Como se resolvem estas frações?

<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">1/2-1/4</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">7/8-3/8</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">6/4x7/8</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">6/5-4/9</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">4/3:6/7</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">7/8:9/5</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">6/13:14/15</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">&nbsp;</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">45/5:8/2</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">2/3 de 99</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">1/5 de 125</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">3/6 de 72</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">11/7 de 490</span></span></p>
<p><span color="#222222" face="Verdana, Arial, sans-serif" size="2" style="color: #222222; font-family: Verdana, Arial, sans-serif; font-size: small;"><span style="line-height: normal;">8/9 de 90 ; 7/5 de 55 ; 5/4 de 444</span></span></p>
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Categoria: Matemática 7 years ago
goretti
Perguntado 7 years ago
goretti

Curta no Facebook, +1 no Google, poste no Twiter ou compartilhe esta questão em outra rede social.

Olá Goreti 


Antes de te dar respostas aconselho-te este curso gratuito sobre frações, porque primeiro tens de entender o que são frações.


A ligação para o curso está nas referências. 


Vê todos os vídeos e resolve os exercícios.

David Azevedo
Respondido 7 years ago
David Azevedo

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