Question

Find each sum or difference by combining the parts that are alike.

Answer 1

417 + 231 = 648

In hundreds, tens, and ones:

417 = 400 + 10 + 7

4 Hundreds

1 Tens

7 Ones

231 = 200 + 30 + 1

2 Hundreds

3 Tens

1 Ones

The answer is 648

648 = 600 + 40 + 8

6 Hundreds

4 Tens

8 Ones