Any suggestions how to help children count in tens and hundreds within 1000?

[LostMarbles99]

I teach year 4 and every year it's the same old thing where they just don't get this! I'm hoping someone reading this may have a suggestion as to how I can teach this better?

E.g. 189, 199, ? 219,?
or

2033, 2023, 2013, ?, ? will really flummox them!

I do lots of work with a 1000 square but I'm surely missing something and can make it easier?

It always the numbers where they have to bridge the hundred or thousand that causes the issue.

Any advice?

Lots of practise, I think. These are the tricky ones though. I sometimes use the constant function on the calculator so they can see lots of sequences quickly. With the 2 examples you have given, I would also get them to count on or back in 1s. We also have lots of hundreds, tens and units apparatus, so they can add on 10s and take them off.

I used to use arrow cards with y3 lower set. I'd get them to lie them all out, hundreds on left, tens in middle and ones on right, from 100/10/1 at the top, to 900/90/9 at the bottom. I would get them to make, for example 427 and ask them to count on 10 and make the resulting number. Soon they realised they just needed the tens card below to count on 10. then we investigated what happened when you had to bridge to 10 or the 100.

You could also have 1000s arrow cards for what you want.