5.NBT.7: Adding and Subtracting Decimals

I can add, subtract, multiply, and divide decimals to hundredths.

Problem 1

A recipe calls for 2.75 cups of flour, 1.5 cups of sugar, and 0.25 cups of salt. How many cups of dry ingredients are needed total?
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Problem 2

Sarah had $45.67. She spent $18.89 on lunch and $12.45 on a book. How much money does she have left?
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Problem 3

Create a word problem involving decimal addition and subtraction that requires multiple steps.
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Problem 4

Explain why lining up decimal points is crucial when adding and subtracting decimals.
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Problem 5

A runner completes a race in 12.45 seconds. If the record is 11.78 seconds, by how much did the runner miss the record?
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Problem 6

Design a real-world scenario where precise decimal calculations are important.
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Problem 7

If you add 23.456 + 67.89, explain each step of the process and why it works.
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Problem 8

Compare adding decimals to adding whole numbers. What's the same and what's different?
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Problem 9

Create a problem where the answer requires regrouping across multiple decimal places.
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Problem 10

Analyze common mistakes students make when working with decimal operations.
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