Numerical Estimation Strategies 10a   

Worksheet #2: Please answer the multiple choice questions below.

1. Kamiya needs to subtract 164 from 698. Which of the following would be BEST for Kamiya to ESTIMATE the difference?

a. 700-200

b. 600-100

c. 600-200

d. 700-100

2. Paul needs to subtract 415 from 608. Which of the following would be BEST for Paul to ESTIMATE the difference?

a. 700-500

b. 700-400

c. 600-400

d. 600-500

3. Alycia needs to subtract 283 from 399. Which of the following would be BEST for Alycia to ESTIMATE the difference?

a. 400-200

b. 400-250

c. 400-300

d. 300-250

4. Sam needs to subtract 607 from 699. Which of the following would be BEST for Sam to ESTIMATE the difference?

a. 700-600

b. 700-500

c. 600-600

d. 700-650

5. Juan needs to subtract $12.99 from $20.00. Which of the following would be BEST for Juan to ESTIMATE the difference?

a. $20.00 - $10.00

b. $20.00 - $12.50

c. $20.00 - $13.00

d. $20.00 - $12.99

CMTReview Ó2002

6. Carla needs to subtract 42  from 865. Which of the following would be BEST for Carla to ESTIMATE the difference?

a. 800-400

b. 800-500

c. 900-500

d. 900-400

7. Darrell needs to subtract 67 from 375. Which of the following would be BEST for Darrell to ESTIMATE the difference?

a. 400-100

b. 400-10

c. 300-100

d. 300-10

8. Melanie needs to subtract $7.55 from $20.35. Which of the following would be BEST for Melanie to ESTIMATE the difference?

a. $20.00-$7.00

b. $20.00-$8.00

c. $21.00-$7.00

d. $21.00-$8.00

9. Karen needs to subtract 124 from 412. Which of the following would be BEST for Karen to ESTIMATE the difference?

a. 500-100

b. 500-200

c. 400-200

d. 400-100

10. Beatrice needs to subtract 534 from 867. Which of the following would be BEST for Beatrice to ESTIMATE the difference?

a. 800-500

b. 900-500

c. 800-600

d. 900-600

11. David needs to subtract 381 from 734. Which of the following would be BEST for David to ESTIMATE the difference?

a. 700-400

b. 700-300

c. 800-400

d. 800-300

CMTReview Ó2002

12. Luis needs to subtract 73 from 399. Which of the following would be BEST for Luis to ESTIMATE the difference?

a. 300-100

b. 300-10

c. 400-100

d. 400-10

13. Donovan wants to multiply 26 by 63. Which of the following would be BEST for Donovan to ESTIMATE the product?

a. 30 x 70

b. 20 x 70

c. 20 x 60

d. 30 x 60

14. Elissa wants to add 524 and 587. Which of the following would be BEST for Elissa to ESTIMATE the sum?

a. 500 + 500

b. 500 + 600

c. 600 + 700

d. 600 + 600

15. William wants to multiply 52 by 12. Which of the following would be BEST for William to ESTIMATE the product?

a. 50 x 20

b. 60 x 10

c. 55 x 10

d. 50 x 10

CMTReview Ó2002