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

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


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alt="math"/>.

      (f) math Start at math, down math.

      6

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

math

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

math

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

math

      (d) 7. Turn the problem into subtraction:

math

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

math

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

math

      7

      (a) math Start at math, down math.

      (b) math Start at math, up math.

      (c) math Start at math, up math.

      (d) math Start at math, down math.

      (e) math Start at math, down math.

      (f) math Start at math, up math.

      8

      (a) 43. Cancel the adjacent negative signs to turn the problem into addition:

math

      (b) −66. Drop the signs, add the numbers, and negate the result:

math

      (c) 46. Cancel the adjacent negative signs to turn the problem into addition:

math

      Now switch around the numbers (with their signs) to turn the problem back into subtraction:

math

      (d) −158. Drop the signs, add the numbers, and negate the result:

math

      (e) 124. Cancel the adjacent negative signs to turn the problem into addition:

math

      (f) −71. Cancel the adjacent negative signs to turn the problem into addition:

math

      Now switch around the numbers (with their signs) to turn the problem back into subtraction:

math

      9

      (a) math

      (b) math

      (c) math

      (d) math

      10

      (a) math

      (b) math

      (c) math

      (d) math

math

      The numbers math have different signs, so the answer is negative: math.

      12 math Drop the signs and multiply:

math

      The numbers Скачать книгу