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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 291 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.Which is the smallest: 0.023, 0.246, 0.39, 0.3? (a) 0.023 (b) 0.246 (c) 0.39 (d) 0.3
  2. 2.What is the value of the digit 3 in 31.267? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  3. 3.2.69 + 2.2 = ? (a) 4.79 (b) 4.89 (c) 4.99 (d) 2.91
  4. 4.1.69 + 5.1 = ? (a) 6.79 (b) 2.2 (c) 6.69 (d) 6.89
  5. 5.7.12 + 7.6 = ? (a) 14.62 (b) 7.88 (c) 14.72 (d) 14.82
  6. 6.6.69 + 8.9 = ? (a) 15.69 (b) 15.49 (c) 15.59 (d) 7.58
  7. 7.Which is the greatest: 0.064, 0.52, 0.5, 0.463? (a) 0.064 (b) 0.52 (c) 0.5 (d) 0.463
  8. 8.3.54 + 7.8 = ? (a) 11.44 (b) 4.32 (c) 11.34 (d) 11.24
  9. 9.4.49 + 3.8 = ? (a) 8.19 (b) 4.87 (c) 8.39 (d) 8.29
  10. 10.What is the value of the digit 1 in 14.765? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  11. 11.8.87 + 6.5 = ? (a) 15.47 (b) 15.27 (c) 15.37 (d) 9.52
  12. 12.What is the value of the digit 6 in 52.643? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  13. 13.Which is the greatest: 0.85, 0.096, 0.715, 0.8? (a) 0.85 (b) 0.096 (c) 0.715 (d) 0.8
  14. 14.3.53 + 7.3 = ? (a) 4.26 (b) 10.73 (c) 10.83 (d) 10.93
  15. 15.9.91 + 4.1 = ? (a) 10.32 (b) 14.01 (c) 13.91 (d) 14.11
  16. 16.What is the value of the digit 2 in 76.214? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  17. 17.6.51 + 2.7 = ? (a) 6.78 (b) 9.31 (c) 9.11 (d) 9.21
  18. 18.Which is the smallest: 0.326, 0.043, 0.46, 0.4? (a) 0.326 (b) 0.043 (c) 0.46 (d) 0.4
  19. 19.What is the value of the digit 3 in 17.235? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  20. 20.2.74 + 8.5 = ? (a) 11.24 (b) 11.34 (c) 3.59 (d) 11.14
  21. 21.Which is the smallest: 0.56, 0.091, 0.5, 0.427? (a) 0.56 (b) 0.091 (c) 0.5 (d) 0.427
  22. 22.Which is the greatest: 0.719, 0.069, 0.8, 0.81? (a) 0.719 (b) 0.069 (c) 0.8 (d) 0.81
  23. 23.7.85 + 3.9 = ? (a) 8.24 (b) 11.85 (c) 11.75 (d) 11.65
  24. 24.6.47 + 9.1 = ? (a) 15.67 (b) 7.38 (c) 15.57 (d) 15.47
  25. 25.4.56 + 8.5 = ? (a) 13.16 (b) 13.06 (c) 5.41 (d) 12.96
  26. 26.What is the value of the digit 2 in 82.516? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  27. 27.Which is the greatest: 0.775, 0.026, 0.8, 0.87? (a) 0.775 (b) 0.026 (c) 0.8 (d) 0.87
  28. 28.Which is the smallest: 0.5, 0.417, 0.035, 0.57? (a) 0.5 (b) 0.417 (c) 0.035 (d) 0.57
  29. 29.What is the value of the digit 6 in 31.569? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  30. 30.Which is the greatest: 0.614, 0.72, 0.023, 0.7? (a) 0.614 (b) 0.72 (c) 0.023 (d) 0.7
  31. 31.Which is the greatest: 0.529, 0.67, 0.6, 0.021? (a) 0.529 (b) 0.67 (c) 0.6 (d) 0.021
  32. 32.2.63 + 3.6 = ? (a) 6.23 (b) 6.13 (c) 2.99 (d) 6.33
  33. 33.What is the value of the digit 1 in 12.958? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  34. 34.Which is the smallest: 0.72, 0.7, 0.059, 0.612? (a) 0.72 (b) 0.7 (c) 0.059 (d) 0.612
  35. 35.7.91 + 6.8 = ? (a) 14.61 (b) 14.71 (c) 8.59 (d) 14.81
  36. 36.9.73 + 8.2 = ? (a) 18.03 (b) 17.93 (c) 17.83 (d) 10.55
  37. 37.7.59 + 1.8 = ? (a) 9.49 (b) 9.39 (c) 9.29 (d) 7.77
  38. 38.8.38 + 7.5 = ? (a) 15.78 (b) 15.88 (c) 9.13 (d) 15.98
  39. 39.What is the value of the digit 9 in 91.587? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  40. 40.2.41 + 7.1 = ? (a) 9.61 (b) 3.12 (c) 9.41 (d) 9.51

Answer key

  1. 0.023
  2. 30
  3. 4.89
  4. 6.79
  5. 14.72
  6. 15.59
  7. 0.52
  8. 11.34
  9. 8.29
  10. 10
  11. 15.37
  12. 0.6
  13. 0.85
  14. 10.83
  15. 14.01
  16. 0.2
  17. 9.21
  18. 0.043
  19. 0.03
  20. 11.24
  21. 0.091
  22. 0.81
  23. 11.75
  24. 15.57
  25. 13.06
  26. 2
  27. 0.87
  28. 0.035
  29. 0.06
  30. 0.72
  31. 0.67
  32. 6.23
  33. 10
  34. 0.059
  35. 14.71
  36. 17.93
  37. 9.39
  38. 15.88
  39. 90
  40. 9.51

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