Basic Math Examples

$40 \cdot 10$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

$0$ by

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

$10$ .


	$4$	$0$
$⨯$	$1$	$0$
		$0$

Step 1.2

Multiply

$0$ by

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

$10$ .


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$

Step 1.3

Multiply

$1$ by

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

$10$ .


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
	$0$

Step 1.4

Multiply

$1$ by

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

$10$ .


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
$4$	$0$

Step 1.5

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

$0 + 0$ , then place the

$0$ in the result line.


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
$4$	$0$
		$0$

Step 1.6

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

$0 + 0$ , then place the

$0$ in the result line.


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
$4$	$0$
	$0$	$0$

Step 1.7

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

$0 + 4$ , then place the

$4$ in the result line.


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
$4$	$0$
$4$	$0$	$0$


	$4$	$0$
$⨯$	$1$	$0$
	$0$	$0$
$4$	$0$
$4$	$0$	$0$

Step 2

The result of

$40 \cdot 10$ is

$400$ .

$400$