Basic Math Examples

$39$ , $469.2 - 39$ , $7.2$

Step 1

Subtract $39$ from $469.2$ .

$39, 430.2, 7.2$

Step 2

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

$\frac{39 + 430.2 + 7.2}{3}$

Step 3

Simplify the numerator.

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Step 3.1

Add $39$ and $430.2$ .

$\frac{469.2 + 7.2}{3}$

Step 3.2

Add $469.2$ and $7.2$ .

$\frac{476.4}{3}$

Step 4

Divide $476.4$ by $3$ .

$158.8$

Step 5

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.

$158.8$