Let’s see how many tens and ones are in each number. We can use a place value chart to help us ... Now let's try some more examples. Numbers up to 100 can be partitioned into tens and ones.

We always start with the ones first. 11 is made up of 1 ten ... There are 2 tens left which is 20 and 5 ones which is 5. As with the other example we will use a place value chart to work out ...