Hundreds, tens and ones

To make addition sums easier, you can separate the hundreds, tens and units and add them up separately.

Have a look at how separating works for this sum:
      31 + 22

Using this method you can work out that 31 + 22 = 53.

Now look at this sum with hundreds as well as tens and units:
      125 + 100 + 235 + 132

Using this method you can work out that 125 + 100 + 235 + 132 = 592.