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Practice Workbook SE - East Penn School District

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Name<br />

LESSON 10.1<br />

Mental Math: Multiplication Patterns<br />

Use a basic fact and a pattern to write each product.<br />

1. 2. 3.<br />

a. 5 50<br />

b. 5 500<br />

a. 9 80<br />

b. 9 800<br />

a. 2 3,000<br />

b. 2 30,000<br />

4. 5. 6.<br />

a. 9 20<br />

b. 9 200<br />

a. 7 9,000<br />

b. 7 90,000<br />

a. 4 4,000<br />

b. 4 40,000<br />

Multiply mentally. Write the basic multiplication fact and the product.<br />

7. 5 700 8. 9 400 9. 9 900<br />

10. 4 500 11. 3 4,000 12. 8 3,000<br />

Find the value of n.<br />

13. 6 40,000 n 14. n 3 600 15. n 500 3,500<br />

16. 3 n 15,000 17. n 8 = 640 18. 7 n = 42,000<br />

19. 7,000 n = 49,000 20. 6 n = 5,400 21. n 6 = 1,800<br />

Mixed Review<br />

22. Write the time in words. 23. Write the time in words.<br />

© Harcourt<br />

PW52<br />

<strong>Practice</strong>

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