REAL NUMBERS (as opposed to fake numbers?) Two Kinds of Real Numbers Rational Numbers Irrational Numbers.

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Presentation transcript:

REAL NUMBERS (as opposed to fake numbers?)

Two Kinds of Real Numbers Rational Numbers Irrational Numbers

Rational Numbers A rational number is a real number that can be written as a ratio of two integers. A rational number written in decimal form is terminating or repeating.

Examples of Rational Numbers 16 1/ … - 3/4

Irrational Numbers An irrational number is a number that cannot be written as a ratio of two integers. Irrational numbers written as decimals are non-terminating and non-repeating.

Examples of Irrational Numbers Square roots of non-perfect “squares” Pi 17

Whole Numbers Whole numbers are counting numbers and zero For example: 0,1,2,3,4,5,6,7,8,9,10…

Integers One of the subsets of rational numbers

What are integers? Integers are the whole numbers and their opposites. Examples of integers are

Whole numbers and Integers are rational numbers because they can be written as fraction with 1 as the denominator.

Irrational Numbers Rational numbers are NOT irrational numbers. The best way to learn about irrational numbers is to get familiar with some of them. (Sorting Activity)