Basic Math Examples

4 \cdot 25

$4 \cdot 25$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

5

$5$ by

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

25

$25$ .


		$4$ $4$
$⨯$ $⨯$	$2$ $2$	$5$ $5$
	$2$ $2$	$0$ $0$

Step 1.2

Multiply

2

$2$ by

4

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

25

$25$ .


		$4$ $4$
$⨯$ $⨯$	$2$ $2$	$5$ $5$
	$2$ $2$	$0$ $0$
	$8$ $8$

Step 1.3

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

0 + 0

$0 + 0$ , then place the

0

$0$ in the result line.


		$4$ $4$
$⨯$ $⨯$	$2$ $2$	$5$ $5$
	$2$ $2$	$0$ $0$
	$8$ $8$
		$0$ $0$

Step 1.4

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

2 + 8

$2 + 8$ , then place the

0

$0$ in the result line and carry the

1

$1$ .


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


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

Step 2

The result of

4 \cdot 25

$4 \cdot 25$ is

100

$100$ .

100

$100$

4 \cdot 25

$4 \cdot 25$

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