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Today we will interpret percent as a part of a hundred.

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Presentation on theme: "Today we will interpret percent as a part of a hundred."— Presentation transcript:

1 Today we will interpret percent as a part of a hundred.
interpret – figure out; understand percent – per one hundred (100) Concept

2 When you take a test your score is shown as a percent
When you take a test your score is shown as a percent. For example, lets say you take a math test that has 100 questions on it. If you score 70 correct, your percentage would be 70 %. APK

3 Percent Percent means per hundred. It is another way of saying, “out of one hundred.”

4 Definition “Cent” is a Latin root word which means 100.
Many words have come from the root cent such as: century centimeter centipede cent

5 One hundred 100

6

7 100 cubes using base 10 blocks.

8 100 pennies = $1.00

9

10 Lets compare money & percents
$ .50 is ½ of a dollar 50% means ½ $1.00 50¢ 50¢ = +

11 50% .50 50 100 1 2 = = = Money & Percents Fraction Simplified Percent
Decimal Fraction 50% .50 50 100 1 2 = = =

12 50 % 50 parts out of 100 or 50 hundredths. 1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 50 %

13 100 books! I have read 95 books out of my 100-book- collection. 95 %

14 100 cubes x 10 = ?

15 10 20 out of 100 = 20% 10 CD

16 10 40 out of 100 = 40% 10 CD

17 10 50 out of 100 = 50% 10 CD

18 10 out of 100 units are shaded blue.
= 10 % CD

19 30 out of 100 units are shaded blue.
= 30 % CD

20 80 out of 100 units are shaded blue.
= 90 % CD

21 Why is understanding percent important?
You will know the relationship between any number and 100 as a percent. You will know how a percent translates into fractions. You will understand how percentage relates to decimals, money; quantities.

22 Percentage? If 24 out of 100 units are shaded blue. What is the = __ %
_24_ 100 = __ % What is the Percentage? CD

23 Percentage? If 32 out of 100 units are shaded blue. What is the = __ %
_32_ 100 = __ % What is the Percentage? CD

24 Percentage? If 16 out of 100 units are shaded blue. What is the = __ %
_16_ 100 = __ % What is the Percentage? CD

25 what is 55 % of 100? 55

26 what is 75 % of 100? 75

27 what is 45 % of 100? 45

28 what is 100 % of 100? 100 100 = 1 x 100

29 100 cubes using base 10 blocks.
1 x 100

30 $134.23 hundredths What place value is the three?
Decimal numbers are numbers with a value less than one.

31 Changing a percent into a decimal.
45 % = 0 45 per hundred hundredths This is how these numbers are related.


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