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Multiplication & Division MYSTERY!

Multiplication & Division MYSTERY!. For our BBES 3 rd Graders. Remember: if you know ONE fact in a fact family, you know the WHOLE, ENTIRE fact family!. Fact Families. Like… if you know 2 x 5 = 10. Then you know 5 x 2 = 10. and 10  5 = 2. and 10  2 = 5. Fact Families. Or.

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Multiplication & Division MYSTERY!

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  1. Multiplication & Division MYSTERY! For our BBES 3rd Graders

  2. Remember: if you know ONE fact in a fact family, you know the WHOLE, ENTIRE fact family! Fact Families Like… if you know 2 x 5 = 10 Then you know 5 x 2 = 10 and 10  5 = 2 and 10  2 = 5

  3. Fact Families Or if you know 20  4 = 5 Then you know 20  5 = 4 and 5 x 4 = 20 and 4 x 5 = 20

  4. It’s a PIECE OF CAKE!

  5. Using what you know about fact families, figure out the number that is missing in each number model! Write it on your white board when you know the answer!

  6. What number is missing? 6 x ____ = 36

  7. What number is missing? 6 x 6= 36

  8. What number is missing? ____ x 4 = 12

  9. What number is missing? 3 x 4 = 12

  10. What number is missing? 9  ____ = 3

  11. What number is missing? 9 3= 3

  12. What number is missing? 7 x ____ = 49

  13. What number is missing? 7 x 7= 49

  14. What number is missing? 9 x ____ = 27

  15. What number is missing? 9 x 3= 27

  16. What number is missing? 56  ____ = 7

  17. What number is missing? 56 8= 7

  18. What number is missing? 5 x ____ = 40

  19. What number is missing? 5 x 8= 40

  20. What number is missing? 10  ____ = 2

  21. What number is missing? 10 5= 2

  22. What number is missing? 3 x ____ = 24

  23. What number is missing? 3 x 8= 24

  24. What number is missing? 81  ____ = 9

  25. What number is missing? 81 9= 9

  26. What number is missing? 2 x ____ = 20

  27. What number is missing? 2 x 10= 20

  28. What number is missing? 18  ____ = 3

  29. What number is missing? 18 6= 3

  30. What number is missing? 12 x ____ = 144

  31. What number is missing? 12 x 12= 144

  32. What number is missing? 32  ____ = 8

  33. What number is missing? 32 4= 8

  34. What number is missing? 10 x ____ = 50

  35. What number is missing? 10 x 5= 50

  36. What number is missing? 8  ____ = 8

  37. What number is missing? 8 1= 8

  38. Now look at the number model given on each of the next slides. Write the three number models that are in the same fact family as those equations.

  39. What equations complete the fact family? 7 x 3 = 21 ____ x ____ = _____ ____  ____ = _____ ____  ____ = _____

  40. What equations complete the fact family? 7 x 3 = 21 3 x 7 = 21 217 = 3 21 3 = 7

  41. What equations complete the fact family? 18  9 = 2 ____  ____ = _____ ____ x ____ = _____ ____ x ____ = _____

  42. What equations complete the fact family? 18  9 = 2 182 = 9 2x9 = 18 9 x2 = 18

  43. What equations complete the fact family? 4 x 2 = 8 ____ x ____ = _____ ____  ____ = _____ ____  ____ = _____

  44. What equations complete the fact family? 4 x 2 = 8 2 x 4 = 8 82 = 4 8 4 = 2

  45. What equations complete the fact family? 3 x 11 = 33 ____ x ____ = _____ ____  ____ = _____ ____  ____ = _____

  46. What equations complete the fact family? 3 x 11 = 33 11 x 3 = 33 3311 = 3 33 3 = 11

  47. Way to go!!!

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