Basic Math Examples

$75$ , $72$ , $77$ , $80$ , $87$ , $82$ , $79$ , $80$ , $75$ , $82$

Step 1

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

$\frac{75 + 72 + 77 + 80 + 87 + 82 + 79 + 80 + 75 + 82}{10}$

Step 2

Simplify the numerator.

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Step 2.1

Add $75$ and $72$ .

$\frac{147 + 77 + 80 + 87 + 82 + 79 + 80 + 75 + 82}{10}$

Step 2.2

Add $147$ and $77$ .

$\frac{224 + 80 + 87 + 82 + 79 + 80 + 75 + 82}{10}$

Step 2.3

Add $224$ and $80$ .

$\frac{304 + 87 + 82 + 79 + 80 + 75 + 82}{10}$

Step 2.4

Add $304$ and $87$ .

$\frac{391 + 82 + 79 + 80 + 75 + 82}{10}$

Step 2.5

Add $391$ and $82$ .

$\frac{473 + 79 + 80 + 75 + 82}{10}$

Step 2.6

Add $473$ and $79$ .

$\frac{552 + 80 + 75 + 82}{10}$

Step 2.7

Add $552$ and $80$ .

$\frac{632 + 75 + 82}{10}$

Step 2.8

Add $632$ and $75$ .

$\frac{707 + 82}{10}$

Step 2.9

Add $707$ and $82$ .

$\frac{789}{10}$

Step 3

Divide.

$78.9$