Compose and calculate with decimals including column addition and subtraction
Why this, why now
In this unit pupils will extend their understanding of formal calculation strategies to use column methods to add and subtract with decimal numbers.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 2 / 22
Compose and calculate with decimals including column addition and subtraction
In this unit pupils will extend their understanding of formal calculation strategies to use column methods to add and subtract with decimal numbers.
5 lessons- Use knowledge of column addition and subtraction to calculate with decimal numbers
- Use representations to round a decimal number with tenths to the nearest whole number
- Explain that decimal numbers with tenths can be composed multiplicatively
- Explain that decimal numbers with tenths can be composed additively
- Use known facts and mental strategies to calculate with decimal numbers within and across a whole