Mathematics
Ratio & Proportion
Procedural
11–12 yrs
Ratio Notation
比率符号表示
Description
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
Mastery Evidence
- Write a ratio from a word problem and simplify it (e.g. 12:8 = 3:2)
- Convert a ratio to equivalent fractions of a whole (e.g. 3:2 means 3/5 and 2/5)
- Simplify ratios involving decimals or fractions by finding a common multiplier
Assessment Prompt
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?
