Question

The length of Pole 1 is 16 inches and Pole 2 is 21 inches. What is the total length of both the poles? Use a mental math strategy to find the answer quickly.

• A. (i) 20 (ii) 36 (iii) 35
• B. (i) 20 (ii) 35 (iii) 37
• C. (i) 20 (ii) 36 (iii) 37
• D. (i) 20 (ii) 35 (iii) 36

Answer 1

The correct option is C (i) 20 (ii) 36 (iii) 37

Length of Pole $1=16\text{inches}$
Length of Pole $2=21\text{inches}$
Total length of both poles $=12+21\text{inches}$
Using the mental math ability of compensation, we can solve the question.
Therefore, the combined length of both the poles is 37 inches.

Option A (i) 20 (ii) 36 (iii) 37 is the correct answer.