Numerical Estimation Strategies 10a

Worksheet #4:  Please answer the multiple choice questions below.

1. Laura needs to subtract 236 from 642. Which of the following would be BEST for Laura to ESTIMATE the difference?

a. 600-200

b. 600-300

c. 700-200

d. 700-300

2. Rachel needs to subtract 315 from 730. Which of the following would be BEST for Rachel to ESTIMATE the difference?

a. 700-300

b. 700-400

c. 800-300

d. 800-400

3. Ashley needs to subtract 199 from 509. Which of the following would be BEST for Ashley to ESTIMATE the difference?

a. 600-200

b. 600-100

c. 500-200

d. 500-100

4. Riyad needs to subtract 308 from 399. Which of the following would be BEST for Riyad to ESTIMATE the difference?

a. 400-350

b. 400-300

c. 300-350

d. 300-300

5. Jeremy needs to subtract $14.99 from $50.00. Which of the following would be BEST for Jeremy to ESTIMATE the difference?

a. $50.00 - $14.00

b. $50.00 - $14.50

c. $50.00 - $14.99

d. $50.00 - $15.00

CMTReview Ó2002

6. Corey needs to subtract 625 from 875. Which of the following would be BEST for Corey to ESTIMATE the difference?

a. 800-600

b. 800-700

c. 900-600

d. 900-700

7. Rodrigo needs to subtract 65 from 445. Which of the following would be BEST for Rodrigo to ESTIMATE the difference?

a. 400-100

b. 400-10

c. 500-100

d. 500-10

8. Maureen needs to subtract $6.75 from $20.25. Which of the following would be BEST for Maureen to ESTIMATE the difference?

a. $20.00-$6.00

b. $20.00-$7.00

c. $21.00-$6.00

d. $21.00-$7.00

9. Brian needs to subtract 244 from 708. Which of the following would be BEST for Brian to ESTIMATE the difference?

a. 700-200

b. 700-300

c. 800-200

d. 800-300

10. Nelson needs to subtract 253 from 480. Which of the following would be BEST for Nelson to ESTIMATE the difference?

a. 500-300

b. 500-200

c. 400-300

d. 400-200

11. Myles needs to subtract 281 from 848. Which of the following would be BEST for Myles to ESTIMATE the difference?

a. 800-200

b. 800-300

c. 900-200

d. 900-300

CMTReview Ó2002

12. Marissa needs to subtract 64 from 799. Which of the following would be BEST for Marissa to ESTIMATE the difference?

a. 700-100

b. 700-10

c. 800-100

d. 800-10

13. Darcy wants to multiply 68 by 18. Which of the following would be BEST for Darcy to ESTIMATE the product?

a. 60 x 10

b. 60 x 20

c. 70 x 10

d. 70 x 20

14. Taylor wants to add 725 and 215. Which of the following would be BEST for Taylor to ESTIMATE the sum?

a. 700 + 200

b. 700 + 300

c. 800 + 200

d. 800 + 300

15. Wayne wants to multiply 33 by 18. Which of the following would be BEST for Wayne to ESTIMATE the product?

a. 30 x 18

b. 30 x 20

c. 35 x 18

d. 35 x 20

CMTReview Ó2002