10 dm refers to 10 decimetres. 10 decimetres make up one metre. 10 decimetres is greater than 90 centimetres by 10 centimetres. 90 centimetres would convert to 9 decimetres.
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1 dm = 10 cm 0.9 dm = 9 cm = 90 mm
1 dm = 10 cm so 7.5 dm/90 cm = 75 cm / 9 cm = 75/9 = 25/3
90 cm is 9 decimeters.
1 dm = 10 cm so 20 dm = 20*10 = 200 cm. Simple!1 dm = 10 cm so 20 dm = 20*10 = 200 cm. Simple!1 dm = 10 cm so 20 dm = 20*10 = 200 cm. Simple!1 dm = 10 cm so 20 dm = 20*10 = 200 cm. Simple!
10 cm in 1 dm