Question

1. Resolva as expressões numéricas:
a) 8+ [4+ (5 - 1)-2)=

b) 2 + [8 - (5 + 1 + 3)=

c) 5+ (10 + [13 - (8 + 2)]}=

d) 10 + 5.3 + 15 + 6 =

e) 34 - [(15 - 3. 2) + 11]=

e) [(5 + 3) x 12]÷[(5-3)×4 ]=​

Answer 1

a) 8 + [ 4 + (5 - 1) - 2 ] = 12

8 + [ 4 + 4 - 2 ] =

8 + 4 =

12

b) 2 + [ 8 - (5 + 1 + 3) ] = 3

2 + [ 8 - 9 ] =

2 + 1 =

3

c) 5 + ( 10 + [ 13 - ( 8 + 2 ) ]) = 12

5 + 10 [ 13 - 10 ] =

5 + 10 - 3 =

15 - 3 =

12

d) 10 + 5,3 + 15 + 6 = 36,3

15,3 + 15 + 6 =

30,3 + 6 =

36,3

e) 34 - [( 15 - 3,2 ) + 11] = 11,2

34 - [ 11,8 + 11 ] =

34 - 22,8 =

11,2

f) [( 5 + 3 ) × 12] ÷ [( 5 - 3 ) × 4] = 12

[ 8 × 12 ] ÷ [ 2 × 4 ] =

96 ÷ 8 =

12

Espero ter ajudado ♡