Q: Which is longer 400mm or 4dm?

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1125

It is 0.7 or 7/10.

There are 10 mm in 1 cm. Therefore by moving the decimal place over by one 400mm equals 40 cm.So 51 is greater than 40, yes 51 cm is greater than 400mm.

800mm

40cm

Related questions

90cm is the longest because 400mm = 40cm and 0.5m = 50cm

4dm=400cm that's what i think but I'm not so sure.

They're the same amount because 10cm= 1dm and 10x4=40 and 1x4=4 and 4dm= 40cm

1125

40

It is 0.7 or 7/10.

400mm = 0.4m 90cm = 0.9m 0.5m = 0.5m 0.9m > 0.5m > 0.4m, so 90cm is the longest.

600mm * 400mm = 0.6m * 0.4m = 0.24 sq metres

Neither - they are the same measurement.

Well a mm is half a cm so i think they are the same equivalent.

2 in

40cm is 400mm