1. Computing with Decimals

2. Adding and Subtracting Decimals

3. Line up the decimal points. 4.6 + 7.23

4. Line up the decimal points. 4.6 + 7.23 4.60 + 7.23

5. Fill in with zeros. 4.6 + 7.23 4.60 + 7.23

6. Fill in with zeros. 4.6 + 7.23 4.60 + 7.23

7. Add or subtract normally. 4.6 + 7.23 4.60 + 7.23

8. Add or subtract normally. 4.6 + 7.23 4.60 + 7.23 11 83

9. Place the decimal point under the other decimal points. 4.6 + 7.23 4.60 + 7.23 11 83

10. Place the decimal point under the other decimal points. 4.6 + 7.23 4.60 + 7.23 11.83

11. Line up the decimal points. 12 − 2.46

12. Line up the decimal points. 12 − 2.46 12 has a decimal point hidden behind it.

13. Line up the decimal points. 12 − 2.46 12.00 − 2.46

14. Fill in with zeros. 12 − 2.46 12.00 − 2.46

15. Fill in with zeros. 12 − 2.46 12.00 − 2.46

16. Add or subtract normally. 12 − 2.46 12.00 − 2.46

17. Add or subtract normally. 12 − 2.46 12.00 − 2.46 9 54

18. Place the decimal point under the other decimal points. 12 − 2.46 12.00 − 2.46 9 54

19. Place the decimal point under the other decimal points. 12 − 2.46 12.00 − 2.46 9.54

20. Line up the decimal points. 15.2 − 7.93

21. Line up the decimal points. 15.2 − 7.93 15.20 −7.93

22. Fill in with zeros. 15.2 − 7.93 15.20 −7.93

23. Fill in with zeros. 15.2 − 7.93 15.20 −7.93

24. Add or subtract normally 15.2 − 7.93 15.20 −7.93

25. Add or subtract normally 15.2 − 7.93 15.20 −7.93 7 27

26. Place the decimal point under the other decimal points. 15.2 − 7.93 15.20 −7.93 7 27

27. Place the decimal point under the other decimal points. 15.2 − 7.93 15.20 −7.93 7.27

28.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 24.5 – 13

29.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 16.8 + 4.72

30.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 143.2 + 4.18

31.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 35 – 4.5

32.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 2.14 + 8.4

33.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 9 – 3.65

34.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 4.02 + 0.75

35.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 8.4 – 2.13

36.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 5 + 0.52

37.  Line up the decimal points.  Fill in with zeros.  Add or subtract normally.  Place the decimal point under the other decimal points. 12 – 0.68

38. Multiplying Decimals

39. Remove any extra zeros. 0.54 x 1.20.54 x 1.2 0.064 x 2.09.064 x 2.09 340 x 0.50 340 x.5 4.03 x 6.304.03 x 6.3

40. Remove any extra zeros. 0.70 x 2.05.7 x 2.05 0.003 x 1.10.003 x 1.1 500 x 2.70 500 x 2.7 0.082 x 0.09.082 x 0.09

41. Find the number that has the most digits NOT INCLUDING zeros on the front..54 x 1.2 2 digits

42. Find the number that has the most digits NOT INCLUDING zeros on the front..064 x 2.09 2 digits3 digits

43. Find the number that has the most digits NOT INCLUDING zeros on the front. 340 x.5 3 digits1 digit

44. Find the number that has the most digits NOT INCLUDING zeros on the front. 4.03 x 6.3 3 digits2 digits

45. Find the number that has the most digits NOT INCLUDING zeros on the front..7 x 2.05 1 digit3 digits

46. Find the number that has the most digits NOT INCLUDING zeros on the front..003 x 1.1 1 digit2 digits

47. Find the number that has the most digits NOT INCLUDING zeros on the front. 500 x 2.7 3 digits2 digits

48. Remove any extra zeros. 0.47 x 0.2

49. Remove any extra zeros. 0.47 x 0.2

50. Find the number that has the most digits NOT INCLUDING zeros on the front. 0.47 x 0.2

51. Find the number that has the most digits NOT INCLUDING zeros on the front. 0.47 x 0.2 2 digits

52. Find the number that has the most digits NOT INCLUDING zeros on the front. 0.47 x 0.2 2 digits1 digit

53. Put that number on top lining up the right side of the problem. 0.47 x 0.2 2 digits1 digit

54. Put that number on top lining up the right side of the problem..4 7 x.2

55. Multiply normally..4 7 x.2

56. Multiply normally..4 7 x.2 9 4

57. Count the total number of decimal places in the problem..4 7 x.2 9 4

58. Count the total number of decimal places in the problem..4 7 x.2 9 4 2 decimal places

59. Count the total number of decimal places in the problem..4 7 x.2 9 4 2 decimal places +1 decimal place

60. Count the total number of decimal places in the problem..4 7 x.2 9 4 2 decimal places +1 decimal place 3 decimal places

