About this topic
Before you begin
Compare and round decimals, add and subtract equal place values, and scale decimal amounts when converting units.
Learning goals
- Identify each decimal place count
- Write a decimal from its place values
- Compare decimal values
- Order decimal values
- Express a decimal as a fraction
- Express a fraction as a decimal
- Round a decimal to the requested place
- Add decimals
- Subtract decimals
- Multiply a decimal by 10, 100 or 1000
- Divide a decimal by 10, 100 or 1000
- Express a decimal measurement in the smaller unit
- Express a measurement as a decimal in the larger unit
Syllabus statements covered
- Notation, representations and place values (tenths, hundredths, thousandths)
- Comparing and ordering decimals
- Expressing decimals as fractions
- Expressing fractions as decimals when the denominator is a factor of 10 or 100
- Rounding decimals to
- The nearest whole number
- 1 decimal place
- 2 decimal places
- Adding and subtracting decimals (up to 2 decimal places) without calculator
- Multiplying and dividing decimals (up to 3 decimal places) by 10,100,1000 without calculator
- Converting a measurement from a smaller unit to a larger unit in decimal form, and vice versa
- Kilometres and metres
- Metres and centimetres
- Kilograms and grams
- Litres and millilitres
Choose a lesson
Work through them in order.
- Not startedDecimal place value and roundingNextRepresent tenths, hundredths and thousandths, compare equal units and round only when requested.
- Not startedAdd and subtract decimalsNextAlign equal place values and exchange units when adding and subtracting decimals.
- Not startedDecimal scaling and unit conversionNextScale place values by 10, 100 and 1000 and choose the correct factor for a unit conversion.