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Large Number Addition Practice

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Large Number Addition Practice

Large Number Addition Practice

Calculator and numbers illustration

🎯 Part 1: Estimation Practice

Instructions: Round each number to the nearest thousand, then estimate the sum before calculating.

1. 12,487 + 9,356

Round 12,487 to nearest thousand: _________ Round 9,356 to nearest thousand: _________

Estimated sum: _________

Actual answer: _________

2. 45,672 + 38,149

Round 45,672 to nearest thousand: _________ Round 38,149 to nearest thousand: _________

Estimated sum: _________

Actual answer: _________

3. 76,235 + 14,987

Round 76,235 to nearest thousand: _________ Round 14,987 to nearest thousand: _________

Estimated sum: _________

Actual answer: _________

🧮 Part 2: Column Addition Practice

Instructions: Use column addition to solve these problems. Remember to line up place values correctly!

4. 23,904 + 17,682
5. 34,765 + 28,934
6. 59,318 + 24,765
7. 72,184 + 19,457
8. 67,823 + 21,479

📝 Part 3: Word Problems

Instructions: Read each problem carefully, write an equation, then solve.

9. A school fundraiser collected $18,492 in the first week and $26,317 in the second week. How much money did they collect altogether?

Equation: _________________________

Answer: $__________

10. The population of Auckland is approximately 49,375 people in one suburb and 50,624 people in another suburb. What is the combined population of both suburbs?

Equation: _________________________

Answer: __________ people

11. A factory produced 31,468 items in January and 68,531 items in February. How many items were produced in total over the two months?

Equation: _________________________

Answer: __________ items

⚡ Part 4: Quick Practice

Instructions: Solve these addition problems. Use estimation to check if your answers are reasonable.

12. 88,479 + 11,326 = __________
13. 53,627 + 46,372 = __________
14. 29,384 + 58,617 = __________
15. 85,729 + 14,270 = __________
16. 98,461 + 27,538 = __________
17. 64,213 + 35,789 = __________
18. 81,495 + 12,504 = __________
19. 74,126 + 23,874 = __________
20. 92,583 + 7,416 = __________

🤔 Part 5: Reflection

21. Which strategy do you find most helpful when adding large numbers? Circle your answer:

Column addition

Mental maths with place value

Estimation first, then calculate

Breaking numbers into parts

22. Explain how estimation helps you check if your answer is reasonable:
23. What is one thing you feel confident about with large number addition?
24. What is one thing you would like to improve?
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