Use column subtraction to subtract from a 2- or 3-digit number
I can use column subtraction to subtract from a 2- or 3-digit number.
Use column subtraction to subtract from a 2- or 3-digit number
I can use column subtraction to subtract from a 2- or 3-digit number.
Lesson details
Key learning points
- Start by subtracting the number with the smallest place value first.
- The minuend always appears first in a column subtraction.
- The subtrahend is written underneath the minuend.
Common misconception
Pupils may make errors when subtracting zero or when writing zero in the ones, tens or hundreds column of the difference.
Encourage pupils to write zero, using the examples given in the slide deck. Write zero in the hundreds column of the difference when using column subtraction; explain this is not written when the calculation is presented as a horizontal equation.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - A subtrahend is a number subtracted from another.
Column subtraction - Column subtraction is a way of subtracting numbers by writing a number below another.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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