Số?
1hm = ….. m 1m = …….. cm
1hm = ….. dam 1m = ….. dm
1dam = ….. m 1dm = …… cm
1km = ….. m 1cm = ….. mm
1hm = 100 m 1m = 100 cm
1hm = 10 dam 1m = 10 dm
1dam = 10 m 1dm = 10 cm
1km = 1000 m 1cm = 10 mm
-- Mod Toán lớp 3
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