Basic Math Examples

9 \cdot 12

$9 \cdot 12$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

2

$2$ by

9

$9$ . Place the ones digit

(8)

$(8)$ in the result line and carry the tens digit

(1)

$(1)$ . There is one result line for each digit in

12

$12$ .


		$9$ $9$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$1$ $1$	$8$ $8$

Step 1.2

Multiply

1

$1$ by

9

$9$ . Place the result in the next column in the result line. There is one result line for each digit in

12

$12$ .


		$9$ $9$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$1$ $1$	$8$ $8$
	$9$ $9$

Step 1.3

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

8 + 0

$8 + 0$ , then place the

8

$8$ in the result line.


		$9$ $9$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$1$ $1$	$8$ $8$
	$9$ $9$
		$8$ $8$

Step 1.4

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

1 + 9

$1 + 9$ , then place the

0

$0$ in the result line and carry the

1

$1$ .


		$9$ $9$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$1$ $1$	$8$ $8$
	$9$ $9$
$1$ $1$	$0$ $0$	$8$ $8$


		$9$ $9$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$1$ $1$	$8$ $8$
	$9$ $9$
$1$ $1$	$0$ $0$	$8$ $8$

Step 2

The result of

9 \cdot 12

$9 \cdot 12$ is

108

$108$ .

108

$108$

$9 \cdot 12$

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