# Positive and Negative Numbers

**Topic promise:** By the end of this topic, you’d know how mathematical operations impact positive and negative numbers

Topic duration: 7 minutes

All numbers can be divided into 3 categories:

- Positive
- Negative
- 0 (0 is neither positive, nor negative)

Positive number: Any number to the right of 0 on number line

Negative number: Any number to the left of 0 on number line

xis positive is equivalent to saying x > 0

xis negative is equivalent to saying x < 0

xis neither positive, nor negative is equivalent to saying x = 0

pos x pos = pos

pos x neg = neg

neg x neg = pos

(same for division)

## GMAT Integer Properties Pos Neg - Practice

when neg x neg = pos, then why -12 x -1.67 is a incorrect choice.