Pre-Algebra Examples

$1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9$

Step 1

Add $1$ and $2$ .

$3 + 3 + 4 + 5 + 6 + 7 + 8 + 9$

Step 2

Add $3$ and $3$ .

$6 + 4 + 5 + 6 + 7 + 8 + 9$

Step 3

Add $6$ and $4$ .

$10 + 5 + 6 + 7 + 8 + 9$

Step 4

Add $10$ and $5$ .

$15 + 6 + 7 + 8 + 9$

Step 5

Add $15$ and $6$ .

$21 + 7 + 8 + 9$

Step 6

Add $21$ and $7$ .

$28 + 8 + 9$

Step 7

Add $28$ and $8$ .

$36 + 9$

Step 8

Add $36$ and $9$ .

$45$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$