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 ______
​​​​​​​.

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.