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Percentage increase and decrease

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Presentation on theme: "Percentage increase and decrease"— Presentation transcript:

1 Percentage increase and decrease
Percentage Quizzes Fractions to % Decimals to % Multipliers Percentage of amounts 1 Percentage of amounts 2 Percentage increase and decrease Reverse Percentages

2 Decimals to Percentages
10 multiple choice questions

3 Convert this decimal to a percentage
0.1 1% 100% A) B) 10% 0.1% C) D)

4 Convert this decimal to a percentage
0.10 100% 10% A) B) 0.1% 1% C) D)

5 0.35 A) B) C) D) Convert this decimal to a percentage 35% 0.35% 3.5%
350% C) D)

6 Convert this decimal to a percentage
0.01 0.1% 100% A) B) 10% 1% C) D)

7 0.17 A) B) C) D) Convert this decimal to a percentage 0.17% 1.7% 170%

8 2.4 A) B) C) D) Convert this decimal to a percentage 0.24% 2.4% 24%
240% C) D)

9 0.045 A) B) C) D) Convert this decimal to a percentage 450% 4.5% 0.45%

10 0.053 A) B) C) D) Convert this decimal to a percentage 0.53% 53% 5.3%
530% C) D)

11 0.175 A) B) C) D) Convert this decimal to a percentage 17.5% 1750%
175% 1.75% C) D)

12 3.14 A) B) C) D) Convert this decimal to a percentage 31.4% 314%
0.314% 3.14% C) D)

13 END HOME

14 Fractions to Percentages
10 multiple choice questions

15 Convert this fraction to a percentage
12 20% 100% A) B) 50% 40% C) D)

16 Convert this fraction to a percentage
14 40% 25% A) B) 4% 2% C) D)

17 Convert this fraction to a percentage
1 10 10% 100% A) B) 1% 20% C) D)

18 Convert this fraction to a percentage
15 2% 15% A) B) 5% 20% C) D)

19 Convert this fraction to a percentage
34 80% 12% A) B) 45% 75% C) D)

20 21 100 A) B) C) D) Convert this fraction to a percentage 0.21% 2.1%
210% 21% C) D)

21 Convert this fraction to a percentage
4 10 4% 40% A) B) 44% 10% C) D)

22 Convert this fraction to a percentage
35 6% 15% A) B) 60% 80% C) D)

23 1 100 A) B) C) D) Convert this fraction to a percentage 100% 1% 0.1%
0.110% C) D)

24 13 A) B) C) D) Convert this fraction to a percentage 33.333333.. % 13%
11% C) D)

25 END HOME

26 Percentage Increase and Decrease Multipliers
10 multiple choice questions

27 A) B) C) D) What multiplier would you use to.... INCREASE by 10% 1.1
0.10 A) B) 1.9 0.9 C) D)

28 A) B) C) D) What multiplier would you use to.... INCREASE by 20% 0.2
1.2 A) B) 20 0.8 C) D)

29 A) B) C) D) What multiplier would you use to.... INCREASE by 65% 16.5
0.165 A) B) 1.65 0.65 C) D)

30 A) B) C) D) What multiplier would you use to.... INCREASE by 13% 0.113
0.13 A) B) 0.013 1.13 C) D)

31 A) B) C) D) What multiplier would you use to.... INCREASE by 2% 0.02
1.2 A) B) 0.2 1.02 C) D)

32 A) B) C) D) What multiplier would you use to.... DECREASE by 10% 0.1
1.1 A) B) 1.9 0.9 C) D)

33 A) B) C) D) What multiplier would you use to.... DECREASE by 20% 1.2
0.8 A) B) 0.20 0.08 C) D)

34 A) B) C) D) What multiplier would you use to.... DECREASE by 15% 0.15
1.15 A) B) 0.85 1.15 C) D)

35 A) B) C) D) What multiplier would you use to.... DECREASE by 5% 0.95
0.05 A) B) 0.095 1.05 C) D)

36 A) B) C) D) What multiplier would you use to.... DECREASE by 22% 0.88
0.78 A) B) 0.22 1.22 C) D)

37 END HOME

38 Multipliers- Finding % with a Calculator
10 multiple choice questions

39 What multiplier do you need to find.......
50% 0.2 2 A) B) 5 0.5 C) D)

40 10% A) B) C) D) What multiplier do you need to find....... 1 0.01 0.1
1.0 C) D)

