Numerical Estimation Strategies 10a

Worksheet #1:  Please answer the multiple choice questions below.

1. Tynisha needs to subtract 254 from 599. Which of the following would be BEST for Tynisha to ESTIMATE the difference?

a. 500-200

b. 500-300

c. 600-200

d. 600-300

2. Robert needs to subtract 525 from 802. Which of the following would be BEST for Robert to ESTIMATE the difference?

a. 800-500

b. 800-600

c. 900-500

d. 900-600

3. Andrea needs to subtract 203 from 299. Which of the following would be BEST for Andrea to ESTIMATE the difference?

a. 200-200

b. 200-150

c. 300-200

d. 300-250

4. Gil needs to subtract 805 from 899. Which of the following would be BEST for Gil to ESTIMATE the difference?

a. 900-700

b. 900-800

c. 800-700

d. 800-750

5. Jose needs to subtract $10.99 from $20.00. Which of the following would be BEST for Jose to ESTIMATE the difference?

a. $20.00 - $10.00

b. $20.00 - $10.50

c. $20.00 - $10.99

d. $20.00 - $11.00

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6. Carlos needs to subtract 225 from 755. Which of the following would be BEST for Carlos to ESTIMATE the difference?

a. 700-200

b. 700-300

c. 800-200

d. 800-300

7. Donique needs to subtract 55 from 225. Which of the following would be BEST for Donique to ESTIMATE the difference?

a. 200-100

b. 200-10

c. 300-100

d. 300-10

8. Megan needs to subtract $5.55 from $10.25. Which of the following would be BEST for Megan to ESTIMATE the difference?

a. $10.00-$5.00

b. $10.00-$6.00

c. $11.00-$5.00

d. $11.00-$6.00

9. Dawn needs to subtract 624 from 708. Which of the following would be BEST for Dawn to ESTIMATE the difference?

a. 700-600

b. 700-700

c. 800-600

d. 800-700

10. Brandon needs to subtract 429 from 651. Which of the following would be BEST for Brandon to ESTIMATE the difference?

a. 600-400

b. 600-500

c. 700-400

d. 700-500

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11. Daniel needs to subtract 321 from 628. Which of the following would be BEST for Daniel to ESTIMATE the difference?

a. 600-300

b. 600-400

c. 700-300

d. 700-400

12. Lindsey needs to subtract 81 from 599. Which of the following would be BEST for Lindsey to ESTIMATE the difference?

a. 500-100

b. 500-10

c. 600-100

d. 600-10

13. David wants to multiply 39 by 23. Which of the following would be BEST for David to ESTIMATE the product?

a. 40 x 20

b. 30 x 25

c. 30 x 20

d. 40 x 25

14. Tyshon wants to add 639 and 569. Which of the following would be BEST for Tyshon to ESTIMATE the sum?

a. 600 + 500

b. 600 + 600

c. 700 + 500

d. 700 + 600

15. Wilbur wants to multiply 42 by 6. Which of the following would be BEST for Wilbur to ESTIMATE the product?

a. 45 x 6

b. 40 x 6

c. 50 x 6

d. 55 x 6

CMTReview Ó2002