Keynote presentation for subtraction review (3rd grade)

1. Subtraction
Subtraction with Re-Grouping

2. Subtraction with Re-Grouping
1. Start with the ONES place
Hundred Ten One
5 7 4
- 2 8 9

3. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9

4. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9

5. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.

6. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.

7. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.

8. Subtraction with Re-Grouping
1. Start with the ONES place
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.

9. Subtraction with Re-Grouping
1. Start with the ONES place
6
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.

10. Subtraction with Re-Grouping
1. Start with the ONES place
6
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.
4. Add the "10" to your ONES digit.

11. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.
4. Add the "10" to your ONES digit.

12. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS.
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.

13. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.

14. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

15. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

16. Subtraction with Re-Grouping
1. Start with the ONES place
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

17. Subtraction with Re-Grouping
1. Start with the ONES place 4 6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

18. Subtraction with Re-Grouping
1. Start with the ONES place 4 16
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

19. Subtraction with Re-Grouping
1. Start with the ONES place 4 16
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 8 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

20. Subtraction with Re-Grouping
1. Start with the ONES place 4 16
6 14
2. Ask if the ONES digit in the Hundred Ten One
MINUEND is large enough to subtract 5 7 4
the ONES digit in the subtrahend.
- 2 8 9
3. If it is not, you will need to RE-GROUP
(or borrow from) the TENS. 2 8 5
4. Add the "10" to your ONES digit.
5. Now, you'll have enough to subtract.
6. Repeat until all the digits have been
subtracted

21. Try it again
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8

22. Try it again
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8

23. Try it again
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8

24. Try it again
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8

25. Try it again
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8

26. Try it again
Thousand Hundred
4
Ten One
3 2 5 6
- 1 3 7 8

27. Try it again
Thousand Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8

28. Try it again
Thousand Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
8

29. Try it again
Thousand Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
8

30. Try it again
Thousand Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
8

31. Try it again
Thousand
1
Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
8

32. Try it again
14
Thousand
1
Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
8

33. Try it again
14
Thousand
1
Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
7 8

34. Try it again
14
Thousand
1
Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
7 8

35. Try it again
14
Thousand
1
Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
7 8

36. Try it again
14
2 1
Thousand Hundred
4 16
Ten One
3 2 5 6
- 1 3 7 8
7 8

37. Try it again
11 14
2 1 4 16
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8
7 8

38. Try it again
11 14
2 1 4 16
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8
8 7 8

39. Try it again
11 14
2 1 4 16
Thousand Hundred Ten One
3 2 5 6
- 1 3 7 8
1 8 7 8

40. Try These Ones
3678 - 2975 =
6324 - 3978 =
7421 - 6857 =

41. Try These Ones
3678 - 2975 = 703
6324 - 3978 =
7421 - 6857 =

42. Try These Ones
3678 - 2975 = 703
6324 - 3978 = 2351
7421 - 6857 =

43. Try These Ones
3678 - 2975 = 703
6324 - 3978 = 2351
7421 - 6857 =
564