Question

1 °calcule as propriedades das expressões númerica abaixo

a) ( - 7 ) × ( - 8) × ( + 3) =
b) ( + 4) × ( - 7 ) × ( + 9) × ( -11) =
c) ( + 8 ) × ( - 6) × ( - 3 ) × ( - 2 ) × ( - 1) =
d) ( - 5 ) × ( - 6) × ( - 3 ) × ( -2 ) × ( - 1)
2° Calcule:

a ) - 30 - 5 × [ ( - 1 ) × ( 15- 3× 6) + 9 - 3×4]
b) - 5 + [ ( -20) × ( - 15 + 30) × ( -1 ) ]
c) 18 + 4 [ - 6 - 4 × ( - 5 + 6) ]

3° RESOLVA AS PROPRIEDADES

a) ( -3) × ( - 20 +7)=
b) ( + 15 - 18) × ( -5)=
c) 2× ( 7+5)=
d) ( - 3 ) × ( - 20 + 7)
e) ( 25 - 18) × (-5) =

4° ) Calcule:

a) 2× [( + 19 ) ] + ( - 4 ) ] =
b) ( - 7 ) × ( + 1 ) l=
c) - 5 × ( 4 + 2) =​

Answer 1

Resposta:

1

A) 168

B)2272

c)228

D)-180

2

a)-30

b)295

c)-32

3

a)39

b)15

c)24

d)39

e)-35

4

a)34

b)-7

c) -30

Explicação passo-a-passo:

Assinado: atila