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St Joseph'sCatholic Primary School & Nursery

Maths

LO: I can use column subtraction with an exchange.

 

Well done for completing the process for column subtraction remembering to start with the ones and follow the columns.

 

Today, we are moving onto the exchanging in subtraction. Watch the video to remind yourself of the process and remember the exchange is at the top for subtraction.

Again, there is challenge 1, 2 and 3, you need to choose one of the challenges. Year 3 you should aim for Challenge 1 and 2 unless you want to challenge yourself then you could try challenge 3 after challenge 2.

 

Top tips for Column Subtraction

  • Put the HTOs at the top.
  • Make sure you follow down the columns.
  • Always start with the ones column.
  • Use your hundreds, tens and ones pictorial representations to help you.

Column Subtraction with an Exchange

Still image for this video

Interactive Practical Place Value Counters

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