October 2018 1 35 Report
Coloca paréntesis solamente donde se necesario para que las igualdades resulten verdaderas.

a)40 + 8 : 4 - 2 = 10

b)36 + 4 : 4 - 5 =32

c)10 + 2 × 50 - 20 =360

d)21 : 7 - 4 + 8 =15
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