1. Everyday Math Grade 4 – Lesson 2.9 Subtraction of Multidigit Numbers Copyright © 2010 Kelly Mott

2. Math Boxes Lesson 2.9 Page 49

3. Copyright © 2010 Kelly Mott Math Box 1:

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8. Copyright © 2010 Kelly Mott REVIEW

9. Copyright © 2010 Kelly Mott Name Collection Box 15

10. What number is in the ten’s place? ____________________________ hundred thousand’s place? ________________ ten million’s place? ______________________ thousand’s place? _______________________ Place Value Practice 1 8746 9 3521

11. What number is in the hundred’s place? ________________________ hundred million’s place? __________________ ten thousand’s place? ____________________ million’s place? _________________________ Place Value Practice 2 8746 9 3521

12. Value of a Number Practice 1 Problem #1: 280, 763, 741 What is the 8 worth? ___________________________ Problem#2: 856, 742, 125 What is the 1 worth? ___________________________ Problem#3: 260, 958, 403 What is the 9 worth? ___________________________ Copyright © 2010 Kelly Mott

13. Expanded Form Practice 1 Problem 1: 286,051,873 __________________ + __________________ + __________________ + __________________ Copyright © 2010 Kelly Mott

14. 1.What is the maximum? _________________________________________________________ 2.What is the minimum? _________________________________________________________ 3. What is the range (maximum – minimum)? _________________________________________________________ 4. What is the mode (most frequent) ? _________________________________________________________ 5. What is the median (middle number)? _________________________________________________________ Copyright © 2010 Kelly Mott LOOK AT THE DATA: 2 4 4 7 7 7 8 10 14

15. Copyright © 2010 Kelly Mott Lesson 2.9 Three Digit Subtraction

16. Copyright © 2010 Kelly Mott PART 1: BORROWING FROM THE TENS

17. 1.When we subtract, we start with the ones column. 2.1-6…can’t be done…so we have to borrow from the tens: TensOnes Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 231 - 116 __________________

18. 1.When we subtract, we start with the ones column. 2.4-8…can’t be done…so we have to borrow from the tens: TensOnes Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 864 - 428 __________________

19. 1.When we subtract, we start with the ones column. 2.5-6…can’t be done…so we have to borrow from the tens: TensOnes Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 935 - 526 __________________

20. 1.When we subtract, we start with the ones column. 2.7-9…can’t be done…so we have to borrow from the tens: TensOnes Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 647 - 229 __________________

21. 1.When we subtract, we start with the ones column. 2.1-6…can’t be done…so we have to borrow from the tens: TensOnes Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 273 - 118 __________________

22. Does this make sense? Copyright © 2010 Kelly Mott

23. Practice Problems Copyright © 2010 Kelly Mott

24. Practice 1: Regrouping Tens to Ones 461 248 254 125 A.B. Copyright © 2010 Kelly Mott --

25. Practice 2: Regrouping Tens to Ones 396 147 822 715 C.D. Copyright © 2010 Kelly Mott --

26. Practice 3: Regrouping Tens to Ones 568 239 781 364 E.F. Copyright © 2010 Kelly Mott --

27. Practice 4: Regrouping Tens to Ones 426 218 525 157 G.H. Copyright © 2010 Kelly Mott --

29. Does this make sense? Copyright © 2010 Kelly Mott

30. PART 2: BORROWING FROM THE HUNDREDS

31. 1.When we subtract, we start with the ones column. 2.4 tens - 6 tens…can’t be done …so we have to borrow from the hundreds: _Hundreds_ _Tens_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 343 - 161 __________________

32. 1.When we subtract, we start with the ones column. 2.5 tens - 8 tens…can’t be done …so we have to borrow from the hundreds: _Hundreds_ _Tens_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 259 - 182 __________________

33. 1.When we subtract, we start with the ones column. 2.5 tens - 9 tens…can’t be done …so we have to borrow from the hundreds: _Hundreds_ _Tens_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 458 - 295 __________________

34. 1.When we subtract, we start with the ones column. 2.8 tens - 9 tens…can’t be done …so we have to borrow from the hundreds: _Hundreds_ _Tens_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 286 - 196 __________________

35. 1.When we subtract, we start with the ones column. 2.2 tens - 9 tens…can’t be done …so we have to borrow from the hundreds: _Hundreds_ _Tens_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 423 - 390 __________________

