Partitioning numbers is a phrase which many parents may not be familiar with but is being used increasingly in schools. Simply it is a process to help with mental and written calculations which involves splitting the number. At first children will partition 2-digit numbers into tens and units: eg 56 = 50 + 6. This can be developed further : eg 56 = 40 + 16 or 30 + 26. Both addition and subtraction can be done using this technique. As children become familiar with 3-digit numbers they can also partition these into hundreds, tens and units in several different ways. This set of worksheets gives plenty of practice at partitioning 3-digit numbers. Go to Partition 3-digit numbers