Percent II

Copyright © 2000 by Monica Yuskaitis Definition Percent can be defined as “of one hundred.” of 100 Copyright © 2000 by Monica Yuskaitis

20 % Means 20 parts out of 100 or 20 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 Copyright © 2000 by Monica Yuskaitis

Percents Have Equivalents in Decimals and Fractions Simplified Percent Decimal Fraction 20% .20 20 100 1 5 = = = Copyright © 2000 by Monica Yuskaitis

How to Find the Percent of a Whole Number The first thing to remember is “of” means multiply in mathematics. of x = Copyright © 2000 by Monica Yuskaitis

How to Find the Percent of a Whole Number Step 1 - When you see a percent problem you know when you read “of” in the problem you multiply. x 25% of 200 Copyright © 2000 by Monica Yuskaitis

How to Find the Percent of a Whole Number Step 2 – Change your percent to a decimal and then move it two places to the left. . . 25% x 200 Copyright © 2000 by Monica Yuskaitis

How to Find the Percent of a Whole Number Step 3 – Multiply just like a regular decimal multiplication problem. 200 x . 25 1000 +400 5000 Copyright © 2000 by Monica Yuskaitis

How to Find the Percent of a Whole Number Step 4 – Place the decimal point 2 places to the left in your answer. 200 x . 25 1000 +400 . 5000 Copyright © 2000 by Monica Yuskaitis

What is the percent of this number? . 20 % of 820 . x 820 x . 20 000 +1640 . 16400 Copyright © 2000 by Monica Yuskaitis

What is the percent of this number? . x 40 % of 725 . 1 2 725 x . 40 000 +2900 . 29000 Copyright © 2000 by Monica Yuskaitis

What is the percent of this number? . x 60 % of 692 . 5 1 692 x . 60 000 +4152 . 21520 Copyright © 2000 by Monica Yuskaitis