41 20% A) B) C) D) What multiplier do you need to find....... 2.0 1.2 0.5
0.2 C) D)

42 25% A) B) C) D) What multiplier do you need to find....... 0.4 0.25
2.5 0.025 C) D)

43 65% A) B) C) D) What multiplier do you need to find....... 0.65 6.5 65
0.065 C) D)

44 2% A) B) C) D) What multiplier do you need to find....... 2 0.2 0.002
0.02 C) D)

45 6% A) B) C) D) What multiplier do you need to find....... 0.006 0.06 6
0.6 C) D)

46 1.5% A) B) C) D) What multiplier do you need to find....... 1.5 0.015
0.15 C) D)

47 150% A) B) C) D) What multiplier do you need to find....... 1.5 0.150
15.0 0.15 C) D)

48 230% A) B) C) D) What multiplier do you need to find....... 0.230 23.0
2.3 0.023 C) D)

49 END HOME

50 10 multiple choice questions
Percentage of Amounts 1 10 multiple choice questions

51 Find.... 50 % of 20 5 20 A) B) 10 2 C) D)

52 Find.... 50 % of 50 20 25 A) B) 50 30 C) D)

53 Find.... 10 % of 30 15 10 A) B) 5 3 C) D)

54 Find.... 10 % of 80 8 20 A) B) 40 0.8 C) D)

55 Find.... 25 % of 20 4 10 A) B) 2 5 C) D)

56 Find.... 25 % of 60 6 15 A) B) 7.5 20 C) D)

57 Find.... 1 % of 100 0.1 1 A) B) 0.01 10 C) D)

58 Find.... 1 % of 400 0.4 40 A) B) 0.04 4 C) D)

59 Find.... 1 % of 50 5 50 A) B) 0.5 0.05 C) D)

60 Find.... 20 % of 30 6 12 A) B) 8 3 C) D)

61 END HOME

62 10 multiple choice questions
Percentage of Amounts 2 10 multiple choice questions

63 Find.... 20 % of 40 4 12 A) B) 8 20 C) D)

64 Find.... 5 % of 80 0.8 8 A) B) 10 4 C) D)

65 Find.... 15 % of 80 16 12 A) B) 8 4 C) D)

66 Find.... 35 % of 120 52 40 A) B) 36 42 C) D)

67 Find.... 55 % of 140 70 77 A) B) 110 64 C) D)

68 Find.... 75 % of 180 160 135 A) B) 150 90 C) D)

69 Find.... 10 % of 40 2 8 A) B) 4 1 C) D)

70 Find.... 5 % of 40 2 10 A) B) 4 6 C) D)

71 Find.... 2.5 % of 40 5 2.5 A) B) 4 1 C) D)

72 Find.... 17.5 % of 40 7 8 A) B) 7.5 6 C) D)

73 END HOME

74 10 multiple choice questions
Reverse Percentage 10 multiple choice questions

75 How would you find the original price after..
Increase of 10% X 1.1 ÷ 0.1 A) B) ÷ 1.1 X 0.1 C) D)

76 How would you find the original price after..
Increase of 30% ÷ 0.3 ÷ 1.3 A) B) X 0.3 X 0.7 C) D)

77 How would you find the original price after..
Increase of 15% ÷ 0.85 X 0.85 A) B) X 0.15 ÷ 1.15 C) D)

78 How would you find the original price after..
Increase of 5% ÷ 1.05 ÷ 0.05 A) B) X 1.05 X 0.05 C) D)

79 How would you find the original price after..
Increase of 17.5% X 1.175 ÷ 0.175 A) B) X 0.175 ÷ 1.175 C) D)

80 How would you find the original price after..
Decrease of 10% ÷ 0.9 X 0.9 A) B) X 0.1 ÷ 0.1 C) D)

81 How would you find the original price after..
Decrease of 13% X 0.13 ÷ 0.87 A) B) ÷ 1.13 X 0.87 C) D)

82 How would you find the original price after..
Decrease of 35% X 1.35 ÷ 0.65 A) B) ÷ 1.35 ÷ 0.35 C) D)

83 How would you find the original price after..
Decrease of 99% ÷ 0.99 ÷ 0.1 A) B) X 0.01 ÷ 0.01 C) D)

84 How would you find the original price after..
Decrease of 99.5% ÷ 0.05 ÷ 0.015 A) B) ÷ 0.005 ÷ 0.995 C) D)

85 END HOME


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