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Today we will compute a given percent of a whole number. compute – figure Today we will compute a given percent of a whole number. compute – figure out

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

Think of the last time you went to the store to buy an item. Think of the last time you went to the store to buy an item. Every time you buy something you must pay a sales tax on the product. In order to find out how much sales tax you will pay you must find the percent of a number.

Money & Percents Percent Fraction Decimal 50 = 50% = 100. 50 Money & Percents Percent Fraction Decimal 50 = 50% = 100. 50

Why is computing a given percent of a whole number important? • You will Why is computing a given percent of a whole number important? • You will know exactly how much you will pay when you buy something. • You will be prepared for tests like the CST. • Are there other reasons why?

Find 25% of 78 25 %. 1 2 43 0 . 0. 2 5 Find 25% of 78 25 %. 1 2 43 0 . 0. 2 5 x 78 2 0 0 +1 7 5 0 1 9 5 0 19. 50 . 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place. CD

Find 3% of 20 0 0 3 %. . 0. 0 3 x 20 Find 3% of 20 0 0 3 %. . 0. 0 3 x 20 0. 60 0 +0 0 6 0 . 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place. CD

Steps 1. Change the percent to a decimal. 2. Add a zero in front Steps 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place

Let’s try them together! 1. Change the percent to a decimal. 2. Add a Let’s try them together! 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place. 1. Find the 5% of 40 0. 05 x 40 + 2. 0 000 0200 0 20 0 .

Let’s try them together! 1. Change the percent to a decimal. 2. Add a Let’s try them together! 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place. 1. Find the 88% of 40 0. 88 x 40 + 35. 20 000 3520 3 52 0 .

Let’s try them together! 1. Change the percent to a decimal. 2. Add a Let’s try them together! 1. Change the percent to a decimal. 2. Add a zero in front of the decimal 3. Multiply the decimal with the whole number. 4. Place the decimal in the right place. 1. Find the 65% of 250 162. 50 0. 65 x 250 000 + 3250 13000 16 25 0 .

Lets review What is percent? What does compute mean? What is a decimal? What Lets review What is percent? What does compute mean? What is a decimal? What is a fraction?