Basic Math Examples

125 \cdot 8

$125 \cdot 8$

Step 1

Multiply using long multiplication.

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Step 1.1

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

8

$8$ .

		$4$ $4$
	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
			$0$ $0$

Step 1.2

Multiply

8

$8$ by

2

$2$ and add the carried

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 the

8

$8$ .

	$2$ $2$	$4$ $4$
	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
		$0$ $0$	$0$ $0$

Step 1.3

Multiply

8

$8$ by

1

$1$ 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

8

$8$ .


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$

Step 1.4

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

0

$0$ , then place the

0

$0$ in the result line.


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$
			$0$ $0$

Step 1.5

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

0

$0$ , then place the

0

$0$ in the result line.


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$
		$0$ $0$	$0$ $0$

Step 1.6

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

0

$0$ , then place the

0

$0$ in the result line.


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$
	$0$ $0$	$0$ $0$	$0$ $0$

Step 1.7

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

1

$1$ , then place the

1

$1$ in the result line.


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$


	$1$ $1$	$2$ $2$	$5$ $5$
$\times$ $⨯$			$8$ $8$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$
$1$ $1$	$0$ $0$	$0$ $0$	$0$ $0$

Step 2

The result of

125 \cdot 8

$125 \cdot 8$ is

1000

$1000$ .

1000

$1000$