Answer :

The range is the difference between the highest and lowest value. 

For example: Find the range of the number set, 1, 8, 5, 10, 5, 4. 
Here, the highest value is 10.
Lowest value is 1.
Therefore, 10 - 9 = 8.
8 is our range. 
The range is like the difference between the highest and the lowest numbers. To find the range you just subtract the min from the max and that's your range. I attached a file to help you remember. GOOD LUCK! (;
View image Аноним
View image Аноним