January 14, 2010 Math 201 OBJECTIVE: Students will be able to compute the percent of a total and discounts AIM: How do we find the percent of a.

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January 14, 2010 Math 201 OBJECTIVE: Students will be able to compute the percent of a total and discounts AIM: How do we find the percent of a number? STANDARDS: 6.N.12 PRIOR KNOWLEDGE: Change to a decimal equivalent 30% 15% 1/2

MINI LESSON: When we find the percent of a number, we change the percent to a decimal and multiply by the base, or whole amount Example: What is 12% of 200 Step 1 Change the percent to a decimal .12 Step 2 Change “of” to multiplication X Step 3 Multiply by the base, or whole amount 200 .12 X 200 = ?

Example: A flat screen Sony Bravia is on sale for 30% off the regular price. The regular price is $900. What is the sale price of the TV? Step 1 Change the percent to a decimal Step 2 Multiply to find the amount of the discount Step 3 Subtract the amount of discount from the regular price The sale price of the TV is

What is 80% of 40?

UGGs boots are on sale for 25% off the regular price UGGs boots are on sale for 25% off the regular price. The regular price is $120. What is the sale price of the boots?

The principal told me that about 5% of the 620 students in our middle school are absent every day. How many students is that?

Terence received a $90 check for his birthday Terence received a $90 check for his birthday. If he deposits the check in his savings account, he will earn 5% interest on his deposit. How much interest will Terence earn this year on the amount of the check?

INDEPENDENT WORK: What is: 15% of 75? 10% of 90? 40% of 70? Ed Hardy jeans are on sale for 25% off the regular price. The regular price is $80. What is the sale price of the jeans?

HOMEWORK: What is: 3% of 4000 12% of 300 8% of 60 The new Usher CD is 20% off the regular price. The regular price is $15.99. What is the sale price of the CD?