The range is the difference between the largest and smallest numbers in the data set.

The largest number is:

The smallest number is: 

Subtract these numbers. Be sure to enclose the smallest number with parentheses.

Rewrite both numbers with the least common denominator.

The answer is: 

The range is the difference between the largest and smallest numbers.

Identify the largest and smallest numbers in the set.

The largest number is 9.

The smallest number is negative nine.

Subtract both numbers. Be sure to enclose the negative number with a parentheses.

The answer is:  

The range is the difference between the largest and lowest numbers.

The highest number is three.

The lowest number is:  

Subtract these numbers.  Be sure to enclose the negative fraction in parentheses.

The range is:  

Convert all irrational numbers in the set to a rounded decimal to determine which numbers are the highest and lowest numbers.

The range is the difference of the highest and lowest numbers.

The highest number is  and the lowest number is .

Subtract these numbers.

The answer is:  

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

The highest number is nine.  The lowest number is negative nine.

Subtract both numbers.

The range is:  

The range is the difference between the highest and lowest numbers in the dataset.

The highest number is:  

The lowest number is:  

Subtract both numbers.  Remember that since we are subtracting a quantity, parentheses around the negative number are necessary.

The range is:  

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

The lowest number is .

To determine the highest numbers out of the fractions, we will need to change the fractions to a common denominator of 21 and compare the numerators.

We can see that the highest number is:   or 

Subtract the highest number with the smallest number.  Remember to enclose the negative number with parentheses.

The range is:  

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

The highest number is .

The lowest number is negative five.

Subtract both numbers.  Be sure to enclose the negative number in parentheses.

The answer is:  

Put the values in numerical order:

9, 10, 12, 13, 16, 18, 19, 19, 21, 22

Subtract the lowest value from the highest value to find your range:

In order to isolate the variable, we need to remove the coefficient. Since the operation between  and  is multiplication, we may want to divide both sides of the inequality by . Although this is a valid step, in order to simplify matters, instead of dividing by , we can multiplying by .

(Note: dividing by  is exactly the same as multplying by the reciprocal, .) 

Thus,

 and after multiplying and simplifying, we obtain .