Which is bigger 5.8 x 10^7 km or 2.5 x 10 - 3 cm

SHOW YOUR WORK!

You want to have the same units when you're converting so you can see which one is bigger. I'm putting it in Km.

First you change it to meters.

2.5x10^-3 cm x 1m/100cm = 2.5x10^-5 m

Then kilometers.

2.5x10^-5 m x 1Km/1000m = 2.5x10^-8 Km

Therefore 5.8x10^7 km is bigger than 2.5x10^-3