Basic Math Examples

12 \cdot 9

$12 \cdot 9$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

9

$9$ by

2

$2$ . Place the ones digit

(8)

$(8)$ in the result line and carry the tens digit

(1)

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

9

$9$ .

Step 1.2

Multiply

9

$9$ by

1

$1$ and add the carried

1

$1$ . 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

9

$9$ .

Step 1.3

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

8

$8$ , then place the

8

$8$ in the result line.

Step 1.4

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

0

$0$ , then place the

0

$0$ in the result line.

Step 1.5

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

1

$1$ , then place the

1

$1$ in the result line.

Step 2

The result of

12 \cdot 9

$12 \cdot 9$ is

108

$108$ .

108

$108$