Basic Math Examples

$1$ , $8$ , $9$ , $25$ , $64$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{1 + 8 + 9 + 25 + 64}{5}$

Step 2

Simplify the numerator.

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Step 2.1

Add $1$ and $8$ .

$\frac{9 + 9 + 25 + 64}{5}$

Step 2.2

Add $9$ and $9$ .

$\frac{18 + 25 + 64}{5}$

Step 2.3

Add $18$ and $25$ .

$\frac{43 + 64}{5}$

Step 2.4

Add $43$ and $64$ .

$\frac{107}{5}$

Step 3

Divide.

$21.4$