The Grocery Store Challenge: How to Use Unit Rates to Solve Word Problems
A unit rate compares a quantity to one unit of another, which is what makes prices comparable across different package sizes. Divide the total by the number of units and compare. The examples below work through grocery comparisons, with practice problems and answers.
How to Find Unit Rates and Rates?
To find a unit rate, divide the amount by the number of units. For example, 240 miles in 4 hours is 240 ÷ 4 = 60 miles per hour. Keep the units in that order: dollars divided by items gives dollars per item; miles divided by hours gives miles per hour. Rates help you compare […]