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#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

 In m is the index or order Ö is the radical or square root sign a is the radicand a*a = a2 and (-a)*(-a) = a2. Here 'a' is called the square root of a2. Thus for a &-a are two square roots of a2. The square root is denoted by the symbol ' Ö '. Examples: What is the value of Ö25 ? Solution: 25 = 5*5. The square root of 25 is 5. What is the value of Ö144 ? Solution: PRIME FACTORIZATION of 144 = 2 x 3 x 2 x 2 x 3 x 2 Ö144 = Ö2 x 2 x 3 = 12 The square root of 144 is 12. What is the value of Ö841 ? Solution: Here 841 is not divisible by 2,3,4,5,6,7,8,9, or 10 Therefore use the GUESS METHOD to find the square root. The last digit is 1 Therefore the last digits of the two numbers multiplied is either 1 or 9 since 1x1 = 1 and 9x9=81 Therefore try 11 x 11 =121 21x21 = 441 31 x 31 = 961 which is more than the number 841 19 x 19 = 361 29 x 29 = 841 Therefore Ö841 = 29 Directions: Find the square root of the following and show your work. Also write at least ten examples of your own.
 Q 1: What is the value of Ö81?Answer: Q 2: What is the value of Ö361?Answer: Q 3: What is the value of Ö576?Answer: Q 4: What is the value of Ö324?Answer: Q 5: What is the value of Ö256?Answer: Q 6: What is the value of Ö625?Answer: Q 7: What is the value of Ö529?Answer: Q 8: What is the value of Ö144?Answer: Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!