Basic Math & Pre-Algebra All-in-One For Dummies (+ Chapter Quizzes Online). Mark Zegarelli

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СКАЧАТЬ To negate , attach a negative sign: . Now cancel adjacent negative signs: .

      (c) Zero is its own negation.

      (d) Add first: , and the negation of .

      (e) Subtract first: , and the negation of .

      (f) Begin by subtracting: , and the negation of .

      4

      (a) The number is already positive, so the absolute value of .

      (b) The number is negative, so the absolute value of .

      (c) First, do the addition inside the absolute value bars: , which is positive. The absolute value of .

      (d) First, do the subtraction: , which is positive. The absolute value of . You have a negative sign outside the absolute value bars, so negate your answer to get .

      (e) Begin by subtracting: , which is negative. The absolute value of .

      (f) The absolute value of .

      5

(a) Start at , up .

      (b) Start at , down .

      (c) Start at , down .

      (d) Start at , up .

      (e) Start at , down .

      (f) Start at , down .

      6

      (a) 18. Switch around the numbers (with their signs) to turn the problem into subtraction:

      (b) −9. Drop the plus sign to turn the problem into subtraction:

      (c) −79. Drop the signs, add the numbers, and negate the result:

      (d) 7. Turn the problem into subtraction:

      (e) −28. Turn the problem into subtraction:

      (f) −537. Drop the signs, add the numbers, and negate the result:

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