4 cm ...mm, 2km...m ,6cm...mm, 4000mm...m ,2000m...km ,60mmm...cm, 1m+2dm+3cm , 7dmm+8cm+9mm 4m+5cm
2 câu trả lời
4cm= 40 cm
2km= 2000 m
6cm= 60 mm
4000mm= 4m
2000m= 2km
60mm= 6cm
1m+2dm+3cm = 100cm + 20cm + 3cm = 123 cm
7dm+8cm+9mm= 700mm + 80mm + 9mm = 789mm
4m+5cm = 400cm + 5cm = 405cm
4 cm = 40 mm
2km = 2000m
6cm = 60mm
4000mm = 4m
2000m = 2km
60mm = 6cm
1m+2dm+3cm = 100cm + 20cm + 3cm = 123cm
7dm+8cm+9mm = 700mm + 80mm + 9mm = 789mm
4m+5cm = 400cm + 5cm = 405cm
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