Lesson 8: Practice Problems
Problem 1
At the book sale, all books cost less than $5.
What is the most expensive a book could be?
Write an inequality to represent costs of books at the sale.
Draw a number line to represent the inequality.
Problem 2
Kiran started his homework before 7:00 p.m. and finished his homework after 8:00 p.m. Let
Decide if each statement it is definitely true, definitely not true, or possibly true. Explain your reasoning.
Problem 3 From Unit 6 Lesson 14
Consider a rectangular prism with length 4 and width and height
Find an expression for the volume of the prism in terms of
. Compute the volume of the prism when
, when , and when .
Problem 4 From Unit 7 Lesson 7
Match the mathematical statements with the statements written in English. All of these statements are true.
The number -15 is further away from 0 than the number -12 on the number line.
The number -12 is a distance of 12 units away from 0 on the number line.
The distance between -12 and 0 on the number line is greater than -15.
The numbers 12 and -12 are the same distance away from 0 on the number line.
The number -15 is less than the number -12.
The number 12 is greater than the number -12.
Problem 5 From Unit 6 Lesson 11
Here are five sums. Use the distributive property to write each sum as a product with two factors.