Math 121 Sample Skill Quizes Don't make the mistake of studying only this sample quiz. The questions on this quiz are only examples of some of the types of questions that might appear on the quiz(es) you will take. Be sure to review the relevant sections in your textbook before taking the quiz. MTH 121 Sample Basic Skills Quiz #1 (Basic Operations) Evaluate the following expressions without using a calculator. Circle your answers. 1. -20 - 10 2. |-32/8| 3. |-8 + (-30)| 4. 12 - (-8) 5. 25 / 0 6. (-7)(-2) 7. The quotient of -20 and -4 8. 18cm + (-4cm) 9. 5 - 2(6) 10. [(12 + (-2))5] / 10 - 4 MTH 121Sample Basic Skills Quiz #2 (Fractions) Evaluate the following expressions in problems 1-5. 1. 1/4 - 3/5 2. -5/2 + (7/4)(10/7) 3. (7/3) / (-5/12) 4. (-8/5)(7/16) 5. 3/4 --------- 15/16 6. Reduce -20/35 7. Which is larger, -.5871 or -.7132? 8. Find the reciprocal of -5/4. 9. Write 24/400 as a percentage. 10. 1/2 + 1/5 ____________ 2/3 - 1/5 MTH 121 Sample Basic Skills Quiz #3 (Powers and Roots) Evaluate the following expressions without using a calculator. Circle your answers. 1. ( 121/64)(1/2) 2. -43 3. 64(1/6) 4. [4(3)2 ÷ 6]0 5. (1/2)-3 6. (-125)1/3 7. 73/5 X 72/5 8. 3-4 ÷ 3-2 9. 34 + 54 10. [-2(3)2 - 27 ÷ 9(1/2) ] (-4) MTH 121 Sample Basic Skills Quiz #4 (Scientific Notation) Complete the following without using a calculator. Circle your answers. 1. Write 4 trillionth in scientific notation. 2. Simplify 102 ÷ 106. Write your answer as a fraction. 3. The speed of light is 3 x 108 m/s. Write 3 x 108 in ordinary (standard) notation. 4. Round 52,154 to the nearest hundred. Write your answer in scientific notation. 5. Convert 7.85 x 10-3 to standard notation. 6. Convert 0.000042 to scientific notation. 7. Simplify 10-4 + 104. Write your answer in decimal form. 8. Simplify (2.3 x 10-5) + (5.7 x 10-5). Write your answer in standard notation. 9. Write a number in scientific notation that is 1000 times larger than 2.31 x 10-9. 10. Convert (0.0008)(500,000) / (4,000) to scientific notation and simplify. Write your answer in scientific notation. MTH 121 Sample Basic Skills Quiz #5 (Algebra) You may use a calculator on this quiz. Circle your answers. 1. Multiply. (5x+ 1)(x2 + 3x - 2) 2. Factor. 8x2 - 26x + 15 3. Simplify. (6x3 - 12x2) /( 6x2) 4. Solve. (4-3x)1/2 = 4 5. Is 1 a solution of 8 4 _________ = ______________ ? x + 1 5 - x 6. If y = 52x-4, find y when x = 3 7. Simplify. (7x2 - 3x) - (10x2 - 12x) 8. Solve. 3(x - 5) - 2x = 2x + 11 9. Solve for z. 2y + 8xyz - 8y = 5xyz 10. Is (x+5)(2x - 3) = (2x - 3)(x + 5) an identity? MTH 121 Sample Basic Skills Quiz #6 ( Logarithms) Your will need a calculator to take this quiz. Circle your answers. 1. Write in words the meaning of log5 125. The power that 5 must be raised to equal 125. 2. Write 10-2 = 0.01 in logarithmic form. -2 = log100.01 3. Write ln 0.12 = -2.12 in exponential form. e-2.12 = 0.12 4. Solve for x, log10 x = 8 x = 108 5. Solve for x. Round to the nearest tenth. ln x = 1.36 x = 3.9 6. Evaluate log10 0.00001. -5 7. If log x = 4.318 and log y = 1.472, find log x2 y3 11.58 8. Express ln y - ln 5x as a single logarithm. ln (y/5x) 9. Solve for x. log10(2x-10) = 3 505 10. Solve for x. Round your answer to the nearest thousandth. 8 = 2x+ 1 x = 2.807