If the 864 refers to meters, then it's already rounded to the nearest meter. If it refers to something else, you need to tell us what it is.
2.345 m = 234.5 cm rounds to 230 cm = 2.3 m
4.5 m
5 m
It is 57.5 mm.
2 m
If the 864 refers to meters, then it's already rounded to the nearest meter. If it refers to something else, you need to tell us what it is.
4 m
4.78 m to the nearest m is 5 m.
864 m = 0.864 kmTo convert from m to km, divide by 1000.
1 m = 100 cm so 864
85765.47944 m to the nearest metre is 85765 m since the tenths digit is less than 5 it rounds down. However: 85765.47944 CENTImetres *IS* 858 metres to the nearest metre. ie 85765.47944 cm to the nearest m: 100 cm = 1 m → 85765.47944 cm = 85765.47944 ÷ 100 m = 857.6547944 m → 858 m to the nearest metre as the tenths digit is 5 or more it rounds up.
2.345 m = 234.5 cm rounds to 230 cm = 2.3 m
4.5 m
5 m
6.42 m and 5.97 m( both to the nearest cm)
1 m = 100 cm so 5666 m = 566600 cm. Simple!