# Numbers/Content/Using Numbers/Using Negative Numbers

## Lesson

~ a positive number

~ a negative number

Subtracting Rules

Adding a negative number is the same as subtracting a positive number.

$\displaystyle 7+-4=7-4$

Subtracting a negative number is the same as adding a positive number.

$\displaystyle 7--4=7+4$

### Multiplying and Dividing

Multiplying a negative number by a positive number, or a positive number by a negative number makes the answer negative.

$\displaystyle -2*3=-6$
$\displaystyle 2*-3=-6$

Multiplying a negative number by a negative number makes the answer positive.

$\displaystyle -2*-3=6$

Do the same for dividing.

$\displaystyle -6$ ÷ $\displaystyle 3=-2$
$\displaystyle 6$ ÷ $\displaystyle -3=-2$
$\displaystyle -6$ ÷ $\displaystyle -3=2$