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Subtracting Fractions Warm Up

Last updated over 4 years ago
10 questions
Note from the author:
Review subtracting fractions with students.

Based on your Exit Ticket Feedback from yesterday, I wanted to include some more subtraction with fractions practice for today before we review working with decimals.

Remember, when you have a double negative, you MUST make the term into ADDITION and eliminate BOTH negative signs!
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Mrs. Smith wants to bake a cake for the teachers in her school. She found a recipe that calls for ¾ cup of cocoa to make an 8 serving cake. However, she needs to make a cake that serves FOUR TIMES as many people. She also wants to add a little extra cocoa to make the cake extra chocolate-licious, so she decided to add another ⅜ of a cup of cocoa. Write a number sentence to help her determine the amount of cocoa she needs. Remember, a number sentence does NOT include the solution (or an equal sign).

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Mrs. Smith wants to bake a cake for the teachers in her school. She found a recipe that calls for ¾ cup of cocoa to make an 8 serving cake. However, she needs to make a cake that serves FOUR TIMES as many people. She also wants to add a little extra cocoa to make the cake extra chocolate-licious, so she decided to add another ⅜ of a cup of cocoa. Using the number sentence you wrote in problem 9, SOLVE to determine how much cocoa Mrs. Smith needs to bake the cake. Do NOT label your answer.