Basic Math Examples

24 \cdot 15

$24 \cdot 15$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

5

$5$ by

4

$4$ . Place the ones digit

(0)

$(0)$ in the result line and carry the tens digit

(2)

$(2)$ . There is one result line for each digit in

15

$15$ .

	$2$ $2$
	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
		$0$ $0$

Step 1.2

Multiply

5

$5$ by

2

$2$ and add the carried

2

$2$ . Place the ones digit

(2)

$(2)$ in the result line and carry the tens digit

(1)

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

15

$15$ .


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$

Step 1.3

Multiply

1

$1$ by

4

$4$ . Place the result in the next column in the result line. There is one result line for each digit in

15

$15$ .


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
	$4$ $4$

Step 1.4

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

15

$15$ .


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
$2$ $2$	$4$ $4$

Step 1.5

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

0 + 0

$0 + 0$ , then place the

0

$0$ in the result line.


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
$2$ $2$	$4$ $4$
		$0$ $0$

Step 1.6

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

2 + 4

$2 + 4$ , then place the

6

$6$ in the result line.


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
$2$ $2$	$4$ $4$
	$6$ $6$	$0$ $0$

Step 1.7

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

1 + 2

$1 + 2$ , then place the

3

$3$ in the result line.


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
$2$ $2$	$4$ $4$
$3$ $3$	$6$ $6$	$0$ $0$


	$2$ $2$	$4$ $4$
$\times$ $⨯$	$1$ $1$	$5$ $5$
$1$ $1$	$2$ $2$	$0$ $0$
$2$ $2$	$4$ $4$
$3$ $3$	$6$ $6$	$0$ $0$

Step 2

The result of

24 \cdot 15

$24 \cdot 15$ is

360

$360$ .

360

$360$