Cool math Pre-Algebra Help Lessons: Signed Numbers (Integers)

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Coolmath Pre-Algebra
Signed Number (Integers) lesson 2 - Number Systems (page 1 of 2)
---- This pre-algebra lesson explains the different number systems: natural numbers,
whole numbers, positive numbers, negative numbers, integers and real numbers.

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Up until now, you've been working with

The Natural Numbers:

Natural Numbers = { 1, 2, 3, 4, ... }

The Whole Numbers:

Whole Numbers = { 0, 1, 2, 3, 4, ... }

The Positive Numbers:

Positive Numbers = All numbers greater than 0

These are all of the natural numbers and all the numbers in between (including between 0 and 1).

number line with the positive numbers highlighted and examples of positive numbers pointed out

Continued on the next page

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