3. Order these numbers from least to greatest.
   

The absolute value of -2.7 is 2.7. So we just need to compare that with zero: since 2.7 is greater than zero, the order from least to greatest is .

You could also visualize this on a number line. Picture 0 at the center and the numbers stretching out in both directions. The further you get from zero, the larger the absolute value! In this case, everything to the left of zero remains less than everything to the right.