The compensation strategy is a mental math strategy to solve easier the operations.
We have 26 +6
The first step is make one of the addends more friendly.
So its more easier to determinate if 26 becomes in 30
and. So we add 4 units then we subtarct 4 units to the other number.
26+4 = 30
6-4 = 2
30 +2 = 32
Then 26+6 = 32