Add 64 and 37 mentally. What is the sum?

Question

37 is 3 less than 40, so you need to take 3 from 64.

Separate 64 into 3 + ____
37 + 3 + 61 can be added to become
____.

The correct sum of 64 and 37 is
101
​​​​​​​.
.

Answer 1

To add 64 and 37 mentally, you can break it down into simpler steps.

1. Recognize that 37 is 3 less than 40.

2. So, you can adjust 64 by separating it into 3 + 61. That means you can consider it as:

   • \( 64 - 3 + 37 + 3 = 61 + 40 \).

3. Now, you can add:

   • \( 61 + 40 = 101 \).

Thus, the correct sum of 64 and 37 is 101.