Math exam 1

  1. (a) What value does the digit ‘3’ have? answer: one’s
  2. (b) What are the factors of the number between 1 and 10? answer: 1, 2, 3, 4, 5, 6, 7, 8, 10
  3. (c) Write the number using words. answer: two hundred fourteen billion three hundred ninety-five million two hundred nine thousand eight hundred eighty.
  4. MMDCCLXXXIX
  5. answer: 748
  6. 4. ?
  7. |‒36| ÷ 12 = 3
  8. |12| × 3 = 36
  9. ‒12 + 9 = -3
  10. 154 ‒ (‒76) = 230
  11. ‒8 × (‒4) = 32
  12. Is 0.3592 a rational number? How can you tell? answer: Yes.
  13. Write the following numbers in scientific notation: 450,000,000 answer: 4.5 x 10
  14. 0.0000072 answer: 7.2 x 10
  15. Solve the following problems: 91,389 + 21,054 + 131 + 2,458 = 115,03, 67,413 ‒ 9,675 = 57,738, 5,423 × 87 = 471,801, 12/3 = 1728
  16. 629,458 ÷ 7 = 89922
  17. In the power 78/19, what is the value of the base and what is the value of the exponent answer: base: 78 exponent: 19
  18. Evaluate the following using the correct order of operations: answer: 4
  19. Find the least common multiple of 24, 30, 42 and 28. answer: 2, 5, 1, 1
  20. Draw a number line and graph the inequality: ‒3 < x < 1 answer: 840
  21. Reduce 126 over 84 to the lowest terms. 2 over 3
  22. Reduce 3 7 over 8 to an improper fraction whose denominator is 40. answer: 155 over 40
  23. Solve the following. Leave any improper fractions as improper fractions: 4 over 5 – 5 over 12 = 23 over 60 2 over 7 x 8 over 9 = 16 over 63 5 over 6 divide 7 over 12 = 10 over 7
  24. Reduce 1 over 20 to a decimal = 0.05
  25. In the decimal 4.67935 what is the value of the digit ‘3’? = 0.0003
  26. Solve the following: 4.2569 + 1.325 = 5.5819, 12.67 ‒ 5.238 = 7.432, 0.23 × 1.16 = .2668, 8.236 ÷ 0.12 = 40

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