Objectives Example 1 Example 2 Quick Quiz To
Objectives Example 1 Example 2 Quick Quiz
• To recognize percents as ratios with a common scale of 100 • To recognize percents as a convenient way to compare ratios • To solve percent exercises using proportions
Find 8% of 125. Method 1 Write the percent as a fraction. Using a Percent Model
Method 2 Write the percent as a decimal. Answer: So, 8% of 125 is 10.
Find 72% of 350. A. 116 B. 252 C. 308 D. 335 1. 2. 3. 4. A B C D
BREAKFAST Sally read the nutrition facts on a box of her favorite cereal. Each cup of the cereal provides 7% of the recommended daily value of potassium. If a cup of cereal contains 260 milligrams of potassium, what is the recommended daily value of potassium? You know that 260 milligrams is 7% of the recommended daily value. So, the problem asks 260 is 7% of what number? Thus, you need to find the whole.
Write the proportion. Find the cross products. Simplify. Divide each side by 7. Answer: So, the recommended daily value of potassium is 3, 714 mg.
FUNDRAISER The students at Greenview Middle School have raised $250 so far in their annual fund raiser. This amount represents 5% of their goal. What is the fund raising goal for the students at Greenview Middle School? A. $500 B. $1, 250 C. $3, 500 D. $5, 000 1. 2. 3. 4. A B C D
Manny finished 9 of the 15 homework exercises assigned. What percentage of the homework has Manny finished? A. 60% B. 6% C. 66% D. 1. 6% 1. 2. 3. 4. A B C D
Joanna collects stamps and recently increased her stamp collection by 10%. Before the increase, Joanna had 1, 369 stamps. How many does she have now? A. 137 stamps B. 1, 506 stamps C. 1. 232 stamps D. 1, 300 stamps 1. 2. 3. 4. A B C D
Jong wanted to purchase a new pair of rollerblades. The pair he wanted sold for $79 and all rollerblades were currently on sale for a 20% discount. How much will the rollerblades cost? A. $71. 10 B. $55. 20 C. $63. 20 D. $62. 10 1. 2. 3. 4. A B C D
Image Bank Math Tools Multilingual e-Glossary Using a Percent Model Solving Proportions Similar Triangles
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