Vertical / Column Subtraction

A demonstration tool for vertical subtraction

Learning Objectives:

• Year 2: solve problems with subtraction using concrete objects and pictorial representations, including those involving numbers, quantities and measures
• Year 2: solve problems with subtraction by applying their increasing knowledge of mental and written methods
• Year 2: to [add and] subtract numbers using concrete objects, pictorial representations, and mentally, including
  • a two-digit number and ones
  • a two-digit number and tens
  • two two-digit numbers
• Year 3: to add and subtract numbers with up to 3 digits, using formal written methods of columnar addition and subtraction
• Year 4: to add and subtract numbers with up to 4 digits using the formal written methods of columnar addition and subtraction where appropriate
• Year 5: to add and subtract whole numbers with more than 4 digits, including using formal written methods (columnar addition and subtraction)

This resource is designed for demonstration of formal written methods for 2 and 6-digit vertical subtraction.

The calculation is shown in a horizontal format first as children frequently find it tricky to transcribe one to the other.

The tricky columns tick box allows the random digits 1 to 9. This means that there are sometimes no tricky columns!

If you're working from home why not allow the children to set their own questions using this resource on a tablet.

UPDATES:
After some very helpful requests I've added up to 6 digits and the occassional subtrahend that is one digit smaller.
I've also added a reset button in case you've got in a muddle.

Have fun!