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*arme as resolva as operações a seguir
a) 1289+390 =
b) 675+438+93 =
c) 432 - 390 =
d) 7590 - 2639 =
e) 85430 × 3 =
f) 24961 × 46 =
g) 6280÷ 4 =
h) 7840 ÷ 14 =