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IM: 6.5.3: Adding and Subtracting Decimals with Few Non-Zero Digits (Practice)

Last updated 9 months ago
12 questions
1

Here is a base-ten diagram that represents 1.13. Use the diagram to find 1.13-0.46.

Explain or show your reasoning.

Compute the following sums. If you get stuck, consider drawing base-ten diagrams.
1

0.027+0.004

1

0.203+0.01

1

1.2+0.145

1

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.

1

Decide which calculation shows the correct way to find and explain your reasoning.

1

Complete the calculations so that each shows the correct difference.

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.
1

Do you agree with her estimate? Explain your reasoning.

1

Estimate the number of pencils could she buy with $5. Explain or show your reasoning.

A rectangular prism measures 71/2 cm by 12 cm by 151/2 cm.
1

Calculate the number of cubes with edge length 1/2 cm that fit in this prism.

1

What is the volume of the prism in cm^3? Show your reasoning. If you are stuck, think about how many cubes with 1/2-cm edge lengths fit into 1 cm^3.

1

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.