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Overview
Grade 7 Math
4. Relationships between decimals, fractions, ratios, and percents
4.6 Applications of percents
Applications of Percents: Percent Increase and Decrease
Master real-world percent problems, from sales discounts and tax to population growth, using a simple percent increase and decrease method.
What You'll Learn
Identify whether a word problem describes a percent increase or a percent decrease.
Calculate the amount of change using the formula change equals original amount times the percent rate.
Apply the percent increase formula, new amount equals original amount plus the amount of change.
Apply the percent decrease formula, new amount equals original amount minus the amount of change.
Solve real-world problems involving discounts, sales tax, tips, and population growth.
Work backward from a new amount and percent to find the original amount.
What You'll Practice
1
Finding sale prices after percentage discounts
2
Working backward from discount amounts to find original prices
3
Calculating tips on restaurant bills
4
Computing simple interest on loans over one year
5
Solving compound interest problems with multi-year growth
Why This Matters
Percent applications are essential life skills you'll use constantlyfrom comparing discounts while shopping, calculating tips at restaurants, to understanding credit card interest and savings account growth. Mastering these calculations helps you make smart financial decisions.
Before You Start — Make Sure You Can:
This Unit Includes
5 Video lessons
Practice exercises
Learning resources
Skills
Percentages
Discounts
Simple Interest
Compound Interest
Decimal Conversion
Word Problems
Financial Literacy
BC Curriculum Aligned