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 <question type="category"><category><text>4t ESO/4.01 NOMBRES/4.01.1 Els nombres racionals</text></category></question>
 
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      <text>4.01.1.10  TEORIA: Naturals, enter i racionals</text>
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<td style="color: #ff6600; vertical-align: top; border-style: none; text-align: center; background-image: none; background-color: #000066;" colspan="2" valign="top" width="50%"><span style="font-size: medium; color: #ffff99;" data-mce-mark="1">Nombres naturals</span></td>
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<div style="text-align: center; font-weight: bold;"><span style="color: #000080;" data-mce-mark="1">Serveixen per comptar quantitats positives.</span></div>
<div style="text-align: center; font-weight: bold;"><span style="color: #000080;" data-mce-mark="1">El conjunt dels naturals s'escriu  «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathvariant=¨bold¨ mathcolor=¨#00007F¨»§#8469;«/mi»«/math» </span></div>
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<div style="text-align: center;"><span style="font-size: medium; color: #ffff99;" data-mce-mark="1">Nombres enters</span></div>
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<div style="text-align: justify;"><span style="color: #000080;">Els fem servir per expressar quantitats enteres positives (&gt;0) o negatives (&lt;0).</span></div>
<span style="color: #000080;">El conjunt dels enters s'escriu «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathvariant=¨bold¨ mathcolor=¨#00007F¨»§#8484;«/mi»«/math» = {,-4,-3,-2,-1,0,1,2,3,...}</span></td>
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<div style="text-align: center;"><span style="color: #ffff99; font-size: medium;" data-mce-mark="1">Nombres racionals</span></div>
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<div><span style="color: #000080;" data-mce-mark="1">Són els nombres enters i les fraccions de nombres enters.</span></div>
<div><span style="color: #000080;" data-mce-mark="1">El conjunt dels racionals s'escriu </span>«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathvariant=¨bold¨ mathcolor=¨#00007F¨»§#8474;«/mi»«/math»</div>
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