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Part-Part-Whole Addition

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Part-Part-Whole Addition worksheet preview

Part-Part-Whole Addition

Part-part-whole diagram with two parts combining to make a whole

🧮 Part 1: Understanding Parts and Wholes

1. Look at this part-part-whole problem: 234 + 156 = _____

Break 234 into parts: 200 + 30 + 4

Break 156 into parts: 100 + 50 + 6

Add the hundreds: 200 + 100 = _____

Add the tens: 30 + 50 = _____

Add the ones: 4 + 6 = _____

Total: _____ + _____ + _____ = _____

2. Which number sentence matches the part-part-whole diagram showing 145 + 237?

100 + 200 + 40 + 30 + 5 + 7 = 382

145 + 237 = 372

100 + 40 + 5 + 200 + 30 + 7 = 382

3. Complete this part-part-whole addition:

326 + 148 = ?

Parts of 326: _____ + _____ + _____

Parts of 148: _____ + _____ + _____

Answer: _____

4. Circle the correct way to break apart these numbers for easier adding:

For 567 + 234:

(500 + 60 + 7) + (200 + 30 + 4)

(567) + (234)

(560 + 7) + (230 + 4)

✏️ Part 2: Problem Solving

5. Sarah has 285 stickers. Her friend gives her 167 more stickers. How many stickers does Sarah have altogether?

Show your part-part-whole working:

Answer: _____ stickers

6. At the school fair, Class A raised $456 and Class B raised $278. What is the total amount raised?

Break the numbers into parts to solve:

$456 = $_____ + $_____ + $_____

$278 = $_____ + $_____ + $_____

Total = $_____

7. Draw a part-part-whole diagram for 349 + 185 and solve:

Answer: _____

8. Check if this part-part-whole addition is correct. Circle your answer:

672 + 219 = (600 + 70 + 2) + (200 + 10 + 9) = 800 + 80 + 11 = 891

Correct

Incorrect

If incorrect, show the right answer: _____

🎯 Part 3: Challenge Questions

9. Find the missing part: 427 + _____ = 695

Use part-part-whole thinking to work backwards:

10. Three classes collected bottles for recycling. Year 2A collected 156 bottles, Year 2B collected 234 bottles, and Year 2C collected 187 bottles. How many bottles did they collect in total?

Show your part-part-whole strategy:

Total bottles: _____

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