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Numbers. Free powerpoints at http://www.worldofteaching.com. Perfect Square. Squares of whole numbers. 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. Radical Sign.
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Numbers Free powerpoints at http://www.worldofteaching.com
Perfect Square • Squares of whole numbers
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.
Radical Sign • The sign used to represent a nonnegative square root.
Principle Square Root • A nonnegative square root
Irrational Number • Numbers that cannot be expressed as a/b.
Real Number • Irrational numbers together with rational numbers to form the set of all numbers.
Natural Numbers • 1, 2, 3, 4...
Whole Numbers • 0, 1, 2, 3, 4, 5...
Integers • The whole numbers and their opposites. • ...-3, -2, -1, 0, 1, 2, 3...
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.