What two numbers have an absolute value of 21?

To find the two numbers that have an absolute value of a number, such as 21, picture a horizontal number line where you have postive numbers on the right side of 0 and negative numbers on the left side of 0.

The two numbers that have 21 as an absolute value are the numbers you get when you go 21 units from the right and left of the 0 on the number line.

When you go 21 units to the right on the positive side, you get 21 and when you go 21 units to the left on the negative side you get -21.

Therefore, the answer to "What two numbers have an absolute value of 21?" is: 21 and -21.

The absolute value of 21 is 21 and the absolute value of -21 is also 21. Here it is expressed mathematically with vertical lines that we call bars:

|21| = 21
|-21| = 21

For future reference, remember that the two numbers that have an absolute value of x are x and -x.

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What two numbers have an absolute value of 22?
Here is the next absolute value question on our list that we explained and answered.