Which two signs should be interchanged to make the given equation correct?
117 ÷ 13 + 16 × 540 - 40 = 644
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. + and ×.
Given equation: 117 ÷ 13 + 16 × 540 - 40 = 644
Option 1: + and ×
After interchanging the expression becomes:
117 ÷ 13 + 16 × 540 - 40 = 644
117 ÷ 13 × 16 + 540 - 40= 644
9 × 16 + 540 - 40 = 644
144 + 540 - 40 = 644
684 - 40 = 644
644 = 644