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Reteach and Skills Practice Workbook

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8–1<br />

Name<br />

<strong>Skills</strong> <strong>Practice</strong><br />

Date<br />

4NS3.3, 4NS3.2<br />

Multiply by Tens<br />

Multiply.<br />

1. 12 × 30 = 15. 80 × 70 =<br />

2. 21 × 40 = 16. 26 × 40 =<br />

3. 14 × 60 = 17. 17 × 80 =<br />

4. 31 × 70 = 18. 135 × 50 =<br />

5. 25 × 50 = 19. 207 × 60 =<br />

6. 24 × 40 = 20. 399 × 50 =<br />

7. 61 × 30 = 21. 756 × 30 =<br />

8. 48 × 20 = 22. 375 × 20 =<br />

9. 19 × 30 = 23. 409 × 40 =<br />

10. 65 × 40 = 24. 490 × 70 =<br />

11. 48 × 40 = 25. 967 × 10 =<br />

12. 14 × 50 = 26. 975 × 80 =<br />

13. 49 × 70 = 27. 549 × 50 =<br />

14. 42 × 90 = 28. 105 × 30 =<br />

Solve.<br />

29. Classroom chairs cost $39. How much will it cost to buy 30 chairs?<br />

30. A computer costs $986. How much will it cost to buy<br />

20 computers?<br />

Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.<br />

Grade 4 134 Chapter 8

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