# math

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Convert --→ 678,000 cm = ____ km.

Choose the best answer from the options below:
A 5.78 km
B 6.78 km
C 67.8 km
D 678 km

• math -

1 m = 100 cm:
To convert cm to m, divide by a hundred (or move the decimal point two places to the left).

1 km = 1000 m:
To convert m to km, divide by a 1000, or move the decimal point three places to the left.

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