化成最简整数比500cm :12km= 3.2cm :0.64km= 2cm:40km=2.5cm:7.5km
化成最简整数比
500cm :12km= 3.2cm :0.64km= 2cm:40km=
2.5cm:7.5km= 0.16cm:200m= 4.5cm:8000m= 100cm:2km= 5cm:80m= 150cm:4500m=
3cm:120000m= 2cm:50km= 5mm:1km=
40m:50cm= 75dm:2.5cm= 80km:16cm=
0.5m:2cm= 600m:3cm= 7000mm:3.5cm=
800dm:4mm= 75mm:0.15km=