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Math Fluency/Mental Arithmetic QuizTo the Instructor:Below are two “mental arithmetic” quizzes. The objective to help instructors to evaluate how much review of pre-requisite math topics would be advisable in a general chemistry or AP course.The quiz can be administered at any time, but early in the course is recommended. Both cognitive science and chemistry education studies indicate a strong correlation between general/AP chemistry success and “computational fluency:” The ability to solve simple calculations using quick and accurate recall of memorized math facts and algorithms -- math without a calculator. This “no calculator” quiz could be given as a “stand alone” 15 minute quiz or as a “Part 2” after a Part I “with calculator” quiz is collected. As a measure of “math automaticity,” the quiz should be time limited (with an announcement of 5 minutes remaining suggested).For a shorter quiz, some questions can be Xed out on quiz copies -- or by direction to students before the quiz begins.Two different quizzes are provided that should have the same in difficulty. If test security is an issue, both versions may be handed out in an alternating order. The quiz may be a better measure what students can do if they are told the “quiz counts,” and if it does count to at least some extent. Feedback is welcome to feedback@ This quiz is a part of the activity packet at MentalMath.PDF Your Name: ____________________________________________ Section __________________You have 15 minutes to complete this quiz. You may NOT use a calculator. Show needed work on this paper, but circle your answers. Multiply 1. 78 2. (0.50 x 10―6) (6.4 x 1021) = 96 ? 3. (2.50 x 10―9) (3.0 x 1017) = 4.Write these answers in fixed decimal notation (as regular numbers).a. 140/10,000 = b. 470= 5. 105 x 1023 = 10―1 x 10―66. 9.0 x 10―18 = 2.0 x 10―5Write these values as their decimal equivalents: 7. 1/8 = 8. 1/50 = 9. If P1V1 = P2V2 then, in symbols: T2 = T1 T210. Write the base 10 log of a. 1000 b. 0.000111. (3.0 x 10─7)2 = 12. The square root of 64 x 10―12 = Enter the remaining coefficients that balance these:13. 8 NH3 + ______ O2 ______ NO + _____ H2O14. 12 NH3 + ______ O2 ______ NO2 + _____ H2OYour Name: ____________________________________________ Section __________________You have 15 minutes to complete this quiz. You may NOT use a calculator. Show needed work on this paper, but circle your answers. Multiply 1. 87 2. (0.50 x 10―4) (3.2 x 1021) = 96 ? 3. (3.50 x 10―9) (2.0 x 1017) = 4.Write these answers in fixed decimal notation (as regular numbers).a. 24/10,000 = b. 420= 5. 107 x 10―23 = 10―1 x 10―66. 7.0 x 10―18 = 2.0 x 10―7Write these values as their decimal equivalents: 7. 1/8 = 8. 1/20 = 9. If P1V1 = P2V2 then, in symbols: T1 = T1 T210. Write the base 10 log of a. 10,000 b. 0.111. (2.0 x 10─8)2 = 12. The square root of 49 x 10―18 = Enter the remaining coefficients that balance these:13. 8 NH3 + ______ O2 ______ NO2 + _____ H2O14. 12 NH3 + ______ O2 ______ NO + _____ H2O ................
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