To find a percent of a number you turn the percent into an easy fraction or decimal, then multiply. Knowing 50% = 1/2, 25% = 1/4, 10% = 1/10 and your times facts makes this quick.
These are words you'll need to already know to follow this lesson — not the new words the lesson teaches. Review each one, its meaning, and the example so the new lesson makes sense from the start.
Level 1 One of two equal parts of something.
Example: Half of 20 is 10 (20 ÷ 2).
Level 1 One of four equal parts of something.
Example: A quarter of 20 is 5 (20 ÷ 4).
Level 1 To add the same number many times to find a total.
Example: 5 × 6 = 30.
Level 1 To make a number 10 times smaller.
Example: 30 ÷ 10 = 3.
These check the skills you'll need for this lesson — not the new lesson itself. Answer all 3, then press Show my path. No grade — it just suggests where to start.
1. 50% of a number is the same as…
2. What is half of 20?
3. What is 30 ÷ 10?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 4-4 →