Question

Add 64 and 37 mentally. What is the sum?

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 ______
​​​​​​​.

Answer 1

Let's break it down step by step:

1. **Separate 64 into 3 + 61**:
You can express 64 as 3 + 61, so it becomes:
\[
64 = 3 + 61
\]

2. **Now find the sum**:
Substitute this into your addition:
\[
37 + 3 + 61
\]

3. **Calculate it**:
First, add 37 and 3:
\[
37 + 3 = 40
\]
Then add 40 and 61:
\[
40 + 61 = 101
\]

So, the correct sum of 64 and 37 is **101**.