# Ratio & Percent Problems (Grade 7)

Videos and lessons to help Grade 7 students learn how to use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.

Common Core: 7.RP.3

### Suggested Learning Targets

• I can calculate percentage of increase and percentage of decrease.
• I can calculate simple interest, tax, markups and markdowns.
• I can calculate percent increase and decrease.
• I can calculate gratuities, commissions, and fees.
• I can calculate percent error.
• I can solve multi-step ratio and percent problems using proportional relationships.
• I can justify multi-step ratio and percent in real life situations.
• I can iIdentify or describe errors to given multi-step problems and present corrected solutions.

Related Topics:

Common Core for Mathematics

Use proportional relationships to solve multistep ratio and percent problems-- 1 of 5 (7.RP.3)
In this lesson you will learn how to solve multistep percent problems by using proportions and equations.

Use proportional relationships to solve multistep ratio and percent problems-- 2 of 5 (7.RP.3)
In this lesson you will learn how to compute successive percentages by using proportions and equations.

Use proportional relationships to solve multistep ratio and percent problems-- 3 of 5 (7.RP.3)
In this lesson you will learn how to find the amount of change and the final amount given the percent of change and the original amount by using diagrams, proportions, and equations.

Use proportional relationships to solve multistep ratio and percent problems-- 4 of 5 (7.RP.3)
In this lesson you will learn how to find the percent change and what percent the final amount is of the original amount by using diagrams, proportions, and equations.

Use proportional relationships to solve multistep ratio and percent problems-- 5 of 5 (7.RP.3)
In this lesson you will learn how to find the original amount and amount of change given the percent change and final amount by using proportions and equations.

Solve problems with taxes using proportions - 7.RP.3
In this lesson, you will learn to solve percent problems involving computation of the tax on an item by using two equivalent ratios to fond an unknown.

Solve problems with tips using proportions - 7.RP.3
In this lesson, you will learn to solve percent problems involving tips by using two equivalent ratios to fond an unknown.

Find the percent of increase using a proportion - 7.RP.3
In this lesson, you will learn to solve a percent of change problem where there is a percent of increase. You will do this by analyzing the multiplicative relationships within ratios or between ratios.

Find the percent of decrease using a proportion - 7.RP.3
In this lesson, you will learn to solve a percent of change problem where there is a percent of decrease by using two equivalent ratios to find an unknown.

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You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.