1. Subtraction Mixed Numbers
Fractions 13

2. Objective
To be able to subtract mixed numbers with regrouping.

3. How to Subtract
Fractions with
Regrouping

4. To Subtract Mixed Numbers with Regrouping.
Regroup by borrowing one from the 5. 4 1 5 8 5 3 - 8

5. To Subtract Mixed Numbers with Regrouping.
Change the 1 to 8/8. 4 1 8 5 8 8 5 3 - 8

6. To Subtract Mixed Numbers with Regrouping.
Add the 1/8 plus the 8/8. 4 1 8 9 + = 5 8 8 8 5 3 - 8

7. To Subtract Mixed Numbers with Regrouping.
Subtract the fractions. 4 1 8 9 + = 5 8 8 8 5 3 - 8 4 8

8. To Subtract Mixed Numbers with Regrouping.
Subtract the whole numbers. 4 1 8 9 + = 5 8 8 8 5 3 - 8 4 1 8

9. To Subtract Mixed Numbers with Regrouping.
Simplify your fraction. 4 1 8 9 + = 5 8 8 8 5 3 - 8 4 4 1 1 ÷ = 1 8 2

10. Now you can do it! 2 4 7 - 7 = 6 9 9 9

11. Subtract. 4
Regroup by
borrowing 1
from the 5. 3 5 9 7 2 - 9

12. Subtract. 4
Change
the 1 to
9/9. 3 9 5 9 7 2 - 9

13. Subtract. 4
Add 3/9 +
9/9. 3 9 12 5 + = 9 9 7 2 - 9

14. Subtract. 4
Subtract
12/9 – 7/9. 3 9 12 5 + = 9 9 9 7 2 - 9 5 9

15. Subtract. 4
Subtract
4 – 2. 3 9 12 5 + = 9 9 9 7 2 - 9 5 2 9

16. Subtract. 5
Regroup by
borrowing 1
from the 6. 1 6 5 4 1 - 5

17. Subtract. 5
Change
the 1 to
5/5. 1 5 6 5 4 1 - 5

18. Subtract. 5
Add 1/5 +
5/5. 1 5 6 6 + = 5 5 5 4 1 - 5

19. Subtract. 5
Subtract
6/5 – 4/5. 1 5 6 6 + = 5 5 5 4 1 - 5 2 5

20. 5 1 5 6 6 + = 5 5 5 4 1 - 5 2 4 5 Subtract. Subtract 5 – 1. Answer
4 2/5 4 5

21. Objective
To be able to subtract mixed numbers with unlike denominators with regrouping.

22. How to Subtract
Mixed Numbers
with Regrouping

23. To Subtract Mixed Numbers with Regrouping.
Find the LCD or LCM of the denominators. 1 5 8 8 3 3 - 4 8

24. To Subtract Mixed Numbers with Regrouping.
Find the equivalent fractions with 8 as a denominator. 1
x 1 1 = 5 8
x 1 8 3
x 2 6 3 - 4
x 2 8

25. To Subtract Mixed Numbers with Regrouping.
Regroup by borrowing one from the 5. 4 1 1 = 5 8 8 3 6 3 = - 4 8

26. To Subtract Mixed Numbers with Regrouping.
Change the 1 to 8/8. 4 1 1 8 = 5 8 8 8 3 6 3 = - 4 8

27. To Subtract Mixed Numbers with Regrouping.
Add the 1/8 and 8/8 together. 4 1 1 8 9 = + = 5 8 8 8 8 3 6 3 = - 4 8

28. To Subtract Mixed Numbers with Regrouping.
Subtract the fractions. 4 1 1 8 9 = + = 5 8 8 8 8 3 6 3 = - 4 8 3 8

29. To Subtract Mixed Numbers with Regrouping.
Subtract the whole numbers. 4 1 1 8 9 = + = 5 8 8 8 8 3 6 3 = - 4 8 3 1 8

30. Get your white boards out!1 7 5 - 5 = 4 3 9 9

31. 3 5 9 9 2 2 - 3 9 Subtract. Use the short cut to find the least common
denominator. 5 9 9 2 2 - 3 9

32. 3 1 3 5 x = 9 9 2 3 6 x 2 = - 3 3 9 Subtract. Find the equivalent
fractions with
9 as a
denominator. 3 1 3 5 x = 9 9 2 3 6 x 2 = - 3 3 9

33. 4 3 1 3 5 x = 9 1 9 2 3 6 x 2 = - 3 3 9 Subtract. Regroup by
borrowing 1
from the 5. 5 x = 9 1 9 2 3 6 x 2 = - 3 3 9

34. 4 3 3 9 5 = 9 9 9 2 6 = 2 - 3 9 Subtract. Change the 1 to a fraction
with 9 as a
denominator. 5 = 9 9 9 2 6 = 2 - 3 9

35. Subtract. 4 3 3 9 12 5 = + = 9 9 9 9 2 6 = 2
Add 3/9 + 9/9. - 3 9

36. 4 3 3 9 12 5 = + = 9 9 9 9 2 6 = 2 - 3 9 6 9 Subtract. Subtract 12/9
minus 6/9. - 3 9 6 9

37. 4 3 3 9 12 5 = + = 9 9 9 9 2 6 = 2 - 3 9 6 2 9 Subtract. Subtract 4
minus 2. - 3 9 6 2 9

38. Subtract. 4 3 3 9 12 5 = + = 9 9 9 9 2 6
Simplify your
fraction. = 2 - 3 9 6 3 2 2 ÷ = 9 3

39. Subtract. 4 3 3 9 12 5 = + = 9 9 9 9 2 6
Your answer
is 2 2/3. = 2 - 3 9 6 3 2 2 ÷ = 9 3 3