Subtraction with tens and ones
You learn to subtract tens and ones: first the tens, then the ones.
How to work it out
- Split the second number into tens and ones.
- Take away the tens first.
- Then take away the ones.
76 − 28
- Partition 28 into 20 and 8.
- Take away the tens: 76 − 20 = 56.
- Take away the ones: 56 − 8 = 48.
More examples
93 − 27
- Partition 27 into 20 and 7.
- Take away the tens: 93 − 20 = 73.
- Take away the ones: 73 − 7 = 66.
64 − 34
- Partition 34 into 30 and 4.
- Take away the tens: 64 − 30 = 34.
- Take away the ones: 34 − 4 = 30.