Basic Math Examples

17 \cdot 12

$17 \cdot 12$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

2

$2$ by

7

$7$ . Place the ones digit

(4)

$(4)$ in the result line and carry the tens digit

(1)

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

12

$12$ .

	$1$ $1$
	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
		$4$ $4$

Step 1.2

Multiply

2

$2$ 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

12

$12$ .


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$

Step 1.3

Multiply

1

$1$ by

7

$7$ . Place the result in the next column in the result line. There is one result line for each digit in

12

$12$ .


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
	$7$ $7$

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

12

$12$ .


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
$1$ $1$	$7$ $7$

Step 1.5

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

4 + 0

$4 + 0$ , then place the

4

$4$ in the result line.


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
$1$ $1$	$7$ $7$
		$4$ $4$

Step 1.6

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

3 + 7

$3 + 7$ , then place the

0

$0$ in the result line and carry the

1

$1$ .


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
$1$ $1$	$7$ $7$
	$0$ $0$	$4$ $4$

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.


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
$1$ $1$	$7$ $7$
$2$ $2$	$0$ $0$	$4$ $4$


	$1$ $1$	$7$ $7$
$\times$ $⨯$	$1$ $1$	$2$ $2$
	$3$ $3$	$4$ $4$
$1$ $1$	$7$ $7$
$2$ $2$	$0$ $0$	$4$ $4$

Step 2

The result of

17 \cdot 12

$17 \cdot 12$ is

204

$204$ .

204

$204$