1. © 2007 M. Tallman

2. = 6 ×318

3. = 6 ×318 = 3 ×618

4. © 2007 M. Tallman = 18 ÷63 = 6 ×318 = 3 ×6

5. © 2007 M. Tallman = 18 ÷63 = 6 ×3 = 3 ×6 = 18 ÷36

6. © 2007 M. Tallman = 7 ×642

7. = 7 ×642 = 6 ×742

8. © 2007 M. Tallman = 7 ×642 = 42 ÷67 = 6 ×7

9. © 2007 M. Tallman = 7 ×642 = ÷67 = 6 ×7 = 42 ÷76

10. © 2007 M. Tallman 7 × 8 = k k = 56 h = 8 s = 7 h × 7 = 56 56 ÷ 7 = h 56 ÷ 8 = s h = 8 Use what you know about fact families to solve for the unknown variable.

11. 9 × 3 = y y = 27 x = 3 v = 9 x × 9 = 27 27 ÷ x = 9 27 ÷ 3 = v x = 3 Use what you know about fact families to solve for the unknown variable.

12. © 2007 M. Tallman 8 × 9 = a a = 72 b = 8 a = 72 9 × b = 72 72 ÷ 8 = c a ÷ 9 = 8 c = 9 Use what you know about fact families to solve for the unknown variable.

13. © 2007 M. Tallman Find the product or quotient, then write the related number sentences. 5 × 7 = 35 7 × 5 = 35 35 ÷ 7 = 5 35 ÷ 5 = 7

14. Find the product or quotient, then write the related number sentences. 84 ÷ 7 = 12 84 ÷ 12 = 7 12 × 7 = 84 7 × 12 = 84

15. © 2007 M. Tallman Find the product or quotient, then write the related number sentences. 42 ÷ 7 = 6 42 ÷ 6 = 7 7 × 6 = 42 6 × 7 = 42

16. © 2007 M. Tallman Find the product or quotient, then write the related number sentences. 9 × 9 = 81 81 ÷ 9 = 9

17. © 2007 M. Tallman Write the fact family for the set of numbers. 54, 6, 9 6 × 9 = 54 9 × 6 = 54 54 ÷ 6 = 9 54 ÷ 9 = 6

18. Write the fact family for the set of numbers. 12, 8, 96 12 × 8 = 96 8 × 12 = 96 96 ÷ 12 = 8 96 ÷ 8 = 12

19. © 2007 M. Tallman Write the fact family for the set of numbers. 11, 12, 132 11 × 12 = 132 12 × 11 = 132 132 ÷ 11 = 12 132 ÷ 12 = 11

20. © 2007 M. Tallman Write the fact family for the set of numbers. 49, 7, 7 49 ÷ 7 = 7 7 × 7 = 49