Ratio Notation
Use ratio notation to describe the relationship between two or more quantities, simplify ratios to their simplest form, and convert between ratio and fraction representations
Typical age: 11–12 years
“If a smoothie recipe uses orange juice and mango juice in the ratio 3:2, can your child simplify that ratio, express it as a fraction, and work out how much of each is needed for a given total amount?”
0 / 3 mastered
Explore graph
Needs first
- Proportional Reasoning VocabularyREQUIRED
Ratio notation (a:b) requires 'ratio', 'simplify', and 'equivalent' as defined terms
- Factors, multiples, and primesREQUIRED
Simplifying ratios requires finding common factors — extends KS2 factor pairs and common factors
- Understanding fractionsREQUIRED
Ratio notation and simplification extends KS2 unequal sharing and grouping with ratios
- Proportion Graphs
Ratio notation and simplification is complemented by double number line representations
Unlocks next
- Dividing Quantities by RatioREQUIRED
Dividing in a ratio requires understanding ratio notation and simplification first
- Coordinates (age 12+)
Similar shapes have sides in a constant ratio — connects to ratio notation
- Ratio Notation and RelationshipsREQUIRED
Understanding multiplicative relationships requires fluent ratio notation