Algebra Examples

$42 \cdot 4$

Step 1

Multiply using long multiplication.

Tap for more steps...

Step 1.1

Multiply

$4$ by

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

$4$ .


	$4$	$2$
$⨯$		$4$
		$8$

Step 1.2

Multiply

$4$ by

$4$ . Place the ones digit

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

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

$4$ .


	$4$	$2$
$⨯$		$4$
$1$	$6$	$8$

Step 1.3

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

$8$ , then place the

$8$ in the result line.


	$4$	$2$
$⨯$		$4$
$1$	$6$	$8$
		$8$

Step 1.4

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

$6$ , then place the

$6$ in the result line.


	$4$	$2$
$⨯$		$4$
$1$	$6$	$8$
	$6$	$8$

Step 1.5

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

$1$ , then place the

$1$ in the result line.


	$4$	$2$
$⨯$		$4$
$1$	$6$	$8$
$1$	$6$	$8$


	$4$	$2$
$⨯$		$4$
$1$	$6$	$8$
$1$	$6$	$8$

Step 2

The result of

$42 \cdot 4$ is

$168$ .

$168$

$42 \cdot 4$

(

)

[

]

√



≥

















≤















∩

∪







∞











