Curriculum placement
Grade 7. This describes the skill, not a learner estimate.
Percent increase and decrease
Solve percent increase decrease markup and interest problems
Problem types
- Select the true selling prices after a percent change
- Credit card balance over a few months
- What credit costs
- Tell simple from compound interest in a table
- Check an investment claim
- Find the percent change
- Apply a percent change
- Recover the original quantity
- Apply two percent changes
- Percent in tax, tips, sales and interest
- Chain two percent changes
- Simple interest and the total
- Compare two loan offers
Builds on
- Dividing fractions
- Percent of a number
- The four operations with decimals
- Fluent decimal arithmetic · Useful idea
Finding a final price after a percent change multiplies decimals.
- Solving one-step equations · Useful idea
Finding the original amount before a percent change is a one-step equation with an unknown factor.
Leads to
- Income tax, budgets, and net worth
- Building an exponential model
- Rules for a geometric sequence · Extend the idea
Repeated percent growth multiplies by the same factor each time, which makes a geometric sequence.
Related skills
- Circumference and area of a circle · Shared foundations
- Simplifying complex fractions · Shared foundations
- Laws of exponents · Shared foundations
- Profit, cost, and taxes · Shared foundations
- Mean and median · Shared foundations
Open the interactive map to explore lessons and skill connections.