Unit Rate Grocery Comparisons for 8th Grade
A practice packet of grocery-store scenarios that has 8th graders find unit rates by dividing price by quantity, compare sizes to pick the better buy, and scale those rates to larger amounts. It opens with a worked cereal example and a clear key idea, so students can follow the method before working on their own.
“I need to create set of practice problems for my 8th graders who are struggling with math. They need to be able to take scenarios and calculate the unit rate, and then use that unit rate to scale out to larger amounts.”
Teacher Guide & Tips
- Use this as a guided practice block of about 30 to 45 minutes, starting with a whole-class walkthrough of the cereal example before students work independently or in pairs.
- Discussion question: Why can the bigger box cost more at the register and still be the better buy, and what does the unit rate tell you that the total price does not?
- Scaffold for struggling readers: have them write the division setup (price ÷ ounces) on each problem first, label the result as "per oz," and then compare the two numbers before deciding.
- Extension for advanced students: ask them to scale a unit rate to a new total (for example, how much would 60 oz cost at the better rate?) and to explain when a smaller unit rate might not be the best choice.
- Estimated time: about 5 minutes for the worked example and 25 to 40 minutes for the practice problems, with a short debrief at the end.
What is Diffit?
Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free“I need to create set of practice problems for my 8th graders who are struggling with math. They need to be able to take scenarios and calculate the unit rate, and then use that unit rate to scale out to larger amounts.”
Teacher Guide & Tips
- Use this as a guided practice block of about 30 to 45 minutes, starting with a whole-class walkthrough of the cereal example before students work independently or in pairs.
- Discussion question: Why can the bigger box cost more at the register and still be the better buy, and what does the unit rate tell you that the total price does not?
- Scaffold for struggling readers: have them write the division setup (price ÷ ounces) on each problem first, label the result as "per oz," and then compare the two numbers before deciding.
- Extension for advanced students: ask them to scale a unit rate to a new total (for example, how much would 60 oz cost at the better rate?) and to explain when a smaller unit rate might not be the best choice.
- Estimated time: about 5 minutes for the worked example and 25 to 40 minutes for the practice problems, with a short debrief at the end.
Unit Rate Grocery Comparisons for 8th Grade
A practice packet of grocery-store scenarios that has 8th graders find unit rates by dividing price by quantity, compare sizes to pick the better buy, and scale those rates to larger amounts. It opens with a worked cereal example and a clear key idea, so students can follow the method before working on their own.
What is Diffit?
Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free