Basic Math Examples

$67$ , $68$ , $81$ , $86$ , $77$ , $88$ , $69$ , $78$ , $84$ , $76$ , $67$ , $61$ , $61$ , $87$ , $75$

Step 1

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

$\frac{67 + 68 + 81 + 86 + 77 + 88 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2

Simplify the numerator.

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Step 2.1

Add $67$ and $68$ .

$\frac{135 + 81 + 86 + 77 + 88 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.2

Add $135$ and $81$ .

$\frac{216 + 86 + 77 + 88 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.3

Add $216$ and $86$ .

$\frac{302 + 77 + 88 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.4

Add $302$ and $77$ .

$\frac{379 + 88 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.5

Add $379$ and $88$ .

$\frac{467 + 69 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.6

Add $467$ and $69$ .

$\frac{536 + 78 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.7

Add $536$ and $78$ .

$\frac{614 + 84 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.8

Add $614$ and $84$ .

$\frac{698 + 76 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.9

Add $698$ and $76$ .

$\frac{774 + 67 + 61 + 61 + 87 + 75}{15}$

Step 2.10

Add $774$ and $67$ .

$\frac{841 + 61 + 61 + 87 + 75}{15}$

Step 2.11

Add $841$ and $61$ .

$\frac{902 + 61 + 87 + 75}{15}$

Step 2.12

Add $902$ and $61$ .

$\frac{963 + 87 + 75}{15}$

Step 2.13

Add $963$ and $87$ .

$\frac{1050 + 75}{15}$

Step 2.14

Add $1050$ and $75$ .

$\frac{1125}{15}$

Step 3

Divide $1125$ by $15$ .

$75$