Question

Efetue expressões numéricas

40:(-2)+9=

(-12):3+6=

(-54):(-9)+2=

20×(-10)×(-5)=

(-1)×(-8)+20=

4+6×(-2)=

3×(-7)+40=

(-4)×(-5)+8×(+2)=

Answer 1

Oi...

a) 40 ÷ ( - 2) + 9 =

- 20 + 9 =

- 11

b)

( - 12) ÷ 3 + 6 =

- 4 + 6 =

+ 2

c)

(- 54) ÷ ( - 9) + 2=

+ 6 + 2=

+ 8

d)

20 × ( - 10) × ( - 5) =

- 200 × - 5 =

+ 1000

e)

( - 1) × ( - 8) + 20 =

+ 8 + 20 =

+ 28

f)

4 +  6 × ( - 2) =

4 - 12

- 8

g)

3 × ( - 7) + 40 =

- 21 + 40 =

+ 19

h)

( - 4) × ( - 5) + 8 × ( +2) =

+ 20 + 16 =

+ 36

Espero ter ajudado