Ratio reasoning means scaling a known ratio up or down to answer a question. That runs on multiplication, division, and equivalent fractions. Warm those up and you can reason through any recipe or rate.
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: 6 × 5 = 30.
Level 1 To split a number into equal groups.
Example: 20 ÷ 4 = 5.
Level 1 Fractions that look different but show the same amount.
Example: 3/4 = 6/8 — multiply top and bottom by 2.
Level 1 To count by jumping the same amount each time.
Example: Skip count by 5: 5, 10, 15.
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 6 × 5?
2. What is 20 ÷ 4?
3. 3/4 = ?/8 — the missing top number is…?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 3-6 →