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Unit 1 PreAlgebra Review
  October A

General instructions:

Show your work.

    • Type each new line of work under the previous one.
    • Each line should include—at most—one equals sign.

Conclude with your final solution(s), presented in the appropriate format.

    • Always reduce answers to lowest terms and simplify all signs in the final answers.
      [ex. –(+3) would be written as -3; +(-3) would be written as -3].
• Unless decimals are in the original problem, no work or answers should be presented in decimal form.   (Exception: scientific notation.)

Present all partial numbers as proper fractions.

Present all mixed numbers as improper fractions.

Type parentheses around:

7 All fractional coefficients.

  [ex. (1/2)x; (4/3)y2]

9 All numerators and denominators longer than one term if typing horizontally. [ex. (x – 2)/6; -7/(y + 3); (x – 6)/(x + 5)]

        o All fractions being multiplied or divided if typing horizontally.
  [ex. (4/5)(2/9); (2/3) ÷ (-3/4)]
        o All negative divisors if typing horizontally.
  [ex. 15/(-3); -x/(-1)]
        o All negative terms that follow an addition or subtraction sign.
  [ex. -8 + (-9); 3 – (-6)]

Assume that all variables in any denominator are nonzero.

    • Use superscript to format all exponents.
          [ex. “three to the fourth power” is 34]

Express all answers with positive exponents.

Evaluate exponents whenever possible.

    • Present all radicals beginning with the √ symbol.   Type [   ] around the entire radicand.
          (ex. √[13]; √[x + 3]; √[x2 – 4x + 7])
• Review all your work before submitting this Project.   Typographical errors, incorrect formatting, typing words where symbols belong, and so on, are all mistakes and will be graded as such.

  1) Perform the indicated operation; write answer in simplest form:
  5 and 3/4 – 2 and 2/5

  5 3/4 – 2 2/5=
  5 15/20 – 2 8/20=
  =3 7/20
  =67/20...