Basic Math Examples

$285$ , $420$ , $345$ , $390$

Step 1

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

$\frac{285 + 420 + 345 + 390}{4}$

Step 2

Simplify the numerator.

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Step 2.1

Add $285$ and $420$ .

$\frac{705 + 345 + 390}{4}$

Step 2.2

Add $705$ and $345$ .

$\frac{1050 + 390}{4}$

Step 2.3

Add $1050$ and $390$ .

$\frac{1440}{4}$

Step 3

Divide $1440$ by $4$ .

$360$