Algebra Examples

$21 \cdot 3$

Step 1

Multiply using long multiplication.

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Step 1.1

Multiply

$3$ by

$1$ . Place the result in the next column in the result line. There is one result line for each digit in

$3$ .

Step 1.2

Multiply

$3$ by

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

$3$ .

Step 1.3

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

$3$ , then place the

$3$ in the result line.

Step 1.4

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

$6$ , then place the

$6$ in the result line.

Step 2

The result of

$21 \cdot 3$ is

$63$ .

$63$