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900mm < 0.09 km

Remember "milli" as 10^-3 (or 0.001) and "kilo" as 10^3 (or 1000).

To convert 900mm to km (so we can compare the values in the same unit; you can convert and then compare the values in mm as well), we can first convert millimeters (mm) to meters (m). Since we are converting a number to an equal value that is measured by a larger unit (km), the number is only going to appear smaller.

So: 900mm = 0.9m. Now we can use the "kilo," or 10^3, to convert from m to km. The number gets even smaller: 0.9m = 0.0009km.

And, we know that 0.0009km < 0.09km. So, 900mm < 0.09km.

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14y ago
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Q: Is 900 mm more than or less than 0.09 km?
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