Name _________________________________
Class________
Date __________________
Topic 2 Adding and Subtracting Decimals
Pre-Assessment
1. 2,645 + 385
2. 822 – 348
3. 3,643 – 291
4. Estimate to decide if the sum of 321 + 267 is more or less than 600.
5. Is the sum of 0.57 + 0.31 less than or greater than one? Explain.
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6.
How is adding 5.51 + 2.31 similar to adding $2.31 + $5.51? Explain.
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7.
Each shaded area in the grids below represents a decimal.
Part A: What is the sum of the decimals?
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Part B: Explain how you found your answer.
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8.
Write an expression that is represented by the model below.
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