Grade 6 | Unit 5 | Lesson 3: Adding and Subtracting Decimals with Few Non-Zero Digits | Practice Problems

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A student said we cannot subtract 1.97 from 20 because 1.97 has two decimal digits and 20 has none. Do you agree with him? Explain or show your reasoning.

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• 3 tenths - 6 thousandths = 306 thousandths.

• 3 tenths - 6 thousandths = 97 thousandths.

• 3 tenths - 6 thousandths = 24 thousandths.

• 3 tenths - 6 thousandths = 294 thousandths.

Complete the calculations so that each shows the correct difference. Description: 3 decimal subtraction problems.

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The school store sells pencils for $0.30 each, hats for $14.50 each, and binders for $3.20 each. Elena would like to buy 3 pencils, a hat, and 2 binders. She estimated that the cost will be less than $20. Do you agree with her estimate? Explain your reasoning. Estimate the number of pencils she could buy with $5. Explain or show your reasoning.

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At a constant speed, a car travels 75 miles in 60 minutes. How far does the car travel in 18 minutes? If you get stuck, consider using the table.

Minutes	Distance in miles
60	75
6
18

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