Basic Math Examples

$- 7 \cdot 12$

Step 1

Multiply using long multiplication.

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Step 1.1

Factor out a

$- 1$ .

$- (7 \cdot 12)$

Step 1.2

Multiply

$2$ by

$7$ . Place the ones digit

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

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

$12$ .

Step 1.3

Multiply

$1$ by

$7$ . Place the result in the next column in the result line. There is one result line for each digit in

$12$ .

Step 1.4

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

$4 + 0$ , then place the

$4$ in the result line.

Step 1.5

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

$1 + 7$ , then place the

$8$ in the result line.

Step 2

The result of

$7 \cdot 12$ is

$84$ .

$84$

Step 3

Multiply

$84$ by

$- 1$ .

$- 84$