Question

Which expression is equivalent to 81 + 18?

A. 9(9 + 2)
B. 9(9 + 9)
C. 9(9 + 3)
D. 3(27 + 18)

Answer 1

9(9+2)

Explanation:

81+18=99

Now

`\\ \rm\Rrightarrow 9(9+2)`

`\\ \rm\Rrightarrow 81+18`

`\\ \rm\Rrightarrow 99`

Hence verified.

Answer 2

• A. 9(9 + 2)

Explanation:

81 + 18 = 99

• A. 9(9 + 2) = 99, correct
• B. 9(9 + 9) = 198 ≠ 99
• C. 9(9 + 3) = 108 ≠ 99
• D. 3(27 + 18) = 135 ≠ 99