📚 Topic Summary
A unit rate is a ratio that compares a quantity to one unit of another quantity. It tells you how much of something you get for one of something else. For example, if a 5-pound bag of apples costs $4.50, the unit rate is the cost per pound. To find it, you divide the total cost by the number of pounds: $$\frac{4.50}{5} = $0.90$$ per pound. Understanding unit rates helps you compare prices and make informed decisions.
Unit rates are useful in everyday life, from calculating gas mileage to determining the best deal on bulk items. By finding the unit rate, you can easily compare different options and choose the most efficient or cost-effective one.
🧮 Part A: Vocabulary
Match the term with its correct definition:
| Term |
Definition |
| 1. Ratio |
A. A comparison of two quantities with different units. |
| 2. Unit Rate |
B. A rate where the second quantity is one. |
| 3. Rate |
C. A comparison of two numbers by division. |
| 4. Proportion |
D. An equation stating that two ratios are equal. |
| 5. Equivalent Ratios |
E. Ratios that express the same relationship. |
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words: unit rate, one, compare, ratio, price.
A _______ is a comparison of two quantities. A _______ is a rate where the second term is _______. Knowing the _______ allows you to easily _______ different options based on ______.
🤔 Part C: Critical Thinking
Explain how you would use unit rates to determine which box of cereal is the better buy: a 10-ounce box for $3.00 or a 14-ounce box for $4.00?