Maths: column subtraction

Sunday 28 September 2025

This week, we’ve moved onto column subtraction in maths.

We used Base 10 in a fun maths game yesterday to represent our subtractions.

The children represented 49 on on their whiteboards with Base 10 (4 tens and 9 ones). They then had to roll a dice and subtract that number from their Base 10 with the aim of getting down to zero. However, this became a problem when they ran out of ones and only had tens left!

They had to exchange 1 ten for 10 ones.

This game allowed the children to really visualise and understand the process of exchanging in column subtraction.

Help at home: use this website (https://www.coolmath4kids.com/manipulatives/base-ten-blocks) to play the game with your children at home.

Moortown Primary School, Leeds
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