Final answer:
To order the average temperatures from greatest to least, arrange them as follows: 12°, 8°, 4°, -1°, -3°. Positive numbers are greater than negative numbers, so the sequence starts with the highest positive value and ends with the lowest negative value.
Step-by-step explanation:
We are tasked with ordering the given average temperatures for Greenland from greatest to least. The temperatures provided in the list are 12°, -3°, 8°, -1°, and 4°. To accomplish this, we simply need to arrange the numbers in descending order.
- 12°
- 8°
- 4°
- -1°
- -3°
The greatest temperature is 12°, and the least is -3°. Remember that in a set of numbers including both positive and negative values, positive numbers are always greater than negative numbers.