Basic Math Examples

$2$ ,

$480 \div 31$

Step 1

Rewrite the division as a fraction.

$2, \frac{480}{31}$

Step 2

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

$\frac{2 + \frac{480}{31}}{2}$

Step 3

Cancel the common factor of

$2 + \frac{480}{31}$ and

$2$ .

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Step 3.1

Factor

$2$ out of

$2$ .

$\frac{2 \cdot 1 + \frac{480}{31}}{2}$

Step 3.2

Factor

$2$ out of

$\frac{480}{31}$ .

$\frac{2 \cdot 1 + 2 (\frac{240}{31})}{2}$

Step 3.3

Factor

$2$ out of

$2 \cdot 1 + 2 (\frac{240}{31})$ .

$\frac{2 \cdot (1 + \frac{240}{31})}{2}$

Step 3.4

Cancel the common factors.

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Step 3.4.1

Factor

$2$ out of

$2$ .

$\frac{2 \cdot (1 + \frac{240}{31})}{2 (1)}$

Step 3.4.2

Cancel the common factor.

$\frac{2 \cdot (1 + \frac{240}{31})}{2 \cdot 1}$

Step 3.4.3

Rewrite the expression.

$\frac{1 + \frac{240}{31}}{1}$

Step 3.4.4

Divide

$1 + \frac{240}{31}$ by

$1$ .

$1 + \frac{240}{31}$

Step 4

Simplify the expression.

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Step 4.1

Write

$1$ as a fraction with a common denominator.

$\frac{31}{31} + \frac{240}{31}$

Step 4.2

Combine the numerators over the common denominator.

$\frac{31 + 240}{31}$

Step 4.3

Add

$31$ and

$240$ .

$\frac{271}{31}$

Step 5

Divide.

$8.74193548$

Step 6

The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

$8.7$