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 +%C2%A0 . 37 + 3 + 61 can be added to become%C2%A0 . The correct sum of 64 and 37 is

Answer 1

To add 64 and 37 mentally, you can use the method you described.

First, note that 37 is 3 less than 40. So, you can subtract 3 from 64 to simplify the addition:

1. Start with 64.
2. Subtract 3 from it to make it easier to add:
   \( 64 - 3 = 61 \)

Now, you can add 61 to 40 (since you added the 3 back to 37 to make it 40):

• \( 61 + 40 = 101 \)

So, the sum of 64 and 37 is \( 101 \).