Lesson 2- Identifying and writing equivalent ratios. Write the missing number that will make the ratios equivalent. 1. 2/ 3 , 12/ N 2. 12:15 = 4 : N 3. 3/9 = N / 18 4. 5: N = 15 : 21 5. 20:30 = 2 : N
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Angie wants to bake cookies for the bake sale. She looks at recipes for sugar cookies. Most of the recipes say to use 3 cups of flour, 1 cup of butter, 1 cup of sugar, and some other stuff. She goes to the store to buy flour and butter. What is the ratio of flour to butter in one batch of sugar cookies? If she wants to make 3 batches of cookies, how much flour and butter will she need?
In this concept, you will learn how to write ratios and find equivalent ratios.
Writing Ratios and Finding Equivalent Ratios
A ratio is a comparison of two quantities by division. Ratios describe a part-to-part comparison or a part-to-whole comparison. Ratios are written three ways: as a fraction, with a colon, and with the word “to.” The ratio for quantity a to quantity b is:
ab a:ba to b
Step-by-step explanation:
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