1. Everyday Math Grade 4 – Lesson 2.7 Addition of Multi-digit Numbers
Copyright © 2010 Kelly Mott

2. Lesson Components: Part 1: Math Boxes 2.7 Page 41 Part 2: Review
Part 3: PP Regroup the Ones
Part 4: PP Regroup the Tens
Part 5: PP Regroup More than Once
Part 6: PP Regrouping 4 Digits
Part 7: Math Journal 39
Part 8: Math Journal 40
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3. Math Boxes
Lesson 2.7
Page 41
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4. Math Box 1:
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5. Math Box 2:
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6. Math Box 3:
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7. Math Box 4:
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8. Math Box 5:
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10. REVIEW
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11. Name Collection Box 24 1
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12. Place Value Helpful Hint: You can think of each period as a family.
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13. Place Value Practice 1
What number is in the ten’s place? ____________________________ hundred thousand’s place? ________________ ten million’s place? ______________________ thousand’s place? _______________________ 4 6 7 9 5 1 3 2 8 2

14. Place Value Practice 2
What number is in the hundred’s place? ________________________ hundred million’s place? __________________ ten thousand’s place? ____________________ million’s place? _________________________ 4 6 7 9 5 1 3 2 8 3

15. Value of a Number Practice 1
Problem #1: 290, 763, 891 What is the 8 worth? ___________________________ Problem#2: 856, 742, 121 What is the 7 worth? ___________________________ Problem#3: 260, 158, 403 What is the 6 worth? ___________________________ 4
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16. Expanded Form Practice 1
Problem 1: 116,350,601
__________________ + __________________ +
__________________
Problem 2: 800,935,022
__________________ + __________________ 5
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17. LOOK AT THE DATA: 3 5 6 6 9 9 11 11 11 What is the maximum?
_________________________________________________________
What is the minimum?
What is the range (maximum – minimum)?
What is the mode (most frequent) ?
What is the median (middle number)? 6
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19. THREE DIGIT ADDITION REGROUP THE ONES
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20. Understanding Regrouping the Ones
When we add, we start with the ones column.
8 + 3 = 11
We can think of 11 as:
We can also think of 11
463
+ 118
__________________ 7
Copyright © 2010 Kelly Mott

21. Understanding Regrouping the Ones
Let’s look at another problem.
Start with the ones.
9 + 4 = 13
We can think of 13 as:
We can also think of 13
224
+ 219
__________________ 8
Copyright © 2010 Kelly Mott

22. Understanding Regrouping the Ones
Let’s look at one more problem.
Start with the ones.
8 + 9 = 17
We can think of 17 as:
We can also think of 17
448
+ 249
__________________ 9
Copyright © 2010 Kelly Mott

23. Understanding Regrouping the Ones
When we add, we start with the ones column.
6 + 5 = 11
We can think of 11 as:
We can also think of 11 as:
236
+ 145
__________________ 10
Copyright © 2010 Kelly Mott

24. Understanding Regrouping
Here’s a quick video to reinforce what we just learned:
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25. Does this make sense?
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26. 428 + 166 467 + 124 Regrouping Ones A. B. __________________ 11
__________________ A.
467
+ 124
__________________ B. 11
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27. 354 + 338 452 + 139 Regrouping Ones C. D. __________________ 12
__________________ C.
452
+ 139
__________________ D. 12
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28. 842 + 109 323 + 259 Regrouping Ones E. F. __________________ 13
__________________ E.
323
+ 259
__________________ F. 13
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29. 627 + 259 648 + 237 Regrouping Ones G. H. __________________ 14
__________________ G.
648
+ 237
__________________ H. 14
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30. 137 + 323 529 + 143 Regrouping Ones I. J. __________________ 15
__________________ I.
529
+ 143
__________________ J. 15
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31. Does this make sense?
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32. SUPPLEMENTAL: ORANGE MATH STEPS PAGES 39-40
HOMEWORK
SUPPLEMENTAL: ORANGE MATH STEPS PAGES 39-40
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36. Copyright © 2010 Kelly Mott

