Basic Math Examples

$25$ , $36$ , $38$ , $38$ , $39$ , $39$ , $40$ , $40$ , $40$ , $42$ , $42$ , $42$ , $45$ , $47$ , $47$

Step 1

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

$\frac{25 + 36 + 38 + 38 + 39 + 39 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2

Simplify the numerator.

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Step 2.1

Add $25$ and $36$ .

$\frac{61 + 38 + 38 + 39 + 39 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.2

Add $61$ and $38$ .

$\frac{99 + 38 + 39 + 39 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.3

Add $99$ and $38$ .

$\frac{137 + 39 + 39 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.4

Add $137$ and $39$ .

$\frac{176 + 39 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.5

Add $176$ and $39$ .

$\frac{215 + 40 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.6

Add $215$ and $40$ .

$\frac{255 + 40 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.7

Add $255$ and $40$ .

$\frac{295 + 40 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.8

Add $295$ and $40$ .

$\frac{335 + 42 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.9

Add $335$ and $42$ .

$\frac{377 + 42 + 42 + 45 + 47 + 47}{15}$

Step 2.10

Add $377$ and $42$ .

$\frac{419 + 42 + 45 + 47 + 47}{15}$

Step 2.11

Add $419$ and $42$ .

$\frac{461 + 45 + 47 + 47}{15}$

Step 2.12

Add $461$ and $45$ .

$\frac{506 + 47 + 47}{15}$

Step 2.13

Add $506$ and $47$ .

$\frac{553 + 47}{15}$

Step 2.14

Add $553$ and $47$ .

$\frac{600}{15}$

Step 3

Divide $600$ by $15$ .

$40$