Basic Math Examples

$330$ , $170$ , $480$ , $220$

Step 1

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

$\frac{330 + 170 + 480 + 220}{4}$

Step 2

Cancel the common factor of $330 + 170 + 480 + 220$ and $4$ .

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Step 2.1

Factor $2$ out of $330$ .

$\frac{2 (165) + 170 + 480 + 220}{4}$

Step 2.2

Factor $2$ out of $170$ .

$\frac{2 \cdot 165 + 2 \cdot 85 + 480 + 220}{4}$

Step 2.3

Factor $2$ out of $2 \cdot 165 + 2 \cdot 85$ .

$\frac{2 \cdot (165 + 85) + 480 + 220}{4}$

Step 2.4

Factor $2$ out of $480$ .

$\frac{2 \cdot (165 + 85) + 2 (240) + 220}{4}$

Step 2.5

Factor $2$ out of $2 \cdot (165 + 85) + 2 (240)$ .

$\frac{2 \cdot (165 + 85 + 240) + 220}{4}$

Step 2.6

Factor $2$ out of $220$ .

$\frac{2 \cdot (165 + 85 + 240) + 2 (110)}{4}$

Step 2.7

Factor $2$ out of $2 \cdot (165 + 85 + 240) + 2 (110)$ .

$\frac{2 \cdot (165 + 85 + 240 + 110)}{4}$

Step 2.8

Cancel the common factors.

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Step 2.8.1

Factor $2$ out of $4$ .

$\frac{2 \cdot (165 + 85 + 240 + 110)}{2 (2)}$

Step 2.8.2

Cancel the common factor.

$\frac{2 \cdot (165 + 85 + 240 + 110)}{2 \cdot 2}$

Step 2.8.3

Rewrite the expression.

$\frac{165 + 85 + 240 + 110}{2}$

Step 3

Simplify the numerator.

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Step 3.1

Add $165$ and $85$ .

$\frac{250 + 240 + 110}{2}$

Step 3.2

Add $250$ and $240$ .

$\frac{490 + 110}{2}$

Step 3.3

Add $490$ and $110$ .

$\frac{600}{2}$

Step 4

Divide $600$ by $2$ .

$300$