DAY 14

Comment

2 1/2 is one half of 5.
1 1/4 is one quarter of5.

Answer

3 1/8.

Readers' methods

Zelda J, Southport PR8:
2 1/2 times 5 is a half of 25, which is12 1/2.
So 2 1/2 times 1 1/4 is a quarter of 12 1/2, which is 3 1/8.

Sally T, Stone ST15:
5 is halved once to get 2 1/2.
5 is halved twice to get 1 1/4.
So I halved 25 three times to get 3 1/8.