Dividing a fraction by a fraction runs on two feeder skills: multiplying fractions (multiply tops, multiply bottoms) and the reciprocal (flip) idea. Warm both up and "keep–flip–multiply" becomes easy to follow.
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 The top number of a fraction; it tells how many parts you have.
Example: In 2/3, the numerator is 2.
Level 1 The bottom number of a fraction; it tells how many equal parts the whole has.
Example: In 2/3, the denominator is 3.
Level 1 To add the same number many times to find a total.
Example: 2 × 4 means add 4 two times: 4 + 4 = 8.
Level 1 Two fractions that name the same amount.
Example: 1/2 and 2/4 are equivalent fractions.
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. What is 1/2 × 1/3? (multiply tops, multiply bottoms)
2. What is the reciprocal (flip) of 2/3?
3. Which fraction is equivalent to 1/2?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 2-3 →