Since milli- means one thousandth, centi- means one hundredth and deci- means one tenth, a decimetre is exactly one tenth of a metre.
(It is also ten centimetres and also one hundred millimetres.)
1 m = 10 dm
8.4 dm
1 meter = 100 cm
15 dm equals 150cm
100 mm = 1 dm
1 dm is equal to 100 mm (as 1 dm = 10 cm 1 cm = 10 mm)
1000 millimeters are equal to 1 meter.
500 mm = 5 dm
70
36 cm (centimetres) = 3.6 dm (decimetres)
1 m = 10 dm, so 0.76 m = 7.6 dm
600