Column subtraction
Why this, why now
In this unit pupils will identify the minuend and the subtrahend in column subtraction and explain the column subtraction algorithm. They will subtract from a 2-digit number using column subtraction with exchanging.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 12 / 20
Column subtraction
In this unit pupils will identify the minuend and the subtrahend in column subtraction and explain the column subtraction algorithm. They will subtract from a 2-digit number using column subtraction with exchanging.
5 lessons- Subtract from a 2-digit number using column subtraction with regrouping
- Identify the minuend and subtrahend in column subtraction
- Subtract from a 3-digit number using column subtraction with regrouping
- Use column subtraction to subtract from a 2- or 3-digit number
- Make efficient use of subtraction strategies including column subtraction