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Relating Multiplication with Division
Let’s Remember: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
Let’s See that Again ,[object Object]
Now, was that so hard?
You Try ,[object Object],[object Object],[object Object]
Jacob solved the following multiplication equation: 23 x 8 = 184 What number sentence could he use to check his answer? D 100
23 x 8 = 184 184  ÷ 8 = 23 or 184  ÷ 23 = 8 D 100
Problem Solving –  A division problem that you can solve with multiplication ,[object Object]
Think – “Zzzz” ,[object Object],[object Object],[object Object],[object Object]
[object Object]
D 200 Gabrielle solved the following math problem: 32 x 4 = 128 What number sentence could she use to check her answer?
128  ÷ 4 = 32 32 x 4 = 128 D 200
[object Object]
D 400 If 48  ÷ n = 6 What does 6 x n = ?
48 because  n  = 8 48 ÷ 8 = 6 6 x 8 = 48 D 400
True or False The following statement is correct: If  n  x 3 = 18, then  n  = 18  ÷ 3 D 300
True because… If  n  x 3 = 18, then  n  = 18 ÷ 3 n  = 6 6 x 3 = 18  6 = 18 ÷ 3  D 300 ZZZZ N x 3 = 18
True or False The following statement is correct: If 5 x  f  = 35, then 35   = 5  ÷  f D 300
False because… If  5  x  f  = 35, then  f  = 7 And 35 = 5  ÷ 7? NO WAY! D 300 ZZZZZZ 5 x f = 35
Focused and alert,  no sleeping now!
So… if all I have to do is  reverse the number sentence? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Well, how about with variable  N ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is another way to write the equation 54  ÷   n =  6? ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Which statement is correct? A. If  a   ÷ 3 = 7, then  a  = 7 x 4 B. If 5 x 6 =  b , then 6 x  b = 5 C.  If 14  ÷  y  = 2, then  y =  14 x 2 D. If  d  = 24 ÷ 6, then  d  x 6 = 24 D 500

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1.02ewohwreview

  • 2.
  • 3.
  • 4.
  • 5. Now, was that so hard?
  • 6.
  • 7. Jacob solved the following multiplication equation: 23 x 8 = 184 What number sentence could he use to check his answer? D 100
  • 8. 23 x 8 = 184 184 ÷ 8 = 23 or 184 ÷ 23 = 8 D 100
  • 9.
  • 10.
  • 11.
  • 12. D 200 Gabrielle solved the following math problem: 32 x 4 = 128 What number sentence could she use to check her answer?
  • 13. 128 ÷ 4 = 32 32 x 4 = 128 D 200
  • 14.
  • 15. D 400 If 48 ÷ n = 6 What does 6 x n = ?
  • 16. 48 because n = 8 48 ÷ 8 = 6 6 x 8 = 48 D 400
  • 17. True or False The following statement is correct: If n x 3 = 18, then n = 18 ÷ 3 D 300
  • 18. True because… If n x 3 = 18, then n = 18 ÷ 3 n = 6 6 x 3 = 18 6 = 18 ÷ 3 D 300 ZZZZ N x 3 = 18
  • 19. True or False The following statement is correct: If 5 x f = 35, then 35 = 5 ÷ f D 300
  • 20. False because… If 5 x f = 35, then f = 7 And 35 = 5 ÷ 7? NO WAY! D 300 ZZZZZZ 5 x f = 35
  • 21. Focused and alert, no sleeping now!
  • 22.
  • 23.
  • 24.
  • 25.
  • 26. Which statement is correct? A. If a ÷ 3 = 7, then a = 7 x 4 B. If 5 x 6 = b , then 6 x b = 5 C. If 14 ÷ y = 2, then y = 14 x 2 D. If d = 24 ÷ 6, then d x 6 = 24 D 500