Large Number Addition Practice

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🎯 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. Show your working clearly.

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. Auckland's population is approximately 1,695,000 people. Wellington's population is approximately 215,000 people. What is the combined population of these two cities?

Equation: _________________________

Answer: _________________ people

10. A school fundraiser collected $18,492 in the first week and $26,317 in the second week. How much money did they raise in total?

Equation: _________________________

Answer: $__________________

11. A factory produced 49,375 items in January and 50,624 items in February. What was the total production for these two months?

Equation: _________________________

Answer: _________________ items

⚡ Part 4: Quick Practice

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

12. 31,468 + 68,531 = _________

13. 88,479 + 11,326 = _________

14. 53,627 + 46,372 = _________

15. 29,384 + 58,617 = _________

16. 85,729 + 14,270 = _________

🏆 Part 5: Challenge Problems

Instructions: These problems require extra care with place value. Show all working.

17. 98,461 + 27,538

18. 64,213 + 35,789

19. 81,495 + 12,504

20. 74,126 + 23,874

21. 92,583 + 7,416

🤔 Part 6: Reflection

22. Which strategy do you find most helpful when adding large numbers?

Column addition

Mental maths with place value

Estimation first, then calculate

Breaking numbers into parts

23. What is one thing you feel confident about with large number addition?

24. What is one area you'd like to improve?

Large Number Addition Practice

Large Number Addition Practice

🎯 Part 1: Estimation Practice

🧮 Part 2: Column Addition Practice

📝 Part 3: Word Problems

⚡ Part 4: Quick Practice

🏆 Part 5: Challenge Problems

🤔 Part 6: Reflection

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