Question

1° Dada a expressão numérica, resolva:

A) 81-30+17=
B) 66-21-19+25=
C) 50+440-10+3=
D) 117+115-112=​

Answer 1

❑ Resolução;

a)

=>81−30+17

=>51+17

=>=68

b)

=>66−21−19+25

=>45−19+25

=>26+25

=>=51

c)

=>50+440−10+3

=>490−10+3

=>480+3

=>=483

d)

=>117+115−112

=>232−112

=>=120