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Tr.Reference 29.ppt
- 2. Objective Today we will learn to write multiplication and division fact families.
- 3. Definitions Addend - Any number being added. 6 + 5 = 11 Inverse Operation - An opposite operation that undoes another. 5 + 4 = 9 9 - 5 = 4 Lets Review
- 4. Addition/Subtraction Fact Families are found by: Starting with a simple addition fact. ( 2 + 5 = 7) Changing the addends around. (5 + 2 = 7) Writing the Inverse operations for both. (7 - 2 = 5 & 7 - 5 = 2)
- 5. What are the 4 members of the Fact Family of 3 + 4 = 7? 3 + 4 = 7 4 + 3 = 7 7 - 3 = 4 7 - 4 = 3
- 6. What are the 4 members of the Fact Family of 8 + 1 = 9? 8 + 1 = 9 1 + 8 = 9 9 - 8 = 1 9 - 1 = 8
- 7. Definitions Factors - The numbers being multiplied. 4 x 8 = 32 Inverse Operation - An opposite operation that undoes another. 4 x 8 = 32 32 歎 4 = 8 Multiplication
- 8. Multiplication/Division Fact Families are found by: Starting with a simple multiplication fact. ( 3 x 9 = 27) Changing the Factors around. (9 x 3 = 27) Writing the Inverse operations for both. (27 歎 3 = 9 & 27 歎 9 = 3)
- 9. What are the 4 members of the Fact Family of 3 x 7 = 21? 3 x 7 = 21 7 x 3 = 21 21 歎 3 = 7 21 歎 7 = 3 model
- 10. What are the 4 members of the Fact Family of 6 x 4 = 24? 6 x 4 = 24 4 x 6 = 24 24 歎 6 = 4 24 歎 4 = 6
- 11. Multiplication/Division Fact Families are found by: Starting with a simple multiplication fact. ( 3 x 9 = 27) Changing the Factors around. (9 x 3 = 27) Writing the Inverse operations for both. (27 歎 3 = 9 & 27 歎 9 = 3)
- 12. What are the 4 members of the Fact Family of 7 x 8 = 56? 7 x 8 = 56 8 x 7 = 56 56 歎 7 = 8 56 歎 8 = 7 Guided
- 13. What are the 4 members of the Fact Family of 9 x 7 = 63? 9 x 7 = 63 7 x 9 = 63 63 歎 9 = 7 63 歎 7 = 9
- 14. What are the 4 members of the Fact Family of 6 x 7 = 42? 6 x 7 = 42 7 x 6 = 42 42 歎 6 = 7 42 歎 7 = 6
- 15. Multiplication/Division Fact Families are found by: Starting with a simple multiplication fact. ( 3 x 9 = 27) Changing the Factors around. (9 x 3 = 27) Writing the Inverse operations for both. (27 歎 3 = 9 & 27 歎 9 = 3) CFU
- 16. Closure A fact family will have two multiplication problems and two division problems. Inverse Operation - An opposite operation that undoes another. 3x4=12 *** 12 歎 4 = 3
- 17. Independent Practice Write a multiplication and division fact family for the following: 1) 5 x6 = 30 6) 9x8 = 72 2) 8x3 = 24 7) 4x8 = 32 3) 7x2 = 14 8) 3x9 = 27 4) 6x8 = 48 9) 9x 2 =18 5) 2x4 = 8 10) 4x 6 = 24
- 18. Answers 1) 5 x6 = 30 6x5=30 30 歎 6=5 30 歎 5=6 2) 8x3=24 3x8=24 24 歎 8=3 24 歎 3=8 3) 7x2=24 2x7=14 14 歎 2=7 14 歎 7=2 4) 6x8=48 8x6=48 48 歎 6=8 48 歎 8=6 5) 2x4=8 4x2=8 8 歎 4=2 8 歎 2=4
- 19. 6) 9x8=72 8x9=72 72 歎 9=8 72 歎 8=0 7) 4x8=32 8x4=32 32 歎 8=4 32 歎 4=8 8) 3x9=27 9x3=27 27 歎 9=3 27 歎 3=9 9) 9x2=18 2x9=18 18 歎 9=2 18 歎 2=9 10) 4x6=24 6x4=24 24 歎 6=4 24 歎 4=6