36. Does this make sense? Copyright © 2010 Kelly Mott

37. Practice Problems Copyright © 2010 Kelly Mott

38. Practice 1: Regrouping Hundreds to Tens 922 551 226 131 A.B. Copyright © 2010 Kelly Mott --

39. Practice 2: Regrouping Hundreds to Tens 443 290 552 471 C.D. Copyright © 2010 Kelly Mott --

40. Practice 3: Regrouping Hundreds to Tens 239 143 928 846 E.F. Copyright © 2010 Kelly Mott --

41. Practice 4: Regrouping Hundreds to Tens 367 184 485 391 G.H. Copyright © 2010 Kelly Mott --

43. How did you do? Copyright © 2010 Kelly Mott

44. PART 3: BORROWING MORE THAN ONCE

45. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 343 - 164 __________________

46. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 422 - 265 __________________

47. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 536 - 258 __________________

48. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 658 - 199 __________________

49. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 345 - 186 __________________

50. Does this make sense? Copyright © 2010 Kelly Mott

51. Practice Problems Copyright © 2010 Kelly Mott

52. Practice 1: Regrouping More Than Once 951 273 613 464 A.B. Copyright © 2010 Kelly Mott --

53. Practice 2: Regrouping More Than Once 766 689 474 397 C.D. Copyright © 2010 Kelly Mott --

54. Practice 3: Regrouping More Than Once 856 368 323 178 E.F. Copyright © 2010 Kelly Mott --

55. Practice 4: Regrouping More Than Once 578 289 426 397 G.H. Copyright © 2010 Kelly Mott --

57. How did you do? Copyright © 2010 Kelly Mott

58. PART 4: SUBTRACTION WITH ZEROS

59. Zero in the Ones Copyright © 2010 Kelly Mott

60. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 680 - 343 __________________

61. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 390 - 132 __________________

62. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 450 - 307 __________________

63. Practice 1: Zero in the Ones 880 333 560 252 A.B. Copyright © 2010 Kelly Mott --

64. Practice 2: Zero in the Ones 620 419 270 101 C.D. Copyright © 2010 Kelly Mott --

65. Zero in the Hundreds Copyright © 2010 Kelly Mott

66. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 305 - 234 __________________

67. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 703 - 451 __________________

68. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 408 - 277 __________________

69. Practice 1: Zero in the Tens 903 621 502 260 A.B. Copyright © 2010 Kelly Mott --

70. Practice 2: Zero in the Tens 209 171 606 495 C.D. Copyright © 2010 Kelly Mott --

71. More than 1 Zero Copyright © 2010 Kelly Mott

72. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 500 - 235 __________________

73. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 300 - 152 __________________

74. 1.When we subtract, we start with the ones column. 2._Hundreds_ _Tens_ _Ones_ Copyright © 2010 Kelly Mott Understanding Regrouping in Subtraction 600 - 339 __________________

75. Practice 1: More than 1 Zero 700 553 600 464 A.B. Copyright © 2010 Kelly Mott --

76. Practice 2: More than 1 Zero 800 452 300 185 C.D. Copyright © 2010 Kelly Mott --

77. PAM Problems Copyright © 2010 Kelly Mott

78. 1. A soccer league needed to sell 650 candles to raise enough money for new uniforms. The players already sold 315 candles. How many more do they need to sell? Question:Steps: Solve:Answer in Words: Copyright © 2010 Kelly Mott

79. 2. Sadie drove to the beach. When she started her trip the car showed 672 miles. When she returned, she read 708 miles. How many miles did she travel? Question:Steps: Solve:Answer in Words: Copyright © 2010 Kelly Mott

80. 3. Maria had $4.56. She earned $3.50 more. How much money does she have in all? Question:Steps: Solve:Answer in Words: Copyright © 2010 Kelly Mott

81. 4. The pilot flew 2,859 miles in a week. The following week he flew 1,042 miles. How many miles did he fly in all? Question:Steps: Solve:Answer in Words: Copyright © 2010 Kelly Mott

83. How did you do? Copyright © 2010 Kelly Mott

85. Does this make sense? Copyright © 2010 Kelly Mott

86. HOMEWORK Everyday Math Journal Page: 46- 47 Copyright © 20010Kelly Mott

93. Copyright © 2010 Kelly Mott