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**Find Square Roots and Compare Real Numbers**

By: Amanda West

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Intro All positive real numbers have two square roots, a positive square root and a negative square root. A square root is written with the √ (radical symbol). Perfect Squares You need to approximate a square root if the radicand is a whole number that is not a perfect square.

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Irrational Numbers The root of a whole number that is not a perfect square is an example of an irrational number. √945= The decimal form of an irrational number neither terminates or repeats.

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**Real Numbers In the example to the left, all are real numbers.**

Irrational Numbers Rational Numbers Whole #’s In the example to the left, all are real numbers. Integers

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**Vocabulary Radicand- the number or expression inside a radical symbol**

Perfect Square- the square of an integer Square Root- Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. Real Number- the set of all rational and irrational numbers Irrational Number- a number that cannot be written as a quotient of two integers

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Real Numbers and Properties Objective: The students will be able to classify real numbers and recognize different properties that exist with real numbers.

Real Numbers and Properties Objective: The students will be able to classify real numbers and recognize different properties that exist with real numbers.

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