For the following numbers, which is the CORRECT order of the variables from smallest to largest?
P = 0.0002
Q = -0.02
R = 0.2
S = -200
T = 0.5

To solve these questions, we need to put the numbers in increasing order. This will allow you to easily compare which numbers are larger or smaller.
Then place them in order from least to greatest (like you would see on a number line):
-200
-0.02
0.0002
0.2
0.5
S
Q
P
R
T