Basic Math Examples

$85$ ,

$89$ ,

$80$ ,

$73$ ,

$90$

Step 1

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

$\frac{85 + 89 + 80 + 73 + 90}{5}$

Step 2

Simplify the numerator.

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Step 2.1

Add

$85$ and

$89$ .

$\frac{174 + 80 + 73 + 90}{5}$

Step 2.2

Add

$174$ and

$80$ .

$\frac{254 + 73 + 90}{5}$

Step 2.3

Add

$254$ and

$73$ .

$\frac{327 + 90}{5}$

Step 2.4

Add

$327$ and

$90$ .

$\frac{417}{5}$

Step 3

Divide.

$83.4$