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Place Value Mental Addition

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Place Value Mental Addition worksheet preview

Place Value Mental Addition

Place value chart with numbers

🎯 WALT: We Are Learning To

• Use place value to rename numbers

• Choose appropriate mental addition strategies

• Explain our mathematical thinking using correct vocabulary

📊 Part 1: Place Value Renaming

1. The number 23,456 can be renamed as:

20,000 + 3,000 + 400 + 50 + 6

2,000 + 3,000 + 400 + 50 + 6

23,000 + 400 + 56

2. Which of these are correct ways to rename 15,732? (Tick all that apply)

10,000 + 5,000 + 700 + 30 + 2

15,000 + 732

1,000 + 5,000 + 700 + 30 + 2

Fifteen thousand, seven hundred and thirty-two

3. Rename this number in expanded form: 48,291

________ + ________ + ________ + ________ + ________

4. Write this number in standard form: 30,000 + 6,000 + 200 + 80 + 5

Standard form: _______________

🧠 Part 2: Mental Addition Strategies

5. Which mental strategy would work best for 47 + 28?

Doubles (because they're close to the same number)

Getting to 10 (47 + 3 + 25)

Rounding (50 + 30 - 5)

6. Solve 36 + 38 using the doubles strategy. Show your thinking:
7. Use partitioning to solve 245 + 127:

245 = _____ + _____ + _____

127 = _____ + _____ + _____

Answer: _____

8. Choose the best mental strategy for each problem and solve:

a) 25 + 26 Strategy: _____________ Answer: _____

b) 89 + 15 Strategy: _____________ Answer: _____

c) 156 + 234 Strategy: _____________ Answer: _____

✍️ Part 3: Explain Your Thinking

9. Explain why renaming numbers using place value helps us understand their size and value:
10. How is partitioning numbers in maths similar to breaking down big tasks in real life? Give an example:
Extension Challenge: Create your own 5-digit number and show three different ways to rename it:

My number: _______________

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