Lesson 3: Practice Problems
Problem 1
Here is a base-ten diagram that represents 1.13. Use the diagram to find
Explain or show your reasoning.
Problem 2
Compute the following sums. If you get stuck, consider drawing base-ten diagrams.
Problem 3
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 his statement? Explain or show your reasoning.
Problem 4
Decide which calculation shows the correct way to find
Problem 5
Complete the calculations so that each shows the correct difference.
Problem 6 From Unit 5 Lesson 1
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 could she buy with $5. Explain or show your reasoning.
Problem 7 From Unit 4 Lesson 15
A rectangular prism measures
Calculate the number of cubes with edge length
cm that fit in this prism. What is the volume of the prism in
? Show your reasoning. If you are stuck, think about how many cubes with -cm edge lengths fit into .
Problem 8 From Unit 2 Lesson 12
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 |
---|---|