Copyright © 2000 by Monica Yuskaitis Revised by Frankie Welch 2012.
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Transcript of Copyright © 2000 by Monica Yuskaitis Revised by Frankie Welch 2012.
![Page 1: Copyright © 2000 by Monica Yuskaitis Revised by Frankie Welch 2012.](https://reader033.fdocuments.in/reader033/viewer/2022042718/5697c0141a28abf838ccd534/html5/thumbnails/1.jpg)
Copyright © 2000 by Monica Yuskaitis Revised by Frankie Welch 2012
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Percent can be defined as “of one hundred.”
Copyright © 2000 by Monica Yuskaitis
100of
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“Cent” comes from the Latin and means 100.
Copyright © 2000 by Monica Yuskaitis
Many words have come from the root cent such as century, centimeter,centipede, & cent.
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The letter C in Roman Numerals
stands for 100 or “cent”.
Copyright © 2000 by Monica Yuskaitis
CCC means threehundred.
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We write our change from a dollar in hundredths.
Copyright © 2000 by Monica Yuskaitis
If you understandmoney, learning percents is a breeze.
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$ .50 is ½ of a dollar 50% also means ½
Copyright © 2000 by Monica Yuskaitis
50¢
50¢
=$1.00
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50% means ½ 50% of 6 stars is 3 stars
Copyright © 2000 by Monica Yuskaitis
=50% of
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Copyright © 2000 by Monica Yuskaitis
50% .5050100
12= = =
Decimal FractionFraction
SimplifiedPercent
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Copyright © 2000 by Monica Yuskaitis
50 parts out of 100 or 50 hundredths.1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
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$ .10 is 1/10 of a dollar 10% also means 1/10
Copyright © 2000 by Monica Yuskaitis
=$1.00
10¢
10¢
10¢
10¢
10¢
10¢
10¢
10¢
10¢
10¢
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10% means 1/10 10% of 10 ice creams is 1 ice cream
Copyright © 2000 by Monica Yuskaitis
=10% of
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Copyright © 2000 by Monica Yuskaitis
10% .1010100
110= = =
Decimal FractionFraction
SimplifiedPercent
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Copyright © 2000 by Monica Yuskaitis
10 parts out of 100 or 10 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
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.50 = 50% = 50/100 = ½ . 25 = .10 = .75 = .05 =
Now let’s see why..
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40% = 40 = 2 100 5
35% = ___ = ___
35 7
100 20
Do these:24%79%98%Can you do this one?103%
Write a few for your seat
neighbor and exchange.
To go from percent to fractions, all you do is put the percent over 100! Then simplify.
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Method One Multiply denominator by whatever it
takes to get to 100. (equivalent fractions)
Do the same to the numerator. 4 x 20 = 80 = 80% 5 x 20 100
Do this one: 1 x _____ = _____ = _____% 4 x 100
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Method Two Divide the denominator into the numerator to
turn it into a decimal.
4 5 __ 0. 8___ fractions to perrrcents 5 l 4 . 0 move decimal
two - 4 0 times to the
rrrright! _____ = 80%
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75% = .75 38% = .38
Do this one: 67% = ______
To change from percent to decimalllll just move the decimal two times to the lllleft.
You can also divide the percent by 100.
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FractionsDecimalsPercents
1/5 = .20 = 20%
Copyright © 2000 by Monica Yuskaitis