Adding and subtracting 10p!

We've been both cutting and increasing prices today - involving adding and subtracting multiples of 10.

i.e. £2.10 + 10p = 

      £3.45 - 10p =

      £2.25 + 30p =

      £4.48 - 30p =

To make this easier, I have encouraged the children to write HTU (hundreds, tens, units) above the appropriate digit first. This way they can identify what the tens number is, as this is the only number that will change.

It is a good idea to always begin with adding and subtracting just 10p, and then progress to other multiples of 10.

You can have a go at pricing a few items at home and setting up a shop. Slash prices for the day or put them up as a way to raise some extra money for charity!

We have also talked about the importance of using zero as a place holder, when there are no tens.

i.e. writing £5.08 instead of £5.8