What direction do you move the decimal from kilometers to millimeters?

Answer 1

If you're 'moving the decimal point', you're probably trying to convert a kilometer

distance into the same distance expressed in millimeters. Since millimeters are

smaller, you should expect to wind up with a lot more of them ... roughly a million

times as many as the number of kilometers. In order to wind up with a bigger

number, you need to move the decimal point to the right.

1 km = 1 000 m = 1 x 103 m; 1 m = 1 000 mm = 1 x 103 mm

1 m = 0.001 km = 1 x 10-3 km; 1 mm = 0.001 m = 1 x 10-3 m

Now, 1 km = 1000 m = 1 000 (1 000 mm) = 1 000 000 mm = 1x 106 mm

The inverse relation:

1 mm = 0.001 m = 0.001 (0.001 km) = 0.000001 km = 1 x 10-6 km

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