Question

What is the sum of the lengths of the two blocks in the given image?

• A. 68 in
• B. 67 in
• C. 65 in
• D. 61 in

Answer 1

The correct option is A 68 in

Given, the length of the red block = 37 in
Length of the green block = 31 in

So, the sum of the lengths of the two blocks = (37 + 31) in

Let’s add 37 and 31.

Step 1: Let’s reduce the addend 31 to 30 and then add 30 to 37.
31 − 1 = 30
37 + 30 = 67

Step 2: Let’s now add 1 to 67 to get the final answer.
67 + 1 = 68

So, (37 + 31) in = 68 in
So, the sum of the lengths of the two blocks is 68 in.