Basic Math Examples

89 \cdot 75

$89 \cdot 75$

Step 1

Multiply

5

$5$ by

9

$9$ . Place the ones digit

(5)

$(5)$ in the result line and carry the tens digit

(4)

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

75

$75$ .

	$4$ $4$
	$8$ $8$	$9$ $9$
$\times$ $⨯$	$7$ $7$	$5$ $5$
		$5$ $5$

Step 2

Multiply

5

$5$ by

8

$8$ and add the carried

4

$4$ . Place the ones digit

(4)

$(4)$ in the result line and carry the tens digit

(4)

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

75

$75$ .


	$8$ $8$	$9$ $9$
$\times$ $⨯$	$7$ $7$	$5$ $5$
$4$ $4$	$4$ $4$	$5$ $5$

Step 3

Multiply

7

$7$ by

9

$9$ . Place the ones digit

(3)

$(3)$ in the result line and carry the tens digit

(6)

$(6)$ . There is one result line for each digit in

75

$75$ .

	$6$ $6$
	$8$ $8$	$9$ $9$
$\times$ $⨯$	$7$ $7$	$5$ $5$
$4$ $4$	$4$ $4$	$5$ $5$
	$3$ $3$

Step 4

Multiply

7

$7$ by

8

$8$ and add the carried

6

$6$ . Place the ones digit

(2)

$(2)$ in the result line and carry the tens digit

(6)

$(6)$ . There is one result line for each digit in the

75

$75$ .


		$8$ $8$	$9$ $9$
	$\times$ $⨯$	$7$ $7$	$5$ $5$
	$4$ $4$	$4$ $4$	$5$ $5$
$6$ $6$	$2$ $2$	$3$ $3$

Step 5

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

5 + 0

$5 + 0$ , then place the

5

$5$ in the result line.


		$8$ $8$	$9$ $9$
	$\times$ $⨯$	$7$ $7$	$5$ $5$
	$4$ $4$	$4$ $4$	$5$ $5$
$6$ $6$	$2$ $2$	$3$ $3$
			$5$ $5$

Step 6

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

4 + 3

$4 + 3$ , then place the

7

$7$ in the result line.


		$8$ $8$	$9$ $9$
	$\times$ $⨯$	$7$ $7$	$5$ $5$
	$4$ $4$	$4$ $4$	$5$ $5$
$6$ $6$	$2$ $2$	$3$ $3$
		$7$ $7$	$5$ $5$

Step 7

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

4 + 2

$4 + 2$ , then place the

6

$6$ in the result line.


		$8$ $8$	$9$ $9$
	$\times$ $⨯$	$7$ $7$	$5$ $5$
	$4$ $4$	$4$ $4$	$5$ $5$
$6$ $6$	$2$ $2$	$3$ $3$
	$6$ $6$	$7$ $7$	$5$ $5$

Step 8

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

0 + 6

$0 + 6$ , then place the

6

$6$ in the result line.


		$8$ $8$	$9$ $9$
	$\times$ $⨯$	$7$ $7$	$5$ $5$
	$4$ $4$	$4$ $4$	$5$ $5$
$6$ $6$	$2$ $2$	$3$ $3$
$6$ $6$	$6$ $6$	$7$ $7$	$5$ $5$

Step 9

The result of

89 \cdot 75

$89 \cdot 75$ is

6675

$6675$ .

6675

$6675$