Source: Exemplar
A boy standing on the third stair on a staircase goes up by five more stairs. Which stair is he standing at now? At which step will he be after he comes down by 2 stairs?
Model Answer
The boy is now at the 8th stair (3 + 5 = 8). After coming down by 2 stairs, he will be at the 6th stair (8 - 2 = 6).