Percentage

Definition Percent can be defined as “of one hundred.” of 100

Definition “Cent” comes from the Latin and means 100. Many words have come from the root cent such as century, centimeter, centipede, & cent.

Definition CCC means three hundred. The letter C in Roman Numerals stands for 100 or “cent”. CCC means three hundred.

Percent and Money If you understand money, learning We write our change from a dollar in hundredths. If you understand money, learning percents is a breeze.

Comparing Money & Percents $ .50 is ½ of a dollar 50% also means ½ $1.00 50¢ = 50¢

Comparing Money & Percents 50% means ½ 50% of 6 stars is 3 stars 50% of =

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

50 parts out of 100 or 50 hundredths. 50 % Means 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

Comparing Money & Percents $ .25 is ¼ of a dollar 25% also means ¼ $1.00 25¢ =

Comparing Money & Percents 25% means ¼ 25% of 8 lemons is 2 lemons = 25% of

Comparing Money & Percents Fraction Simplified Percent Decimal Fraction 25% .25 25 100 1 4 = = =

25 parts out of 100 or 25 hundredths. 25 % Means 25 parts out of 100 or 25 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

Comparing Money & Percents $ .10 is 1/10 of a dollar 10% also means 1/10 10¢ $1.00 =

Comparing Money & Percents 10% means 1/10 10% of 10 ice creams is 1 ice cream = 10% of

Comparing Money & Percents Fraction Simplified Percent Decimal Fraction 10% .10 10 100 1 10 = = =

10 parts out of 100 or 10 hundredths. 10 % Means 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

20 parts out of 100 or 20 hundredths. 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

Percents Have Equivalents in Decimals and Fractions Simplified Percent Decimal Fraction 20% .20 20 100 1 5 = = =

How to Find the Percent of a Whole Number The first thing to remember is “of” means multiply in mathematics. of x =

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

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

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

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

What is the percent of this number? . 20 % of 820 . x 820 x . 20 000 +1640 . 16400

What is the percent of this number? . x 40 % of 725 . 1 2 725 x . 40 000 +2900 . 29000

What is the percent of this number? . x 60 % of 692 . 5 1 692 x . 60 000 +4152 . 21520