1cm=10mm 1m=100cm 1km=1000m
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10 mm = 1 cm 16 mm = 1 and 6/10 cm = 1 and 3/5 cm = 1.6 cm
As 1 dm = 100 mm and as 1 cm = 10 mm there are 0.1 dm in 1 cm
Covert to the same units then a comparison can be made, The centi- prefix means one hundredth (1/100 = 0,.01) → 1 cm = 1/100 m → 10 cm = 10 × 1/100 m = 1/10 m = 0.1 m The milli- prefix means one thousandth (1/1000 = 0.001) → 1 mm = 1/1000 m → 1000 mm = 1000 × 1/1000 m = 1 m 0.1 m ≠ 1 m → 10 cm ≠ 1000 mm No. 10 cm does not equal 1000 mm. ------------------------------------------------------- 1 cm = 1/100 m → 100 cm = 100 × 1/100 m = 1 m → 100 cm = 1000 mm (from above 1000 mm = 1 m) → 1 cm = 10 mm → 10 cm = 10 × 10 m = 100 mm
1 centimeter = 10 millimeters, so 16 cm = 10*16 mm = 160 mm.
10 mm = 1 cm so 305 mm = 305/10 = 30.5 cm. Simple!