Question

efetue as potencias
matematica 7ano

Answer 1

Explicação:

) (5) + (30)= 35

c) (– 16) + (7) = -11

e) (15) + (– 15)= 0

b) (4) + (– 12)= -8

d) (– 8) + (– 10)= +18

f) (30) + 0= 30

2. Efetue as subtrações.

a) (15) – (8)= 5

c) (14) – (21)= -7

e) (– 108) – (5)= -113

b) (10) – (– 8)= +18

d) (– 17) – (– 25)= +8

f) (– 62) – (– 78)= +16

3. Efetue as multiplicações.

a) (46) · (2)= +92

c) (– 7) · (– 8)= -56

e) (10) · (– 46)= -460

b) (6) · (– 2)= -12

d) (– 9) · (2)=  -18

f) (– 72) · (1)= -72

4. Efetue as divisões.

a) (9) ÷ (– 9)= -1

c) (– 30) ÷ (– 6)= +5

e) (– 4) ÷ (1)= -4

b) (8) ÷ (4)= +2

d) (– 48) ÷ (16)= -3

f) (– 24) ÷ (– 6)= +4