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Estimating Sums (Math 3)
- 3. EXAMPLE:
- 4. 500
- 5. 7000
- 6. 800
- 7. 9000
- 8. 100
- 9. 500
- 10. 5000
- 11. 4000
- 12. It was Antonio’s Birthday party. There were189 males and 98 females who attended his party. About how many people attended the party?
- 13. Estimation is finding a number close enough to the right answer or actual answer
- 14. Round off the numbers first to the highest place value before adding. How to find the estimated sum?
- 15. It was Antonio’s Birthday party. There were189 males and 98 females who attended his party. About how many people attended the party?
- 17. The amount of money we need for buying our groceries The time it will take to reach a place like school or your home The food a group of people can consume in a week
- 18. The time needed to spend studying all subjects for the periodic exams Amount of money and materials needed to construct a house or a building The amount of money for buying your food in school
- 19. Estimate the sum by rounding each addend to the nearest hundred/nearest thousand. 456 205 + 456 Estimat ed Sum Actual Sum + 5 481 + 2 927 Estimat ed Sum Actual Sum +
- 20. Estimate the sum by rounding each addend to the nearest hundred/nearest thousand. 123 987 + Estimat ed Sum Actual Sum + 7 727 + 1 085 Estimat ed Sum Actual Sum +
- 21. Estimate the sum by rounding each addend to the nearest hundred or thousand.
- 22. M 368 478 + +
- 23. A 815 102 + +
- 27. Choose the rounded addends. + a . b . c . 234 342 200 + 300 300 + 300 300 + 400
- 28. Choose the rounded addends. + a . b . c . 359 256 300 + 200 300 + 300 400 + 300
- 29. Choose the rounded addends. + a . b . c . 4 689 4 679 4000 + 4000 5000 + 4000 5000 + 5000
- 30. Find the estimated sum. Match column A with Column B.
- 31. Column A Column B 342 + 323 7 522 + 8 423 a. 16 000 ___1. ___2. ___3. d c a ___4. 553 + 182 6 359 + 3 754 b. 10 000 c. 800 d. 600 b