Question

A)100 + (156-7×8 ):5= b)200 - (28+9×8)÷4=c)1000 - (162 - 6×7) ÷8=d)650 + (133 - 7×9 ) ÷ 7=​

Answer 1

a) 100 + (156-7×8) : 5= 100 + (156-56) : 5 = 100 + 100 : 5 = 100 + 20 = 120.

b) 200 - (28+9×8) ÷ 4 = 200 - (28+72) : 4 = 200 - 100 : 4 = 200 - 25 = 175.

c) 1000 - (162-6×7) ÷ 8 = 1000 - (162-42) : 8 = 1000 - 120 : 8 = 1000 - 15 = 985.

d) 650 + (133-7×9 ) ÷ 7 = 650 + (133-63) : 7 = 650 + 70 : 7 = 650 + 10 = 660.

Answer 2

Let's solve each of the equations step by step:

a) 100 + (156 - 7 × 8) ÷ 5

First, we perform the multiplication inside the parentheses: 100 + (156 - 56) ÷ 5

Next, we subtract: 100 + 100 ÷ 5

Then, we divide: 100 + 20

Finally, we add: 120

Therefore, the value of a is 120.

b) 200 - (28 + 9 × 8) ÷ 4

First, we perform the multiplication inside the parentheses: 200 - (28 + 72) ÷ 4

Next, we add: 200 - 100 ÷ 4

Then, we divide: 200 - 25

Finally, we subtract: 175

Therefore, the value of b is 175.

c) 1000 - (162 - 6 × 7) ÷ 8

First, we perform the multiplication inside the parentheses: 1000 - (162 - 42) ÷ 8

Next, we subtract: 1000 - 120 ÷ 8

Then, we divide: 1000 - 15

Finally, we subtract: 985

Therefore, the value of c is 985.

d) 650 + (133 - 7 × 9) ÷ 7

First, we perform the multiplication inside the parentheses: 650 + (133 - 63) ÷ 7

Next, we subtract: 650 + 70 ÷ 7

Then, we divide: 650 + 10

Finally, we add: 660

Therefore, the value of d is 660.

To summarize: a) 100 + (156 - 7 × 8) ÷ 5 = 120 b) 200 - (28 + 9 × 8) ÷ 4 = 175 c) 1000 - (162 - 6 × 7) ÷ 8 = 985 d) 650 + (133 - 7 × 9) ÷ 7 = 660