Basic Math Examples

27 \cdot 40

$27 \cdot 40$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

0

$0$ by

7

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

40

$40$ .


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

Step 1.2

Multiply

0

$0$ by

2

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

40

$40$ .


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

Step 1.3

Multiply

4

$4$ by

7

$7$ . Place the ones digit

(8)

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

(2)

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

40

$40$ .

	$2$ $2$
	$2$ $2$	$7$ $7$
$\times$ $⨯$	$4$ $4$	$0$ $0$
	$0$ $0$	$0$ $0$
	$8$ $8$

Step 1.4

Multiply

4

$4$ by

2

$2$ and add the carried

2

$2$ . Place the ones digit

(0)

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

(1)

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

40

$40$ .


		$2$ $2$	$7$ $7$
	$\times$ $⨯$	$4$ $4$	$0$ $0$
		$0$ $0$	$0$ $0$
$1$ $1$	$0$ $0$	$8$ $8$

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.


		$2$ $2$	$7$ $7$
	$\times$ $⨯$	$4$ $4$	$0$ $0$
		$0$ $0$	$0$ $0$
$1$ $1$	$0$ $0$	$8$ $8$
			$0$ $0$

Step 1.6

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

0 + 8

$0 + 8$ , then place the

8

$8$ in the result line.


		$2$ $2$	$7$ $7$
	$\times$ $⨯$	$4$ $4$	$0$ $0$
		$0$ $0$	$0$ $0$
$1$ $1$	$0$ $0$	$8$ $8$
		$8$	$0$

Step 1.7

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

$0 + 0$ , then place the

$0$ in the result line.


		$2$	$7$
	$⨯$	$4$	$0$
		$0$	$0$
$1$	$0$	$8$
	$0$	$8$	$0$

Step 1.8

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

$0 + 1$ , then place the

$1$ in the result line.


		$2$	$7$
	$⨯$	$4$	$0$
		$0$	$0$
$1$	$0$	$8$
$1$	$0$	$8$	$0$


		$2$	$7$
	$⨯$	$4$	$0$
		$0$	$0$
$1$	$0$	$8$
$1$	$0$	$8$	$0$

Step 2

The result of

$27 \cdot 40$ is

$1080$ .

$1080$