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Review Sheet with Answer Key - Preparatory Chemistry | CHE 100, Study notes of Chemistry

Material Type: Notes; Class: Preparatory Chemistry; Subject: Chemistry (CHE); University: Monroe Community College; Term: Spring 2003;

Typology: Study notes

Pre 2010

Uploaded on 08/09/2009

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CHE100
Math Review Answer Key
In the number 361,287,490, state what digit is in the indicated place.
1. thousands place _____7__________________
2. tens place _____9__________________
3. hundred-millions place _____3__________________
4. ones place _____0__________________
5. ten-millions place _____6__________________
6. hundreds place _____4__________________
7. hundred-thousands place _____2__________________
8. millions place _____1__________________
Write the number indicated by the word name.
9. four hundred thirty-two ______432_______________
10. seven hundred one ______701_______________
11 eight thousand, three hundred ______8,300_____________
12. seventy-six thousand, fifty ______76,050____________
13. two hundred fourteen thousand, four hundred eight ______214,408___________
14. five million, two hundred thousand ______5,200,000_________
15. eighteen million, six hundred twelve ______18,000,612_________
16. six hundred thirty-two million, nine hundred fourteen thousand, six hundred nine
______632,914,609_______
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CHE

Math Review Answer Key

In the number 361,287,490, state what digit is in the indicated place.

  1. thousands place _____ 7 __________________
  2. tens place _____ 9 __________________
  3. hundred-millions place _____ 3 __________________
  4. ones place _____ 0 __________________
  5. ten-millions place _____ 6 __________________
  6. hundreds place _____ 4 __________________
  7. hundred-thousands place _____ 2 __________________
  8. millions place _____ 1 __________________ Write the number indicated by the word name.
  9. four hundred thirty-two ______ 432 _______________
  10. seven hundred one ______ 701 _______________ 11 eight thousand, three hundred ______ 8,300 _____________
  11. seventy-six thousand, fifty ______ 76,050 ____________
  12. two hundred fourteen thousand, four hundred eight ______ 214,408 ___________
  13. five million, two hundred thousand ______ 5,200,000 _________
  14. eighteen million, six hundred twelve ______ 18,000,612 _________
  15. six hundred thirty-two million, nine hundred fourteen thousand, six hundred nine ______ 632,914,609 _______

In the number 0.00907, state what digit is in the indicated place.

  1. hundredths place ____ 0 ___________________
  2. ten-thousandths place ____ 0 ___________________ Write the word name of the decimal number.
    1. 0.4 ____ four tenths __________
  3. 0.17 ____ seventeen hundredths _
  4. 0.003 ____ three thousandths _____
  5. 0.142 ____ one hundred forty two thousandths _ Write the decimal number indicated by the word name.
  6. nine tenths ____ 0.9 _________________
  7. four hundredths ____ 0.04 ________________
  8. eighty-eight thousandths ____ 0.088 _______________
  9. nine ten-thousandths ____ 0.0009 ______________ Name these decimal numbers.
  10. 8.2 ____ eight point two _______
  11. 6.03 ____ six point zero three ___
  12. 68.04 sixty eight point zero four
  13. 3.0012 three point zero zero one two Write the decimal number indicated by the word name.
  14. three point six ____ 3.6 _________________
  15. thirty-two point zero ____ 32.0 ________________
  16. seventy-two point zero three ____ 72.03 _______________
  17. twelve point three ____ 12.3 ________________ Solve the problems below.

11. 0.81/0.09 = ____ 9 ___________________

12. 11.152/27.2 = ____ 0.410 ________________

Use a calculator to solve these problems.

  1. 18.91 + 32.15 = _____ 51.06 ______________
  2. 21.87 + 0.95 + 11.27 = _____ 34.09 ______________
  3. 98.27 - 62.97 = _____ 35.30 ______________
  4. 0.895 - 0.428 = _____ 0.467 ______________
  5. 7.55 x10.98 = _____ 82.899 ( 82.9) _______
  6. 0.87 x1.18 = _____ 1.0266 (1.0) _________
  7. 35.75 - 14.3 = _____ 21.45 ( 21.5) ________
  8. 0.9495 + 0.211 = _____ 1.1605 (1.161) _______
  9. 28.6 -14.2 + 18.7 = _____ 33.1 _______________
  10. 0.987 + 1.154 - 0.243 = _____ 1.898 ______________
  11. _____ 11.11 (11) __________

12. _____ 0.417 ______________

13. _____ 3.20 _______________

14. _____ 3 _________________

15. _____ 6.8 (7) _____________

16. _____ 3.0 ________________

17. _____ 97 _________________

18. _____ 200 ________________

19. _____ 3.59473 (3.6) ________

20. ______ 5.2 _______________

Give the answers to the addition problems below, with the correct signs and absolutevalues.

  1. (-6) + (-3) = ____ -9 __________________
  2. (+3) + (-4) = ____ -1 __________________
  3. (-8) + (+9) = _____ 1 __________________
  4. (+6) + (-4) = _____ 2 __________________
  5. (-8) + (+6) = _____ -2 _________________
  6. (-2) + (-3) = _____ -5 _________________
  7. (+13) + (-21) = _____ -8 _________________
  8. (-21) + (-13) = _____ -34 ________________
  9. (+24) + (+20) = _____ 44 _________________
  10. (-19) + (+49) = ______ 30 ________________

Give the answers to the subtraction problems below, with the correct signs and absolute