6. Order the following from smallest to largest:

a.
b. 28, , , 43, 54, , , 12
-36 -19 -47 -58
-4, -5, 3, 0, 9, 2, -9, 5

Start with -58 and end with 54.

-58,-47,-36,-19,-9,-5,-4,0,2,3,5,9,12,28,43,54

To order the given numbers from smallest to largest, we need to compare the values and arrange them accordingly. Let's start by looking at the first set of numbers:

a. -36, -19, -47, -58

To order these numbers, we'll compare them and arrange them from smallest to largest:

-58, -47, -36, -19

Next, let's move on to the second set of numbers:

b. 28, __, __, 43, 54, __, __, 12

-4, -5, 3, 0, 9, 2, -9, 5

We can fill in the missing numbers by comparing the given values and placing them in the correct position:

-9, -5, -4, 0, 2, 3, 5, 9

Now we can combine the sorted sets and order them:

-58, -47, -36, -19, -9, -5, -4, 0, 2, 3, 5, 9, 12, 28, 43, 54

From smallest to largest, the ordered list would be: -58, -47, -36, -19, -9, -5, -4, 0, 2, 3, 5, 9, 12, 28, 43, 54.