Basic Math Examples

450 \cdot 80

$450 \cdot 80$

Step 1

Multiply using long multiplication.

Tap for more steps...

Step 1.1

Multiply

0

$0$ by

0

$0$ . Place the result in the next column in the result line. There is one result line for each digit in

80

$80$ .


	$4$ $4$	$5$ $5$	$0$ $0$
$\times$ $⨯$		$8$ $8$	$0$ $0$
			$0$ $0$

Step 1.2

Multiply

0

$0$ by

5

$5$ . Place the result in the next column in the result line. There is one result line for each digit in

80

$80$ .


	$4$ $4$	$5$ $5$	$0$ $0$
$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$

Step 1.3

Multiply

0

$0$ by

4

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

80

$80$ .


	$4$ $4$	$5$ $5$	$0$ $0$
$\times$ $⨯$		$8$ $8$	$0$ $0$
	$0$ $0$	$0$ $0$	$0$ $0$

Step 1.4

Multiply

8

$8$ by

0

$0$ . Place the result in the next column in the result line. There is one result line for each digit in

80

$80$ .


	$4$ $4$	$5$ $5$	$0$ $0$
$\times$ $⨯$		$8$ $8$	$0$ $0$
	$0$ $0$	$0$ $0$	$0$ $0$
		$0$ $0$

Step 1.5

Multiply

8

$8$ by

5

$5$ . Place the ones digit

(0)

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

(4)

$(4)$ . There is one result line for each digit in

80

$80$ .

	$4$ $4$
	$4$ $4$	$5$ $5$	$0$ $0$
$\times$ $⨯$		$8$ $8$	$0$ $0$
	$0$ $0$	$0$ $0$	$0$ $0$
	$0$ $0$	$0$ $0$

Step 1.6

Multiply

8

$8$ by

4

$4$ and add the carried

4

$4$ . Place the ones digit

(6)

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

(3)

$(3)$ . There is one result line for each digit in the

80

$80$ .


		$4$ $4$	$5$ $5$	$0$ $0$
	$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$
$3$ $3$	$6$ $6$	$0$ $0$	$0$ $0$

Step 1.7

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

0 + 0

$0 + 0$ , then place the

0

$0$ in the result line.


		$4$ $4$	$5$ $5$	$0$ $0$
	$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$
$3$ $3$	$6$ $6$	$0$ $0$	$0$ $0$
				$0$ $0$

Step 1.8

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

0 + 0

$0 + 0$ , then place the

0

$0$ in the result line.


		$4$ $4$	$5$ $5$	$0$ $0$
	$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$
$3$ $3$	$6$ $6$	$0$ $0$	$0$ $0$
			$0$ $0$	$0$ $0$

Step 1.9

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

0 + 0

$0 + 0$ , then place the

0

$0$ in the result line.


		$4$ $4$	$5$ $5$	$0$ $0$
	$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$
$3$ $3$	$6$ $6$	$0$ $0$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$

Step 1.10

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

0 + 6

$0 + 6$ , then place the

6

$6$ in the result line.


		$4$ $4$	$5$ $5$	$0$ $0$
	$\times$ $⨯$		$8$ $8$	$0$ $0$
		$0$ $0$	$0$ $0$	$0$ $0$
$3$ $3$	$6$ $6$	$0$ $0$	$0$ $0$
	$6$ $6$	$0$ $0$	$0$ $0$	$0$ $0$

Step 1.11

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

0 + 3

$0 + 3$ , then place the

3

$3$ in the result line.


		$4$ $4$	$5$ $5$	$0$ $0$
	$⨯$		$8$	$0$
		$0$	$0$	$0$
$3$	$6$	$0$	$0$
$3$	$6$	$0$	$0$	$0$


		$4$	$5$	$0$
	$⨯$		$8$	$0$
		$0$	$0$	$0$
$3$	$6$	$0$	$0$
$3$	$6$	$0$	$0$	$0$

Step 2

The result of

$450 \cdot 80$ is

$36000$ .

$36000$