Application: Solving Percent Word Problems
This Grade 7 math skill from Reveal Math, Accelerated teaches students to solve a variety of percent word problems including finding a percent of a number, finding the whole given a part and percent, and finding what percent one number is of another. Students apply these skills to real-world contexts such as discounts, taxes, and tips.
Key Concepts
To solve real world percent problems, identify the known and unknown values (the part , the whole , or the percent ) and set up a percent proportion or equation:.
$$\frac{\text{part}}{\text{whole}} = \frac{\text{percent}}{100}$$.
Common Questions
How do you find a percent of a number?
Multiply the number by the percent written as a decimal. For example, 20% of 50 = 0.20 × 50 = 10.
How do you find the whole when given a part and percent?
Divide the part by the percent expressed as a decimal. For example, if 15 is 30% of a number, then the whole = 15 ÷ 0.30 = 50.
How do you find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 18 is what percent of 72? 18/72 × 100 = 25%.
What real-world situations involve percent word problems?
Discounts, sales tax, tips, markups, and interest are common real-world contexts for percent word problems in Grade 7 math.
Where is this skill taught in Reveal Math Accelerated?
Solving percent word problems is a core Grade 7 skill in the Reveal Math, Accelerated textbook.