15. Calcule:
a) 1,46 + 2,20
b) 3 - 1,45
c) 2,4 x 1,6
d) 2/3 + 1/2
e) 3/5 x 2/3
f) 1/4 : 2/3
a) 1,46 + 2,20
b) 3 - 1,45
c) 2,4 x 1,6
d) 2/3 + 1/2
e) 3/5 x 2/3
f) 1/4 : 2/3
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Resposta:
a) 3,66
b) 1,55
c) 3,84
d) 7/6
e) 3/8
Explicação passo a passo: