Question

A) [(-4)+(-7). (+8)]:12
B) 4. (-8)+8. (+8)+1. (-6)+7.(+6)
C) +40.8:5
D) [12:(+3+1)+5 (+9)]
E) (+7)+( -3).(-8)
F) -67-(+16-9+24)
G) 27-5×4+16:2
H) (20:+5+3). (+2)

Answer 1

a) [(-4)+(-7). (+8)] : 12 =

[ -4 + ( - 56 ) ] : 12 =

- 60 : 12 =

-5

b) 4. (-8)+8. (8) +1 . (-6) +7 . (6) =

- 32 + 64 + ( - 6 ) + 42 =

32 - 6 + 42 =

26 + 42 =

68

C) 40 . 8 : 5 =

320 : 5 =

64

D) [ 12 : ( 3+1 ) + 5 (9)] =

[ 12 : 4 + 5 . (9)] =

3 + 45 =

48

E) (7) + ( -3) . (-8) =

7 + 24 =

31

F) -67-(+16-9+24) =

- 67 - 31 =

- 98

G) 27 - 5×4 + 16:2 =

27 - 20 + 8 =

15

H) (20:5 + 3) . 2 =

(4 + 3) . 2 =

7 . 2 =

14