Grade 6 · Math · Lesson 13

Find Percent of a Quantity

Finding a percent OF a quantity means asking: how big is that share of the whole? "25% of 80" asks for 25 out of every 100 of the 80 marbles, or the dollars in a sale, or the seats in a theater. The percent tells you what fraction of the whole to take, and the quantity tells you the size of the whole. Once you can convert a percent into a decimal or a fraction, finding the part is just a multiplication.

What this lesson teaches

1Find a percent of a whole number by converting the percent to a decimal and multiplying
2Find a percent of a whole number by writing the percent as a fraction over 100 and multiplying
3Use 10% as a benchmark to find 20%, 30%, 50%, and other friendly percents mentally
4Solve real-world problems involving discounts, tips, and savings as percent of a quantity

Free · 7 days · No credit card

Unlock the full HSEA system for 7 days.

Create a kid profile, open any lesson, save progress — your family uses HSEA exactly the way a paying family does. Cancel anytime. Nothing to set up, no card required.

✓ All 1,680 lessons, Grades 1–6, every subject
✓ Profiles + saved progress for every kid
✓ Final exams + printable certificates

Start your 7-day free trial →

Already convinced? See full membership plans →