Ratio, Rates
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Vocabulary:
Rate
Rate is a special ratio that compares two quantities. Often uses units such as miles, gallons or dollars to describe the rate.
Unit Rate
Unit Rate a unit rate compares a quantity to one. Rates can be simplified to be unit rates.
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The total bagel sales at a bagel shop for Monday is in the table below. |
A ratio is a way to compare two numbers. Ratios can be written in three ways.
We always reduce ratios just like fractions. When two or more ratios reduce to the same ratio they are called equivalent ratios. For example, 50:250 and 2:10 are equivalent ratios because they both reduce to 1:5. One common use of ratios is as a way to convert measurements. EXAMPLE A There are 14 girls and 18 boys in your math class. What is the ratio of girls to boys? Remember that order matters. The question asked for the ratio of girls to boys. The ratio would be 14:18. This can be simplified to 7:9. |
1. What is the ratio of cinnamon raisin bagels to plain bagels?
2. What is the ratio of honey wheat bagels to total bagels sold? 3. What is the ratio of cinnamon raisin bagels to sesame bagels to jalapeno cheddar bagels? PracticeThe votes for president in a club election were:
Smith: 24 Munoz: 32 Park: 20 Find the following ratios and write in simplest form.
Use the picture to write the following ratios for questions 2-6.
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