1. Unit 1-Number Sets
Aa-1.1 Define and identify integers, rational, irrational, natural, whole and real numbers.

2. 1-1 Properties of Real Numbers
Real Numbers – are all Rational and Irrational Numbers.
There are 5 subsets of real numbers
Natural Numbers – are the numbers used for counting.
1,2,3,4,…………….
Whole Numbers – are the natural numbers and 0.
0,1,2,3,4,………

3. Subsets of Real Numbers
Integers – are the natural numbers, also called the positive integers, and their opposites, also called the negative integers and zero.
…-3,-2,-1,0,1,2,3,4,…….

4. Subsets of Real Numbers
Rational Numbers- ⅞,¼,0.5,1.2
Can be written as a fraction a / b where both a and b are integers and b is not 0.
Rational numbers can also be written as either terminating or recurring decimal fractions.
Recurring decimal is a fraction which repeats itself forever.
Terminating decimal is a fraction ends after a definite number of digits.

5. Subsets of Real Numbers
Irrational Numbers -√2,√3,√⅜,∏,
cannot be written in the form of a fraction where the numerator and denominator are both integers, whole numbers.
The square root of any prime number is irrational.
pi, the ratio between the circumference and diameter of a circle, is irrational.
Numbers which can only be written as a never-ending, non-repeating decimal fraction.

6. Diagram of Subsets of Real Numbers