Warm-Up Change each decimal to a fraction: 1.0.878 2.0.45 3.0.6 4.0.1234.

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Presentation transcript:

Warm-Up Change each decimal to a fraction:

Pre-Algebra 9.1 Squares and Square Roots

Vocabulary Square to multiply a number by itself Example: 2 Squared = 2 x 2 = 4 Perfect Squares numbers that have whole number factors you can square Example: 5 x 5 = 25 8 x 8 = x 13 = 169

Square Root one of two equal factors of a number The SQUARE ROOT of 36 is 6, because you can square 6 to get 36 6 x 6 = 36 Radical Sign used to indicate a square root CANNOT have a negative UNDER the radical sign

Find each square root:

Find the square roots:

9.2 The Real Number System Pre-Algebra

Vocabulary Natural Numbers – 1, 2, 3, 4… Whole Numbers – 0, 1, 2, 3, 4… Integers - -2, -1, 0, 1, 2,… Rational Numbers – any number that can be expressed as a fraction where the denominator is not 0 and the decimal STOPS or REPEATS!!! Irrational Numbers – numbers that DO NOT REPEAT and DO NOT STOP!!!

NumberIrrationalRationalNaturalWholeInteger /6 √ √52 1.Name all of the sets of numbers to which each real number belongs. You can mark the correct answers with a check mark! More than one may apply!

Replace the ____with, or = to make the following statement true. 2.√125 ______ 11 7/8

Order 6, ¼, √38, 6.5, and √36 from least to greatest! 3.

Breaking down a square root that is not a perfect root, with out giving a decimal! 4.√405.√68

6.√1327.√94

Solve the equations: 9.w 2 = r 2 = 50

9.1 Study Guide and Intervention

Homework: 9.2 Practice #’s ODD

Homework: 9.1 Skills Practice ODD