1. Please write the following notes into your composition book.
Real Number system
Please write the following notes into your composition book.
Lesson 4-7

2. So, Natural + Whole + Integers + Rational + Irrational = REAL NUMBERS
Remember the families of numbers: Natural, Whole, Integers, Rational and now……
IMPORTANT
So, Natural + Whole + Integers + Rational + Irrational = REAL NUMBERS

3. Name the sets of numbers to which each real number belongs: Natural, Whole, integer, rational or irrational.
Since 21/7 = 3, this is a natural number, whole number an integer, and a rational number.
Since -2.5 = -5/2, this is a rational number.
Since 0.2 = …..or 2/9, this number is a rational number.
Since = …..it is not a square root of a perfect square so it is IRRATIONAL!

4. IMPORTANT

5. Ordering Real Numbers:

6. Solving square roots within an equation…….Please take note!!

7. A few practice problems…….
Name the family of numbers each belong to:
Order the following from GREATEST to LEAST:
Solve for the variable:

9. Build the table below and check the appropriate box for each number.
Number
Real
Rational
Irrational
Integer
Whole
Natural 1 -6 2 3 4

10. Build the table below and check the appropriate box for each number.
Number
Real
Rational
Irrational
Integer
Whole
Natural 1 -6  x x  2 3 4