Topic 2 regular

Integer

whole numbers and their opposites

opposite

Equal distance from zero

A = l x w

Area of a rectangle

Postive

Above zero

Negative

Below zero

Sea Level

0

Opposite of -5

5

Opposite of 7

-7

Opposite of -(-65)

-65

Value of -(-10)

10

Which has less value -21 or -20?

-21

Temperature is 18 below zero

-18

Rational Number

Any number that can be expressed as a ratio (a/b) of two integers - Terminate or Repeat

Inequality

< , >, > , <

A decimal equivalent to 1/2

0.5

A fraction equivalent to -0.75

-3/4

Compare -40 to -25

-40 < -25

Whole numbers

Natural numbers ( counting numbers) and zero; 0, 1, 2, 3…

Natural Numbers

The set of numbers 1, 2, 3, 4, … Also called counting numbers.

Easiest way to compare

When numbers are in the same format

l -2.7 l

2.7

Compare l -9 l to -10

>

Quadrant 1

( +,+)

Quadrant ll

(-,+)

Quadrant lll

(-,-)

Quadrant lV

(+,-)

You always move which way first?

left or right ( x axis)

Where will ( -4, 9) land?

Quadrant II

Where will (0,12.2) land?

y-axis

(0,0)

Origin

Plane geometry

2-d geometry

Plane

Flat surface that goes on forever

x and y axis intersect at

a 90 degree angle

Absolute value

Distance from 0

Distance

Can never be negative