Lesson 5: Practice Problems

Problem 1

Write each subtraction equation as an addition equation.

Problem 2

Find each difference. If you get stuck, consider drawing a number line diagram.

Problem 3 From Unit 4 Lesson 10

A restaurant bill is $59 and you pay $72. What percentage gratuity did you pay?

Problem 4

Find the solution to each equation mentally.

Problem 5 From Unit 2 Lesson 3

One kilogram is 2.2 pounds. Complete the tables. What is the interpretation of the constant of proportionality in each case?

  1. pounds

    kilograms

    kilogram per pound.

  2. kilograms

    pounds

    pounds per kilogram.