Numerical Estimation Strategies 10a    

Worksheet #3: Please answer the multiple choice questions below.

1. Andrew needs to subtract 478 from 860. Which of the following would be BEST for Andrew to ESTIMATE the difference?

a. 800-400

b. 800-500

c. 900-400

d. 900-500

2. Raul needs to subtract 182 from 508. Which of the following would be BEST for Raul to ESTIMATE the difference?

a. 500-100

b. 600-100

c. 500-200

d. 600-200

3. Alyson needs to subtract 178 from 435. Which of the following would be BEST for Alyson to ESTIMATE the difference?

a. 400-100

b. 400-200

c. 500-200

d. 500-100

4. Gus needs to subtract 205 from 679. Which of the following would be BEST for Gus to ESTIMATE the difference?

a. 600-200

b. 700-200

c. 600-250

d. 700-250

5. Joey needs to subtract $5.99 from $10.00. Which of the following would be BEST for Joey to ESTIMATE the difference?

a. $10.00 - $5.00

b. $10.00 - $5.50

c. $10.00 - $7.00

d. $10.00 - $6.00

CMTReview Ó2002

6. Christopher needs to subtract 415 from 887. Which of the following would be BEST for Christopher to ESTIMATE the difference?

a. 800-400

b. 900-400

c. 800-500

d. 900-500

7. Derrick needs to subtract 45 from 335. Which of the following would be BEST for Derrick to ESTIMATE the difference?

a. 300-50

b. 300-150

c. 400-100

d. 400-50

8. Melanie needs to subtract $4.75 from $11.50. Which of the following would be BEST for Melanie to ESTIMATE the difference?

a. $11.00-$4.00

b. $11.00-$5.00

c. $12.00-$4.00

d. $12.00-$5.00

9. Dale needs to subtract 534 from 609. Which of the following would be BEST for Dale to ESTIMATE the difference?

a. 600-500

b. 600-500

c. 700-600

d. 700-600

10. Phillip needs to subtract 417 from 830. Which of the following would be BEST for Phillip to ESTIMATE the difference?

a. 800-400

b. 800-500

c. 900-400

d. 900-500

11. Larry needs to subtract 371 from 739. Which of the following would be BEST for Larry to ESTIMATE the difference?

a. 700-400

b. 700-300

c. 800-300

d. 800-400

CMTReview Ó2002

12. Alyssa needs to subtract 75 from 289. Which of the following would be BEST for Alyssa to ESTIMATE the difference?

a. 200-10

b. 200-100

c. 300-10

d. 300-100

13. Eric wants to multiply 43 by 17. Which of the following would be BEST for Eric to ESTIMATE the product?

a. 40 x 10

b. 40 x 20

c. 50 x 10

d. 50 x 20

14. Tyler wants to add 427 and 299. Which of the following would be BEST for Tyler to ESTIMATE the sum?

a. 500 + 300

b. 500 + 200

c. 400 + 300

d. 400 + 200

15. Winifred wants to multiply 25 by 15. Which of the following would be BEST for Winifred to ESTIMATE the product?

a. 20 x 10

b. 20 x 20

c. 30 x 10

d. 30 x 20

CMTReview Ó2002