Decimals for Singapore primary maths
Connect tenths, hundredths and thousandths to place value and fractions. Compare and round decimals before using their place values to explain calculations.
Choose your primary level and path. Each guide links to the interactive lesson and its prerequisite ideas.
Primary 4 decimals
- Tenths, hundredths and thousandthsRead the value of each digit in a decimal · About 12 minutes
- Adding and subtracting decimalsAdd and subtract decimals with up to two decimal places · About 12 minutes
- Use decimal place value to three decimal placesUse decimal place value to three decimal places · About 10 minutes
- Compare and order decimalsCompare and order decimals · About 10 minutes
- Convert fractions to decimals when the denominator is a factor of 10 or 100Convert fractions to decimals when the denominator is a factor of 10 or 100 · About 10 minutes
- Round decimals to a whole number, one or two decimal placesRound decimals to a whole number, one or two decimal places · About 10 minutes
- Add and subtract decimals up to two decimal placesAdd and subtract decimals up to two decimal places · About 10 minutes
- Multiply and divide two-place decimals by one-digit numbersMultiply and divide two-place decimals by one-digit numbers · About 10 minutes
- Divide whole numbers with a decimal quotient and round the resultDivide whole numbers with a decimal quotient and round the result · About 10 minutes
- Express decimals as fractionsExpress decimals as fractions · About 10 minutes
Primary 5 decimals
- Multiply and divide three-place decimals by powers and multiples of 10Multiply and divide three-place decimals by powers and multiples of 10 · About 12 minutes
- Convert measurements using decimalsConvert measurements using decimals · About 12 minutes
Primary 5 Foundation decimals
- Use decimal place value up to three placesUse decimal place value up to three places · About 12 minutes
- Compare and order decimalsCompare and order decimals · About 12 minutes
- Convert fractions whose denominator is a factor of 10 or 100 to decimalsConvert fractions whose denominator is a factor of 10 or 100 to decimals · About 12 minutes
- Round decimalsRound decimals · About 12 minutes
- Add and subtract two-place decimals without a calculatorAdd and subtract two-place decimals without a calculator · About 12 minutes
- Multiply and divide three-place decimals by 10, 100 and 1000 without a calculatorMultiply and divide three-place decimals by 10, 100 and 1000 without a calculator · About 12 minutes
- Convert measurement units using decimalsConvert measurement units using decimals · About 12 minutes
- Express decimals as fractionsExpress decimals as fractions · About 12 minutes
Primary 6 Foundation decimals
- Multiply and divide decimalsMultiply and divide decimals · About 12 minutes
- Calculate a decimal quotient of whole numbers without a calculatorCalculate a decimal quotient of whole numbers without a calculator · About 12 minutes
- Round a calculated answer to the required accuracyRound a calculated answer to the required accuracy · About 12 minutes