Basic Math Examples

$- 3$ , $0.8 (- 5 + 4.2)$

Step 1

Add $- 5$ and $4.2$ .

$- 3, 0.8 \cdot - 0.8$

Step 2

Multiply $0.8$ by $- 0.8$ .

$- 3, - 0.64$

Step 3

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

$\frac{- 3 - 0.64}{2}$

Step 4

Subtract $0.64$ from $- 3$ .

$\frac{- 3.64}{2}$

Step 5

Divide $- 3.64$ by $2$ .

$- 1.82$

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.

$- 1.8$