Basic Math Examples

$2.1 + 2.3 + 1 + 0.9 + 1.5 + 5.6 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 1

Add $2.1$ and $2.3$ .

$4.4 + 1 + 0.9 + 1.5 + 5.6 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 2

Add $4.4$ and $1$ .

$5.4 + 0.9 + 1.5 + 5.6 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 3

Add $5.4$ and $0.9$ .

$6.3 + 1.5 + 5.6 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 4

Add $6.3$ and $1.5$ .

$7.8 + 5.6 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 5

Add $7.8$ and $5.6$ .

$13.4 + 18.3 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 6

Add $13.4$ and $18.3$ .

$31.7 + 18.9 + 15.1 + 0.6 + 0.3 + 1.8$

Step 7

Add $31.7$ and $18.9$ .

$50.6 + 15.1 + 0.6 + 0.3 + 1.8$

Step 8

Add $50.6$ and $15.1$ .

$65.7 + 0.6 + 0.3 + 1.8$

Step 9

Add $65.7$ and $0.6$ .

$66.3 + 0.3 + 1.8$

Step 10

Add $66.3$ and $0.3$ .

$66.6 + 1.8$

Step 11

Add $66.6$ and $1.8$ .

$68.4$

Step 12

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

$\frac{68.4}{1}$

Step 13

Divide $68.4$ by $1$ .

$68.4$

Step 14

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.

$68.4$