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Warm-Up

Warm-Up. Change each decimal to a fraction: 1. 0.878 2. 0.45 3. 0.6 4. 0.1234. 9.1 Squares and Square Roots. Pre-Algebra. 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

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Warm-Up

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  1. Warm-Up • Change each decimal to a fraction: • 1. 0.878 • 2. 0.45 • 3. 0.6 • 4. 0.1234

  2. 9.1 Squares and Square Roots Pre-Algebra

  3. 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 = 64 • 13 x 13 = 169

  4. 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

  5. Find each square root: • 1. 2. • 3. 4.

  6. Find the square roots: • 5. 6. • 7.

  7. 9.2 The Real Number System Pre-Algebra

  8. 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!!!

  9. 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!

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

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

  12. Breaking down a square root that is not a perfect root, with out giving a decimal! • 4. √40 5. √68

  13. 6. √132 7. √94

  14. Solve the equations: • 9. w2 = 169 10. r2 = 50

  15. 9.1 Study Guide and Intervention

  16. Homework: 9.2 Practice #’s 1-31 ODD

  17. Homework: 9.1 SkillsPractice ODD

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