Basic Math Examples

$85$ , $92$ , $67$ , $81$ , $90$ , $76$ , $94$ , $85$ , $56$ , $79$

Step 1

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

$\frac{85 + 92 + 67 + 81 + 90 + 76 + 94 + 85 + 56 + 79}{10}$

Step 2

Simplify the numerator.

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Step 2.1

Add $85$ and $92$ .

$\frac{177 + 67 + 81 + 90 + 76 + 94 + 85 + 56 + 79}{10}$

Step 2.2

Add $177$ and $67$ .

$\frac{244 + 81 + 90 + 76 + 94 + 85 + 56 + 79}{10}$

Step 2.3

Add $244$ and $81$ .

$\frac{325 + 90 + 76 + 94 + 85 + 56 + 79}{10}$

Step 2.4

Add $325$ and $90$ .

$\frac{415 + 76 + 94 + 85 + 56 + 79}{10}$

Step 2.5

Add $415$ and $76$ .

$\frac{491 + 94 + 85 + 56 + 79}{10}$

Step 2.6

Add $491$ and $94$ .

$\frac{585 + 85 + 56 + 79}{10}$

Step 2.7

Add $585$ and $85$ .

$\frac{670 + 56 + 79}{10}$

Step 2.8

Add $670$ and $56$ .

$\frac{726 + 79}{10}$

Step 2.9

Add $726$ and $79$ .

$\frac{805}{10}$

Step 3

Cancel the common factor of $805$ and $10$ .

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Step 3.1

Factor $5$ out of $805$ .

$\frac{5 (161)}{10}$

Step 3.2

Cancel the common factors.

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Step 3.2.1

Factor $5$ out of $10$ .

$\frac{5 \cdot 161}{5 \cdot 2}$

Step 3.2.2

Cancel the common factor.

$\frac{5 \cdot 161}{5 \cdot 2}$

Step 3.2.3

Rewrite the expression.

$\frac{161}{2}$

Step 4

Divide.

$80.5$