Foundation Year 4 Subtraction with more than one exchange with answers

These are PDF files that you can print off at home.

Children subtract up to 4-digit numbers with more than one exchange, using the written method of column subtraction. They perform subtractions involving two separate exchanges (for example, from the thousands and from the tens). To support understanding, continue solving these subtractions alongside the concrete resources of base 10 and place value counters. 

You can use these questions to support your child.

Does it matter which column you subtract first?

Do you need to make an exchange?

How can you subtract two numbers if one of them has fewer digits than the other?

If you cannot exchange from the tens/hundreds, what do you need to do?

Which column can you exchange from?

Children may not line up the digits in the place value columns correctly. When exchanging a number, children may put the ones in the incorrect place. When exchanging over two columns, children may exchange directly from, for example, hundreds down to ones and miss out the exchange to tens.

You can use these supporting sentences to help them understand the exchange.

I cannot subtract_______ ones/tens/hundreds from ____ones/tens/hundreds, so I need to make an exchange.

I can subtract_______ ones/tens/hundreds from ____ones/tens/hundreds, so I do not need to make an exchange.