Ratio, rate & percentage for Singapore primary maths
Identify what the quantities compare. Use equal units to reason about ratios, parts out of 100 for percentages, and an amount per unit for rate.
Choose your primary level and path. Each guide links to the interactive lesson and its prerequisite ideas.
Primary 5 ratio, rate & percentage
- Percentage means per hundredRead a percentage as a number of parts per hundred · About 12 minutes
- A percentage of a quantityFind a percentage of a quantity · About 12 minutes
- Relate percentages to parts out of 100Relate percentages to parts out of 100 · About 12 minutes
- Convert between percentages fractions and decimalsConvert between percentages fractions and decimals · About 12 minutes
- Find a percentage of a quantityFind a percentage of a quantity · About 12 minutes
- Solve discount GST and annual-interest problemsSolve discount GST and annual-interest problems · About 12 minutes
- Interpret an amount per unitInterpret an amount per unit · About 12 minutes
- Solve problems involving rate, total amount and number of unitsSolve problems involving rate, total amount and number of units · About 12 minutes
Primary 6 ratio, rate & percentage
- What a ratio comparesRead a ratio as a comparison in equal units · About 12 minutes
- Dividing a quantity in a ratioFind the value of one unit from a total · About 12 minutes
- Find an original quantity from a percentageFind an original quantity from a percentage · About 12 minutes
- Find percentage increase and decreaseFind percentage increase and decrease · About 12 minutes
- Interpret ratios of two or three quantities using whole numbersInterpret ratios of two or three quantities using whole numbers · About 12 minutes
- Find equivalent ratios and simplify ratiosFind equivalent ratios and simplify ratios · About 12 minutes
- Divide a quantity in a given ratioDivide a quantity in a given ratio · About 12 minutes
- Find a missing term in a ratioFind a missing term in a ratio · About 12 minutes
- Connect ratios and fractionsConnect ratios and fractions · About 12 minutes
Primary 5 Foundation ratio, rate & percentage
- Interpret amount per unitInterpret amount per unit · About 12 minutes
- Solve rate, total-amount and number-of-units problemsSolve rate, total-amount and number-of-units problems · About 12 minutes
Primary 6 Foundation ratio, rate & percentage
- Interpret percentages as parts out of 100Interpret percentages as parts out of 100 · About 12 minutes
- Find a percentage of a quantityFind a percentage of a quantity · About 12 minutes
- Solve discount GST and annual-interest problemsSolve discount GST and annual-interest problems · About 12 minutes