Partial Sums Addition Worksheet with Examples and Practice Problems

I'll solve the addition problems using the partial sums method as shown in the example.

Looking at the example:
351 + 627 = 978
The partial sums are broken down by place value:
- Hundreds: 300 + 600 = 900
- Tens: 50 + 20 = 70
- Ones: 1 + 7 = 8
- Total: 900 + 70 + 8 = 978

Now I'll solve each problem using the same method:

Problem 1: 45 + 32
- Tens: 40 + 30 = 70
- Ones: 5 + 2 = 7
- Total: 70 + 7 = 77

Problem 2: 57 + 61
- Tens: 50 + 60 = 110
- Ones: 7 + 1 = 8
- Total: 110 + 8 = 118

Problem 3: 346 + 251
- Hundreds: 300 + 200 = 500
- Tens: 40 + 50 = 90
- Ones: 6 + 1 = 7
- Total: 500 + 90 + 7 = 597

Problem 4: 451 + 58
- Hundreds: 400 + 0 = 400
- Tens: 50 + 50 = 100
- Ones: 1 + 8 = 9
- Total: 400 + 100 + 9 = 509

Problem 5: 239 + 980
- Hundreds: 200 + 900 = 1100
- Tens: 30 + 80 = 110
- Ones: 9 + 0 = 9
- Total: 1100 + 110 + 9 = 1219

The completed worksheet would show these partial sums and final answers for each problem.