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Lesson 9.4 Square Roots 4/13/10 number – a number that can be written as a quotient of two integers Rational number – a number that cannot be written as a quotient of two integers Irrational Never terminates Never repeats -12.65128791357921. . . Real numbers – consist of all rational and irrational numbers Rational Numbers 3 -7 5 1 2 -0.75 -√51 √2 Integers -√49 -13 √16 0 Whole Numbers 1257 Irrational Numbers -0.549318573. . . 6 Square roots are either perfect squares or irrational numbers. Tell whether the number is rational or irrational. a) 1 5 = 0.2 b) 1 9 = 0.11111. . . Rational Rational c) √22 = 4.69041576. . . Irrational Copy and complete √5 ? √5 ≈ 2.236. . . 11 4 = 2.75 √5 < 11 4 11 4 using <, >, or =. Using a number line to order numbers