Question

Calcule as expressões: a) (3+4)x(9-8) =

b) (20+8):(3+4) =

c) 15+8x(2+3) =

d) (5+3x2)-1=

e) 25+(8:2+1)-1=

f) 15+[5x(8-6:2)] =

g) 50-[13-(10-2):2] =

h) [40+2x(7-5)]x2-20 =​

Answer 1

Resposta:

a)7

b)4

c)63

d)10

e)28

f)40

g)41

h)68

Answer 2

Resposta:

A) (3+4)×(9-8)=

7×1=

7

B) (20+8)÷(3+4)=

28÷7=

4

C) 15+8×(2+3)=

15+8×5=

15+40=

55

D) (5+3×2)-1=

(5+6)-1=

11-1=

10

E) 25+(8÷2+1)-1=

25+(4+1)-1=

25+5-1=

30-1=

29

F) 50-[13-(10-2)÷2]=

50-[13-8÷2]=

50-[13-4]=

50-9=

41