7th grade percent problems

Quick answer

This 7th grade (ages 12–13) unit covers multi-step percent problems: percent increase and decrease, discounts, sale prices, sales tax, tips and percent error. It starts with Math Antics' percent review, then Math with Mr. J and Khan Academy's "Tax, discount and tip examples". Loop one worked example, slow it to 0.75×, and repeat it.

Play all on repeat

Videos in this playlist

  1. 1Math Antics - What Are Percentages?Math Antics - What Are Percentages?mathanticsPlay from here Loop
  2. 2Math Antics - Finding A Percent Of A NumberMath Antics - Finding A Percent Of A NumbermathanticsPlay from here Loop
  3. 3How to Solve Percent Problems Using the Percent Equation | Math with Mr. JHow to Solve Percent Problems Using the Percent Equation | Math with Mr. JMath with Mr. JPlay from here Loop
  4. 4Math Antics - Calculating Percent ChangeMath Antics - Calculating Percent ChangemathanticsPlay from here Loop
  5. 5Percent of Change | Percent Increase and Decrease | Math with Mr. JPercent of Change | Percent Increase and Decrease | Math with Mr. JMath with Mr. JPlay from here Loop
  6. 6Calculating Percent Increase | Percent Change | Math with Mr. JCalculating Percent Increase | Percent Change | Math with Mr. JMath with Mr. JPlay from here Loop
  7. 7Calculating Percent Decrease | Percent Change | Math with Mr. JCalculating Percent Decrease | Percent Change | Math with Mr. JMath with Mr. JPlay from here Loop
  8. 8Calculating Percent Increase in 3 Easy StepsCalculating Percent Increase in 3 Easy StepsMashup MathPlay from here Loop
  9. 9How to Find Percent Change | Math with Mr. JHow to Find Percent Change | Math with Mr. JMath with Mr. JPlay from here Loop
  10. 10Finding the percent increase in pricing | 7th grade math (IM® v.360 aligned) | Khan AcademyFinding the percent increase in pricing | 7th grade math (IM® v.360 aligned) | Khan AcademyKhan AcademyPlay from here Loop
  11. 11Writing expressions for a percent increase | 7th grade math (IM® v.360 aligned) | Khan AcademyWriting expressions for a percent increase | 7th grade math (IM® v.360 aligned) | Khan AcademyKhan AcademyPlay from here Loop
  12. 12Expressing a percent decrease as a percentage of the original | Khan AcademyExpressing a percent decrease as a percentage of the original | Khan AcademyKhan AcademyPlay from here Loop
  13. 13How to Calculate a Discount and Sale Price | Math with Mr. JHow to Calculate a Discount and Sale Price | Math with Mr. JMath with Mr. JPlay from here Loop
  14. 14How to Calculate a Discount without a Calculator | Calculating Discounts by Hand | Math with Mr. JHow to Calculate a Discount without a Calculator | Calculating Discounts by Hand | Math with Mr. JMath with Mr. JPlay from here Loop
  15. 15Finding the Original Price Given the Sale Price and Percent Discount | Math with Mr. JFinding the Original Price Given the Sale Price and Percent Discount | Math with Mr. JMath with Mr. JPlay from here Loop
  16. 16Finding the discount percentage from a sale price | Khan AcademyFinding the discount percentage from a sale price | Khan AcademyKhan AcademyPlay from here Loop
  17. 17How to Calculate Sales Tax | Math with Mr. JHow to Calculate Sales Tax | Math with Mr. JMath with Mr. JPlay from here Loop
  18. 18How to Calculate Sales Tax without a Calculator | Calculating Sales Tax by Hand | Math with Mr. JHow to Calculate Sales Tax without a Calculator | Calculating Sales Tax by Hand | Math with Mr. JMath with Mr. JPlay from here Loop
  19. 19Finding the sales tax percentage from a price | 7th grade math (IM® v.360 aligned) | Khan AcademyFinding the sales tax percentage from a price | 7th grade math (IM® v.360 aligned) | Khan AcademyKhan AcademyPlay from here Loop
  20. 20Tax, discount and tip examplesTax, discount and tip examplesKhan AcademyPlay from here Loop
  21. 21An Intro to Percent Error | Math with Mr. JAn Intro to Percent Error | Math with Mr. JMath with Mr. JPlay from here Loop
  22. 22Finding percent error | 7th grade math (IM® v.360 aligned) | Khan AcademyFinding percent error | 7th grade math (IM® v.360 aligned) | Khan AcademyKhan AcademyPlay from here Loop
  23. 23Percent word problem examplesPercent word problem examplesKhan AcademyPlay from here Loop
  24. 24How to Solve Percentage Word ProblemsHow to Solve Percentage Word ProblemsMashup MathPlay from here Loop
  25. 25Percent Word Problems | Solving Percent Problems Using the Percent EquationPercent Word Problems | Solving Percent Problems Using the Percent EquationMath with Mr. JPlay from here Loop

What should a student be able to do after this unit?

Find a percent of a number, calculate percent increase and decrease, work out a sale price after a discount, add sales tax or a tip to a bill, find an original price, and calculate percent error. Videos move from review to these real-world problems.

How can RepeatWatch help with percent word problems?

Set an A–B loop on the one problem a student is stuck on, from reading the question to the answer. Play it at 0.75× when the percent becomes a decimal. Save several examples on keys 1–9 and use Stop after N loops to end on time.

Frequently asked questions

Is the percent change formula covered?

Yes. Math Antics' "Calculating Percent Change" and several Math with Mr. J videos explain the change divided by the original amount, with separate examples for percent increase and percent decrease, before the discount and tax lessons.

Is this always taught in 7th grade?

Grade levels vary by country and school. In the US, percent problems with tax, tips and discounts usually come in 7th grade (ages 12–13), building on 6th grade percent basics. Use whichever videos match where a student is.