Tiana surveyed the gas prices in 7 different cities. The prices were:
$5.00$2.00$4.00$2.00$2.00$3.00$5.00
What was the range of the gas prices?
To find the range, we need to subtract the lowest price from the highest price.
The lowest price is $2.00 and the highest price is $5.00.
So, the range of the gas prices is $5.00 - $2.00 = $<<5-2=3>>3. Answer: \boxed{3}.