look at a number line.
The number farthest to the left is the smallest, so
-8.2 <---- smallest
etc
What is this from least to greatest
-8.2,0.4,-2 1/2,2.4
I got 0.4,-2 1/2,2.4.-8.2
2 answers
you have (almost) listed them in order of distance from zero, but smallest means farthest to the left.
And even then, 2.4 is closer than 2 1/2
And even then, 2.4 is closer than 2 1/2