Question

1) Resolva as expressões a seguir:

10+12-6+7=
40-9×4+23=
120+2×14-63=
76+81÷3-39=
13×3-14×2=
123+120-65+39×3-83=
56+36×4+32-90=
138-15×6+31+60×2=
45×(8+2)+10=
(12+4)×3-9=
(1+21)÷2-(60-55)=
3×4+(4+5)×2=

Answer 1

10+12-6+7=
40-9×4+23=
40-36+23= 4+23 =27
120+2×14-63=
120+28-63= 148-63 =85
76+81÷3-39=
76+27-39= 103-39=64
13×3-14×2=
39-28 = 9 
123+120-65+39×3-83=
123+120-65+177-83= 272
56+36×4+32-90=
56+144+32-90 = 142
138-15×6+31+60×2=
138-90+31+120 = 199
45×(8+2)+10=
450 + 10 = 460
(12+4)×3-9=
16x3-9 = 39
(1+21)÷2-(60-55)=
22/2 - 5 = 11-5 = 6
3×4+(4+5)×2=
12+9x2 = 12+18 = 30 

Answer 2

O resultado das expressões é:

a) 25

b) 27

c) 85

d) 64

e) 9

f) 212

g) 142

h) 199

i) 460

j) 39

k) 6

l) 30

Explicação:

a) 10 + 12 - 6 + 7 =

22 - 6 + 7 =

18 + 7 = 25

b) 40 - 9×4 + 23 =

40 - 36 + 23 =

4 + 23 = 27

c) 120 + 2×14 - 63 =

120 + 28 - 63 =

148 - 63 = 85

d) 76 + 81 ÷ 3 - 39 =

76 + 27 - 39 =

103 - 39 = 64

e) 13 × 3 - 14 × 2 =

39 - 28 = 9 

f) 123 + 120 - 65 + 39 × 3 - 83 =

123 + 120 - 65 + 117 - 83 =

243 - 65 + 117 - 83 =

178 + 117 - 83 =

295 - 83 = 212

g) 56 + 36 × 4 + 32 - 90 =

56 + 144 + 32 - 90 =

200 + 32 - 90 =

232 - 90 = 142

h) 138 - 15 × 6 + 31 + 60 × 2 =

138 - 90 + 31 + 120 =

48 + 31 + 120 =

79 + 120 = 199

i) 45 × (8 + 2) + 10 =

45 × 10 + 10 =

450 + 10 = 460

j) (12 + 4) × 3 - 9 =

16 × 3 - 9 =

48 - 9 = 39

k) (1 + 21) ÷ 2 - (60 - 55) =

22 ÷ 2 - (60 - 55) =

22 ÷ 2 - 5 =

11 - 5 = 6

m) 3 × 4 + (4 + 5) × 2 =

12 + (4 + 5) × 2 =

12 + 9 × 2 =

12 + 18 = 30 

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