Calcule
b) 2/5 + 1/5 + 3/5 =
c) 3/7 - 4/7 + 2/7 =
d) 7/9 + 3/9 - 1/9 =
e) 5/8 + 3/4 =
f) 5/9 - 1/3 =
g) 2/5 + 2/3 =
h) 9/4 - 3/2 =
Soluções para a tarefa
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b)6
c)1
d)9
e)5/8+3/4=5/8+6/8=11
f)5/9-1/3=5/9-3/9=2
g)2/5+2/3=6/15+10/15=16
h)9/4-3/2=9/4-6/4=3
quando as bases forem iguais vc pode cortar e fazer a conta direto
se as bases forem diferentes vc terá que tira o mmc
c)1
d)9
e)5/8+3/4=5/8+6/8=11
f)5/9-1/3=5/9-3/9=2
g)2/5+2/3=6/15+10/15=16
h)9/4-3/2=9/4-6/4=3
quando as bases forem iguais vc pode cortar e fazer a conta direto
se as bases forem diferentes vc terá que tira o mmc
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Vlw!
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