61. Put that many decimal places in the answer..4 7 x.2 9 4 2 decimal places +1 decimal place 3 decimal places

62. Put that many decimal places in the answer..4 7 x.2 9 4 2 decimal places +1 decimal place 3 decimal places 1 decimal place

63. Put that many decimal places in the answer..4 7 x.2 9 4 2 decimal places +1 decimal place 3 decimal places 2 decimal places

64. Put that many decimal places in the answer..4 7 x.2.0 9 4 2 decimal places +1 decimal place 3 decimal places

65. Put that many decimal places in the answer..4 7 x.2.0 9 4

66. Remove any extra zeros. 3.45 x 0.004

67. Remove any extra zeros. 3.45 x 0.004

68. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.45 x 0.004

69. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.45 x 0.004 3 digits

70. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.45 x 0.004 3 digits1 digit

71. Put that number on top lining up the right side of the problem. 3.45 x 0.004 3 digits1 digit

72. Put that number on top lining up the right side of the problem. 3. 4 5 x. 0 0 4

73. Multiply normally. 3. 4 5 x. 0 0 4

74. Multiply normally. 3. 4 5 x. 0 0 4 1 3 8 0

75. Count the total number of decimal places in the problem. 3. 4 5 x. 0 0 4 1 3 8 0

76. Count the total number of decimal places in the problem. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places

77. Count the total number of decimal places in the problem. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal places

78. Count the total number of decimal places in the problem. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal places 5 decimal places

79. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal places 5 decimal places

80. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal places 5 decimal places 1 decimal place

81. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal places 5 decimal places 2 decimal places

82. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal place 5 decimal places 3 decimal places

83. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4 1 3 8 0 2 decimal places +3 decimal place 5 decimal places 4 decimal places

84. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4.0 1 3 8 0 2 decimal places +3 decimal place 5 decimal places

85. Put that many decimal places in the answer. 3. 4 5 x. 0 0 4. 0 1 3 8 0

86. Remove any extra zeros. 3.40 x 1.98

87. Remove any extra zeros. 3.40 x 1.98

88. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.40 x 1.98

89. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.40 x 1.98 2 digits

90. Find the number that has the most digits NOT INCLUDING zeros on the front. 3.40 x 1.98 2 digits3 digits

91. Put that number on top lining up the right side of the problem. 3.40 x 1.98 2 digits3 digits

92. Put that number on top lining up the right side of the problem. 1. 9 8 x 3. 4

93. Multiply normally. 1. 9 8 x 3. 4

94. Multiply normally. 1. 9 8 x 3. 4 7 9 2

95. Multiply normally. 1. 9 8 x 3. 4 7 9 2 5 9 4 0

96. Multiply normally. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2

97. Count the total number of decimal places in the problem. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2

98. Count the total number of decimal places in the problem. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places

99. Count the total number of decimal places in the problem. 1.9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places +1 decimal place

100. Count the total number of decimal places in the problem. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places +1 decimal place 3 decimal places

101. Put that many decimal places in the answer. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places +1 decimal place 3 decimal places

102. Put that many decimal places in the answer. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places +1 decimal place 3 decimal places 1 decimal place

103. Put that many decimal places in the answer. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6 6 3 2 2 decimal places +1 decimal place 3 decimal places 2 decimal places

104. Put that many decimal places in the answer. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6.6 3 2 2 decimal places +1 decimal place 3 decimal places

105. Put that many decimal places in the answer. 1. 9 8 x 3. 4 7 9 2 5 9 4 0 6.6 3 2

106.  Remove any extra zeros.  Find the number that has the most digits NOT INCLUDING zeros on the front.  Put that number on top lining up the right side of the problem.  Multiply normally.  Count the total decimal places in the problem.  Put that many decimal places in the answer.