Classic
Students progress at their own pace and you see a leaderboard and live results.
35cm = ________ mm
4米20厘米 = __________厘米
5080m = ____________km
9公里16米 = _____________公里
12.75km = __________m
83.3厘米 = ________厘米________毫米
0.65厘米 = ________毫米
40.4cm = __________m
3公里 12米 = ___________公里
6013m = _________km