Basic Math Examples

$2$ , $5$ , $7$ , $6$ , $4$ , $3$ , $8$ , $7$ , $4$ , $5$ , $7$ , $6$ , $3$ , $5$ , $4$ , $2$ , $4$ , $6$ , $3$ , $5$

Step 1

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

$\frac{2 + 5 + 7 + 6 + 4 + 3 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2

Simplify the numerator.

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Step 2.1

Add $2$ and $5$ .

$\frac{7 + 7 + 6 + 4 + 3 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.2

Add $7$ and $7$ .

$\frac{14 + 6 + 4 + 3 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.3

Add $14$ and $6$ .

$\frac{20 + 4 + 3 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.4

Add $20$ and $4$ .

$\frac{24 + 3 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.5

Add $24$ and $3$ .

$\frac{27 + 8 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.6

Add $27$ and $8$ .

$\frac{35 + 7 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.7

Add $35$ and $7$ .

$\frac{42 + 4 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.8

Add $42$ and $4$ .

$\frac{46 + 5 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.9

Add $46$ and $5$ .

$\frac{51 + 7 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.10

Add $51$ and $7$ .

$\frac{58 + 6 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.11

Add $58$ and $6$ .

$\frac{64 + 3 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.12

Add $64$ and $3$ .

$\frac{67 + 5 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.13

Add $67$ and $5$ .

$\frac{72 + 4 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.14

Add $72$ and $4$ .

$\frac{76 + 2 + 4 + 6 + 3 + 5}{20}$

Step 2.15

Add $76$ and $2$ .

$\frac{78 + 4 + 6 + 3 + 5}{20}$

Step 2.16

Add $78$ and $4$ .

$\frac{82 + 6 + 3 + 5}{20}$

Step 2.17

Add $82$ and $6$ .

$\frac{88 + 3 + 5}{20}$

Step 2.18

Add $88$ and $3$ .

$\frac{91 + 5}{20}$

Step 2.19

Add $91$ and $5$ .

$\frac{96}{20}$

Step 3

Cancel the common factor of $96$ and $20$ .

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Step 3.1

Factor $4$ out of $96$ .

$\frac{4 (24)}{20}$

Step 3.2

Cancel the common factors.

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Step 3.2.1

Factor $4$ out of $20$ .

$\frac{4 \cdot 24}{4 \cdot 5}$

Step 3.2.2

Cancel the common factor.

$\frac{4 \cdot 24}{4 \cdot 5}$

Step 3.2.3

Rewrite the expression.

$\frac{24}{5}$

Step 4

Divide.

$4.8$