Numbers

1
Numbers
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2
Perfect Square

• Squares of whole numbers

3
Square root

• One of two equal factors of a number. If a
  squared equals b then a is the square root of b.
  The square root of 144 is 12 because 12 squared
  is 144.

4
Radical Sign

• The sign used to represent a nonnegative square
  root.

5
Principle Square Root

• A nonnegative square root

6
Irrational Number

• Numbers that cannot be expressed as a/b.

7
Real Number

• Irrational numbers together with rational numbers
  to form the set of all numbers.

8
Natural Numbers

• 1, 2, 3, 4...

9
Whole Numbers

• 0, 1, 2, 3, 4, 5...

10
Integers

• The whole numbers and their opposites.
• ...-3, -2, -1, 0, 1, 2, 3...

11
Rational Numbers

• Any number that can be expressed in the form a/b
  where a and b are integers and b is not equal to
  0.