Basic Math Examples

12 \cdot 18

$12 \cdot 18$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

8

$8$ by

2

$2$ . Place the ones digit

(6)

$(6)$ in the result line and carry the tens digit

(1)

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

18

$18$ .

	$1$ $1$
	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
		$6$ $6$

Step 1.2

Multiply

8

$8$ by

1

$1$ and add the carried

1

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

18

$18$ .


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$

Step 1.3

Multiply

1

$1$ by

2

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

18

$18$ .


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
	$2$ $2$

Step 1.4

Multiply

1

$1$ by

1

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

18

$18$ .


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
$1$ $1$	$2$ $2$

Step 1.5

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

6 + 0

$6 + 0$ , then place the

6

$6$ in the result line.


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
$1$ $1$	$2$ $2$
		$6$ $6$

Step 1.6

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

9 + 2

$9 + 2$ , then place the

1

$1$ in the result line and carry the

1

$1$ .


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
$1$ $1$	$2$ $2$
	$1$ $1$	$6$ $6$

Step 1.7

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

0 + 1 + 1

$0 + 1 + 1$ , then place the

2

$2$ in the result line.


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
$1$ $1$	$2$ $2$
$2$ $2$	$1$ $1$	$6$ $6$


	$1$ $1$	$2$ $2$
$⨯$ $⨯$	$1$ $1$	$8$ $8$
	$9$ $9$	$6$ $6$
$1$ $1$	$2$ $2$
$2$ $2$	$1$ $1$	$6$ $6$

Step 2

The result of

12 \cdot 18

$12 \cdot 18$ is

216

$216$ .

216

$216$