Rule: "rounded to 1 decimal place" means look at the hundredths digit. >= 5 round up, <= 4 round down.

Capacity	=	1.25 litres
Look at the hundredths digit: 5. Since 5 >= 5, round up. The tenths digit increases from 2 to 3.
Rounded to 1 d.p.	=	1.3 litres