To divide a whole number by a fraction (like "how many 1/2s in 3?") you lean on counting equal pieces and knowing how many unit fractions fill one whole. Warm those up and dividing by a fraction feels like simple counting.
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 To add the same number many times to find a total.
Example: 3 × 2 means add 2 three times: 2 + 2 + 2 = 6.
Level 1 The bottom number of a fraction; it tells how many equal parts fill one whole.
Example: In 1/4, the denominator 4 means 4 fourths fill one whole.
Level 1 One complete thing before it is cut into parts.
Example: One pizza is 1 whole before you slice it.
Level 1 Pieces that are all the same size.
Example: A bar broken into 4 equal parts has 4 pieces of the same size.
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. How many fourths (1/4) are in 1 whole?
2. What is 3 × 4?
3. In 1/3, the bottom number 3 tells you the whole is cut into how many equal parts?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 2-2 →