Pré-álgebra Exemplos

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

Etapa 1

Some $1$ e $2$ .

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

Etapa 2

Some $3$ e $3$ .

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

Etapa 3

Some $6$ e $4$ .

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

Etapa 4

Some $10$ e $5$ .

$15 + 6 + 7 + 8 + 9$

Etapa 5

Some $15$ e $6$ .

$21 + 7 + 8 + 9$

Etapa 6

Some $21$ e $7$ .

$28 + 8 + 9$

Etapa 7

Some $28$ e $8$ .

$36 + 9$

Etapa 8

Some $36$ e $9$ .

$45$

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