multiply from cm to mm, the answer is 25mm. Think about it this way, the millimetre is smaller than a centimetre, so your number has to be bigger than the number in centimetres
1 cm = 10mm Multiply.
Divide... by 10
divide
Multiply by 10
To find the value of 2.5cm in mm, you would multiply by 10.
1 cm = 10mm Multiply.
divide
Divide... by 10
Multiply cm by 10 to get mm. Divide mm by 10 to get cm.
Multiply by 10
40 mm = 4 cm 1 mm = 1/10 of a cm Multiply 40 mm*(1/10 * 1 cm) = 4 cm
You multiply (by 10) when changing from centimetres/cm to millimetres/mm.
To find the value of 2.5cm in mm, you would multiply by 10.
19 mm. To convert cm to mm multiply by 10, to convert mm to cm divide by 10.
Divide (by 100) 100 cm = 1 m 50 cm = 0.5 m and so on.
Generally you would multiply 10 mm = 1 cm 480 cm = 480 * (1 cm) = 480 * (1 cm) * (10 mm) / (1 cm) = 480 * (10 mm) = 4,800 mm
10 mm = 1 cm Divide