectivamente, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=68&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<table border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="27" valign="top">1</td>
<td width="693" valign="top"><strong>Resuelve las siguientes operaciones:</strong><strong> </strong><strong>a) -6 + (-5 &#8211; 1 + 3) · (-2) + [ -9 : (-3) ] =</strong><strong> </strong><strong>b) -30 : (10 &#8211; 6 : 2 &#8211; 1) &#8211; [ -4 - 2 · (-5) ] =</strong></td>
</tr>
<tr>
<td width="27" valign="top">2</td>
<td width="693" valign="top"><strong>Contesta a las siguientes preguntas:</strong><strong> </strong><strong>a) El dividendo y el divisor en una división son, respectivamente, 125 y 5. ¿El cociente puede ser un número negativo? Razona tu respuesta.</strong><strong> </strong><strong>b) Al dividir a entre b hemos obtenido de cociente el número &#8211; a. ¿Qué puedes decir de b?</strong><strong> </strong></td>
</tr>
<tr>
<td width="27" valign="top">3</td>
<td width="693" valign="top"><strong>Calcula:</strong><strong> </strong><strong>a) -9 + [ 10 : (-3 - 2) -1 ] + 4 · (-3) =</strong><strong> </strong><strong>b) [ -4 · (8 - 5 - 4) + (-9 - 3) : 4] · (-2) = </strong></td>
</tr>
<tr>
<td width="27" valign="top">4</td>
<td width="693" valign="top"><strong>El triple de la suma de dos enteros es -36. Uno de ellos es el doble del otro. ¿Cuáles son los enteros?</strong></td>
</tr>
<tr>
<td width="27" valign="top">5</td>
<td width="693" valign="top"><strong>Efectúa:</strong><strong> </strong><strong>a) ( &#8211; 2 ) · 14 : ( &#8211; 2 ) + ( &#8211; 8 ) : ( &#8211; 2 ) · ( &#8211; 15 ) : 3 &#8211; ( + 6 ) · ( &#8211; 1 ) =</strong><strong> </strong><strong>b) &#8211; 6 : 3 · ( + 5 ) &#8211; 42 : ( &#8211; 7 ) · ( &#8211; 4 ) &#8211; ( &#8211; 9 ) : 3 =</strong><strong> </strong></td>
</tr>
<tr>
<td width="27" valign="top">6</td>
<td width="693" valign="top"><strong>Escribe:</strong><strong> </strong><strong>a) Un polinomio aritmético con cuatro números naturales cuya suma sea cero.</strong><strong> </strong><strong>b) Un polinomio aritmético con seis números naturales cuya suma sea tres.</strong><strong> </strong></p>
<p><strong>c) Una suma de dos números enteros que dé cero.</strong><strong> </strong></p>
<p><strong>d) El mayor número entero negativo y el menor entero positivo.</strong></td>
</tr>
<tr>
<td width="27" valign="top">7</td>
<td width="693" valign="top"><strong>Halla el valor de P dado por la expresión P = [ x · y - z · ( x - 2 · y ) ] : 2x siendo x = &#8211; 4, y = 6, z = &#8211; 12.</strong><strong> </strong></td>
</tr>
<tr>
<td width="27" valign="top">8</td>
<td width="693" valign="top"><strong>El doble de la suma de dos números enteros es -4. Uno de ellos es 5. ¿De qué números se trata?  </strong></td>
</tr>
<tr>
<td width="27" valign="top">9</td>
<td width="693" valign="top"><strong>Calcula:</strong><strong> </strong><strong>a) (-2) · 4 + 5 &#8211; 3 · (-1) =</strong><strong> </strong><strong>b) (8 &#8211; 3) : (-1) &#8211; 1 =</strong><strong> </strong></p>
<p><strong>c) (-6) : (3 &#8211; 5) + 5 =</strong><strong> </strong></p>
<p><strong>d) &#8211; (4 &#8211; 3) · (-2) · 2 =</strong></td>
</tr>
<tr>
<td width="27" valign="top">10</td>
<td width="693" valign="top"><strong>Sergio trabaja 15 horas todas las semanas y gana 12 euros cada hora.</strong><strong> </strong><strong>a) ¿Cuánto gana al cabo de 4 semanas?</strong><strong> </strong><strong>b) ¿Cuánto pierde en esas 4 semanas si cada semana trabaja 2 horas menos? </strong></td>
</tr>
</tbody>
</table>
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		<title>LAS MATEMÁTICAS PARECEN MÁGICAS</title>
		<link>http://antoniojesussl.wordpress.com/2009/04/26/65/</link>
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		<pubDate>Sun, 26 Apr 2009 08:55:16 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
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		<description><![CDATA[Realmente mágico<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=65&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><a href="http://antoniojesussl.files.wordpress.com/2009/04/realmente-magico.ppt">Realmente mágico</a></p>
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		<title>EJERCICIO SOBRE EL TEOREMA DE PITÁGORAS</title>
		<link>http://antoniojesussl.wordpress.com/2009/04/26/ejercicio-sobre-el-teorema-de-pitagoras/</link>
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		<pubDate>Sun, 26 Apr 2009 08:15:20 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
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		<description><![CDATA[Calcula la apotema de un hexágono regular inscrito en una circunferencia de radio 8 cm<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=48&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><span style="font-size:11pt;font-family:Arial;">Calcula la apotema de un hexágono regular inscrito en una circunferencia de radio 8 cm</span></p>
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		<title>Deseo para Semana Santa</title>
		<link>http://antoniojesussl.wordpress.com/2009/04/03/deseo-para-semana-santa/</link>
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		<pubDate>Fri, 03 Apr 2009 22:23:43 +0000</pubDate>
		<dc:creator>ANTONIO JESÚS SÁNCHEZ</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Matemáticas 2º ESO]]></category>

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		<description><![CDATA[Hola alumnos de 2º de ESO: Espero que descanséis y que también estudiéis, para pasar los meses de curso que quedan lo más al día posible. Os deseo una Semana Santa llena de sentido y de gozo. Más adelante seguiré colgando en el Blog ejercicios y problemas que os ayuden a repasar. Si tenéis alguna [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=antoniojesussl.wordpress.com&amp;blog=7141877&amp;post=41&amp;subd=antoniojesussl&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong>Hola alumnos de 2º de ESO:</strong></p>
<p><strong>Espero que descanséis y que también estudiéis, para pasar los meses de curso que quedan lo más al día posible.</strong></p>
<p><strong>Os deseo una Semana Santa llena de sentido y de gozo.</strong></p>
<p><strong>Más adelante seguiré colgando en el Blog ejercicios y problemas que os ayuden a repasar. Si tenéis alguna sugerencia o comentario no dudéis en hacérmelo</strong></p>
<p><strong>Un saludo a todos mis alumnos.</strong></p>
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