Question

1 – Efetue as Adições:
a) 35+12
b) −23+59
c) (−5) +17
d) (−0,2) + (−12)
e) −0,7 + 0,5
2 – Efetue as Subtrações:
a) −4 − (−12)
b) (+0,3) − (−15)
c) (+57) − (−23)
d) (−78) − (−34)
3 – Efetue as Multiplicações
a) (−12) . (+23) . (−37)
b) (−1). (+53) . (+35)
c) (+7). (−17) . (+7)
d) (−25) . (−32) . (−85)
4 – Efetue as Divisões:
a) (−45): (−35)
b) (−49): (−3)
c) 23∶316 1

d)
33 4

5 – Calcule:
a)3−13
1+15
b)2−12
2
3−4

Answer 1

Resposta:

1-

a)+47

b)+27

c)+12

d)-12,2

e)-0,2