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Please check these problems.

1. 92 X 10^3 km ---> dm
My answer: 9.2 X 10^8 dm

2. 5.52 X 10^8 g ---> kg
My answer: 5.52 X 10^11 kg

3. 8.66 X 10^-9 m ---> mm
My answer: 8.66 X 10^-12 mm

4. 1 um ---> m
My answer: 1 X 10^-6 m

Thanks.

1 and 4 are correct.
No so for 2 and 3.
2.There MUST be fewer kg than g and you have more than you started with.
3. You are going from m to mm. mm is a smaller unit; therefore, there MUST be more mm. You have less.

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