Math worksheet for practicing addition using the expanded form method.

Let’s solve each problem using the expanded form strategy.

Expanded form means breaking numbers into hundreds, tens, and ones — then adding them separately before combining.

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Problem 1: 472 + 291

Break 472 into:
→ 400 + 70 + 2

Break 291 into:
→ 200 + 90 + 1

Now add by place value:

Hundreds: 400 + 200 = 600
Tens: 70 + 90 = 160
Ones: 2 + 1 = 3

Now combine: 600 + 160 + 3 = 763

✔ Final Answer for #1: 763

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Problem 2: 506 + 175

Break 506 into:
→ 500 + 0 + 6 (or just 500 + 6)

Break 175 into:
→ 100 + 70 + 5

Add by place value:

Hundreds: 500 + 100 = 600
Tens: 0 + 70 = 70
Ones: 6 + 5 = 11

Now combine: 600 + 70 + 11 = 681

✔ Final Answer for #2: 681

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Problem 3: 638 + 216

Break 638 into:
→ 600 + 30 + 8

Break 216 into:
→ 200 + 10 + 6

Add by place value:

Hundreds: 600 + 200 = 800
Tens: 30 + 10 = 40
Ones: 8 + 6 = 14

Now combine: 800 + 40 + 14 = 854

✔ Final Answer for #3: 854

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Final Answers:

1) 763
2) 681
3) 854