The input area for your Calculator -- the area just above the digits and buttons -- will split into a top and bottom field ...

This represents converting a larger unit into a smaller unit. Multiply the distance (3 metres) by the conversion factor (100). 3 × 100 = 300. 3 m = 300 cm. Image caption, Work out what 650 cm is ...

Multiply the number of centimetres by the conversion factor. Check the answer - should it be smaller or larger than the original number? Units of length can be converted between imperial and ...