100/1 metres.
It is 1/10.
89/100m or 0.89m
250cm - 1.5cm = 248.5
250cm add 2.8cm = 252.8
Convert to the same units, then the fraction can be simplified. The kilo- prefix means 1000 → 1 km = 1,000 m → 100m/1km = 100m/1000m = 1/10
100 m is a tenth of a kilometre.
2.5m
100/1000 = 1/10
2.5
4
about 98.4251968