Question

Calcule de acordo com o cancelamento :



A)–10 – 6 + 3

B ) +8 – 7 + 9 – 5

C ) –4 – 3 – 2 +1 + 2 + 3

D ) +8 – 17 + 5 – 14 – 20

Answer 1

A) -13

B) +5

C) -3

D) -38

Answer 2

a)-10-6+3
-16+3
-13

b)8-7+9-5
1 +9-5
10-5
5

c)-4-3-2+1+2+3
-7-2+1+2+3
-9+1+2+3
-8+2+3
-6+3
-3

d)8-17+5-14-20
-9+5-14-20
-4-14-20
-18-20
-38