Before ordering these numbers from least to greatest, it would be easiest to convert the fraction to a number or decimal.
8 / 2 = 4, which means the fraction 8/2 is equal to 4.
Now the numbers are -0.5, 12, 4, 3, and -7.
Negative numbers are lower than positive numbers.
The higher value of the number next to a negative sign, the lower the number is. (For example, -2 is less than -1.)
The higher a positive number, the greater its value, so the higher it is.
-7 is less than -0.5.
These are the only negative numbers, so we can conclude -7 is the lowest number and -0.5 is the second lowest.
12 is greater than 4, which is greater than 3.
This means that 12 is the highest number in this set, 4 is the second highest, and 3 is the third highest.
Now we can put the numbers in order.
From greatest to least, the numbers are:
12, 4, 3, -0.5, -7.
Now we can convert the 4 back to its fraction form as it appears in the number set as 8/2.
The final answer is 12, 8/2, 3, -0.5, -7.
Hope this helps!