1
What is a ratio?
If there are 2 cats and 3 dogs, the ratio of cats:dogs is 2:3.
🐱🐱 : 🐶🐶🐶 = 2:3
Ratio & Proportion
📖 Study · Ratio & Proportion
Ratio & Proportion
A ratio compares two amounts. Proportion uses ratios to scale up or down.
🎯 What you'll learn
- ✓Read and simplify ratios
- ✓Use ratios in real-life problems
2
Simplifying
Like fractions, divide both numbers by the same factor. 4:8 = 1:2.
4:8 → ÷4 → 1:2
3
Scaling up
If 2 books cost 10 rf, 6 books cost 30 rf. Multiply both sides by 3.
2 → 6 books 10 → 30 rf