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Mental Math Place Value

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Mental Math Place Value worksheet preview

Mental Math Place Value

📊 Part 1: Breaking Down Numbers

Break each number into thousands, hundreds, tens, and units.

1. Break down 3,456

_____ thousands + _____ hundreds + _____ tens + _____ units

2. Break down 7,283

_____ thousands + _____ hundreds + _____ tens + _____ units

3. Break down 5,091

_____ thousands + _____ hundreds + _____ tens + _____ units

4. Which number has 4 thousands, 2 hundreds, 7 tens, and 9 units?

4,279

4,729

2,479

9,724

🧠 Part 2: Mental Math Addition

Use place value partitioning to add these numbers mentally. Show your working.

5. 2,345 + 1,423

Thousands: _____ + _____ = _____

Hundreds: _____ + _____ = _____

Tens: _____ + _____ = _____

Units: _____ + _____ = _____

Total: _____

6. 4,156 + 2,732

Thousands: _____ + _____ = _____

Hundreds: _____ + _____ = _____

Tens: _____ + _____ = _____

Units: _____ + _____ = _____

Total: _____

7. 3,284 + 1,605

Thousands: _____ + _____ = _____

Hundreds: _____ + _____ = _____

Tens: _____ + _____ = _____

Units: _____ + _____ = _____

Total: _____

👥 Part 3: Partner Activity

Work with a partner to complete these challenges!

8. Partner Challenge: Create your own addition problem

Partner 1: Write a 4-digit number: _________

Partner 2: Write a 4-digit number: _________

Now work together to add them using place value partitioning:

9. Speed Round: Circle the correct answers

1,234 + 2,345 =

3,579
3,479
3,569

2,156 + 1,832 =

3,988
3,898
4,988

4,027 + 1,951 =

5,978
5,878
6,978

10. Reflection: Explain why place value partitioning helps with mental math

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