37. THREE DIGIT ADDITION REGROUP THE TENS
Copyright © 2010 Kelly Mott

38. Understanding Regrouping the Tens
When we add, we start with the ones column.
4 + 1 = 5 ones
We don’t have to regroup
because 5 is a SINGLE DIGIT!
Then add the tens.
6 + 7 = 13 tens
We can think of 13 tens as:
We can also think of 13 tens as:
261
+ 174
__________________ 16
Copyright © 2010 Kelly Mott

39. Understanding Regrouping the Tens
When we add, we start with the ones column.
2 + 1 = 3 ones
We don’t have to regroup
because 3 is a SINGLE DIGIT!
Then add the tens.
7 + 8 = 15 tens
We can think of 15 tens as:
We can also think of 15 tens as:
__________________ 17
Copyright © 2010 Kelly Mott

40. Understanding Regrouping the Tens
When we add, we start with the ones column.
2 + 5 = 7 ones
We don’t have to regroup
because 7 is a SINGLE DIGIT!
Then add the tens.
9 + 3 = 12 tens
We can think of 12 tens as:
We can also think of 12 tens as:
532
+ 195
__________________ 18
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41. Does this make sense?
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42. 164 + 382 462 + 271 Regrouping Tens A. B. __________________ 19
__________________ A.
462
+ 271
__________________ B. 19
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43. 343 + 181 452 + 272 Regrouping Tens C. D. __________________ 20
__________________ C.
452
+ 272
__________________ D. 20
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44. 394 + 245 __________________ 432 + 193 Regrouping Tens E. F.21
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45. 481 + 162 526 + 392 Regrouping Tens G. H. __________________ 22
__________________ G.
526
+ 392
__________________ H. 22
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46. 364 + 152 497 + 212 Regrouping Tens I. J. __________________ 23
__________________ I.
497
+ 212
__________________ J. 23
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47. Does this make sense?
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48. SUPPLEMENTAL: ORANGE MATH STEPS PAGES 41-42
HOMEWORK
SUPPLEMENTAL: ORANGE MATH STEPS PAGES 41-42
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52. Copyright © 2010 Kelly Mott

53. THREE DIGIT ADDITION REGROUP MORE THAN ONCE
Copyright © 2010 Kelly Mott

54. Understanding Regrouping More Than Once
8 + 3 = 11 ones
We can think of 11 ones as:
We can also think of 11 ones as:
= 12 tens
We can think of 12 tens as:
We can also think of 12 tens as:
268
+ 153
__________________ 24
Copyright © 2010 Kelly Mott

55. Understanding Regrouping More Than Once
8 + 3 = 10 ones
We can think of 10 ones as:
We can also think of 10 ones as:
= 14 tens
We can think of 14 tens as:
We can also think of 14 tens as:
388
+ 152
__________________ 25
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56. Does this make sense?
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57. Regrouping More than Once
437
__________________ A.
275
+ 478
__________________ B. 26
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58. Regrouping More than Once
283
__________________ C.
569
+ 364
__________________ D. 27
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59. Regrouping More than Once
468
__________________ E.
189
+ 436
__________________ F. 28
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60. Regrouping More than Once
698
__________________ G.
279
+ 268
__________________ H. 29
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61. Does this make sense?
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62. SUPPLEMENTAL: ORANGE MATH STEPS PAGES 43-44
HOMEWORK
SUPPLEMENTAL: ORANGE MATH STEPS PAGES 43-44
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66. Copyright © 2010 Kelly Mott

67. FOUR DIGIT ADDITION REGROUP MORE THAN ONCE
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68. 4,896 1,524 1,383 2,647 + + A. B. Four Digit Addition 30
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69. 2,383 1,642 5,978 2,632 + + C. D. Four Digit Addition 31
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70. 2,383 1,642 5,978 2,632 + + C. D. Four Digit Addition 32
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71. SUPPLEMENTAL: ORANGE MATH STEPS PAGES 57-58
HOMEWORK
SUPPLEMENTAL: ORANGE MATH STEPS PAGES 57-58
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75. Everyday Math Journal Page: 39
HOMEWORK
Everyday Math Journal Page: 39
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78. Everyday Math Journal Page: 40
HOMEWORK
Everyday Math Journal Page: 40
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83. Copyright © 2010 Kelly Mott