Basic Math Examples

$12 \cdot 13$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

$3$ by

$2$ . Place the result in the next column in the result line. There is one result line for each digit in

$13$ .


	$1$	$2$
$⨯$	$1$	$3$
		$6$

Step 1.2

Multiply

$3$ by

$1$ . Place the result in the next column in the result line. There is one result line for each digit in

$13$ .


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$

Step 1.3

Multiply

$1$ by

$2$ . Place the result in the next column in the result line. There is one result line for each digit in

$13$ .


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
	$2$

Step 1.4

Multiply

$1$ by

$1$ . Place the result in the next column in the result line. There is one result line for each digit in

$13$ .


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
$1$	$2$

Step 1.5

Add the numbers in each column. In this case, add

$6 + 0$ , then place the

$6$ in the result line.


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
$1$	$2$
		$6$

Step 1.6

Add the numbers in each column. In this case, add

$3 + 2$ , then place the

$5$ in the result line.


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
$1$	$2$
	$5$	$6$

Step 1.7

Add the numbers in each column. In this case, add

$0 + 1$ , then place the

$1$ in the result line.


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
$1$	$2$
$1$	$5$	$6$


	$1$	$2$
$⨯$	$1$	$3$
	$3$	$6$
$1$	$2$
$1$	$5$	$6$

Step 2

The result of

$12 \cdot 13$ is

$156$ .

$156$