Decimals
Build and connect the representations and methods in decimals.
More
Offline pages
Saved on this device only. Connect at least once every 30 days to confirm Premium. Sign-out or a change of account removes saved copies.
Before you begin
Build and connect the representations and methods in decimals.
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
Lessons
Work through them in order.
About lesson progress
Lesson marks record what you have studied. Checks show understanding separately. Guest marks come from this device.
- Decimal place value and roundingRepresent tenths, hundredths and thousandths, compare equal units and round only when requested.
- Add and subtract decimalsAlign equal place values and exchange units when adding and subtracting decimals.
- Decimal scaling and unit conversionScale place values by 10, 100 and 1000 and choose the correct factor for a unit conversion.