Basic Math Examples

$2$ , $4$ , $6$ , $8$ , $10$ , $12$ , $14$ , $16$ , $18$ , $20$ , $22$ , $24$

Step 1

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

$\frac{2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Step 2

Cancel the common factor of $2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24$ and $12$ .

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Factor $2$ out of $2$ .

$\frac{2 (1) + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $4$ .

$\frac{2 \cdot 1 + 2 \cdot 2 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot 1 + 2 \cdot 2$ .

$\frac{2 \cdot (1 + 2) + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $6$ .

$\frac{2 \cdot (1 + 2) + 2 (3) + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2) + 2 (3)$ .

$\frac{2 \cdot (1 + 2 + 3) + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $8$ .

$\frac{2 \cdot (1 + 2 + 3) + 2 (4) + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3) + 2 (4)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4) + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $10$ .

$\frac{2 \cdot (1 + 2 + 3 + 4) + 2 (5) + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4) + 2 (5)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5) + 12 + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $12$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5) + 2 (6) + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5) + 2 (6)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6) + 14 + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $14$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6) + 2 (7) + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6) + 2 (7)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7) + 16 + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $16$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7) + 2 (8) + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7) + 2 (8)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8) + 18 + 20 + 22 + 24}{12}$

Factor $2$ out of $18$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8) + 2 (9) + 20 + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8) + 2 (9)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) + 20 + 22 + 24}{12}$

Factor $2$ out of $20$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) + 2 (10) + 22 + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) + 2 (10)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10) + 22 + 24}{12}$

Factor $2$ out of $22$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10) + 2 (11) + 24}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10) + 2 (11)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11) + 24}{12}$

Factor $2$ out of $24$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11) + 2 (12)}{12}$

Factor $2$ out of $2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11) + 2 (12)$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)}{12}$

Cancel the common factors.

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Factor $2$ out of $12$ .

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)}{2 (6)}$

Cancel the common factor.

$\frac{2 \cdot (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)}{2 \cdot 6}$

Rewrite the expression.

$\frac{1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Step 3

Simplify the numerator.

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Add $1$ and $2$ .

$\frac{3 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Add $3$ and $3$ .

$\frac{6 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Add $6$ and $4$ .

$\frac{10 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Add $10$ and $5$ .

$\frac{15 + 6 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Add $15$ and $6$ .

$\frac{21 + 7 + 8 + 9 + 10 + 11 + 12}{6}$

Add $21$ and $7$ .

$\frac{28 + 8 + 9 + 10 + 11 + 12}{6}$

Add $28$ and $8$ .

$\frac{36 + 9 + 10 + 11 + 12}{6}$

Add $36$ and $9$ .

$\frac{45 + 10 + 11 + 12}{6}$

Add $45$ and $10$ .

$\frac{55 + 11 + 12}{6}$

Add $55$ and $11$ .

$\frac{66 + 12}{6}$

Add $66$ and $12$ .

$\frac{78}{6}$

Step 4

Divide $78$ by $6$ .

$13$

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