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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 627 · 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. 1.9.75 + 9.7 = ? (a) 19.55 (b) 19.45 (c) 10.72 (d) 19.35
  2. 2.8.76 + 6.3 = ? (a) 9.39 (b) 15.16 (c) 15.06 (d) 14.96
  3. 3.What is the value of the digit 7 in 17.659? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  4. 4.3.24 + 6.4 = ? (a) 9.74 (b) 9.64 (c) 3.88 (d) 9.54
  5. 5.What is the value of the digit 9 in 29.658? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  6. 6.Which is the smallest: 0.8, 0.053, 0.82, 0.761? (a) 0.8 (b) 0.053 (c) 0.82 (d) 0.761
  7. 7.What is the value of the digit 9 in 29.845? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  8. 8.What is the value of the digit 3 in 34.629? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  9. 9.6.02 + 8.6 = ? (a) 14.52 (b) 6.88 (c) 14.62 (d) 14.72
  10. 10.Which is the smallest: 0.576, 0.6, 0.023, 0.62? (a) 0.576 (b) 0.6 (c) 0.023 (d) 0.62
  11. 11.4.57 + 6.1 = ? (a) 10.67 (b) 10.57 (c) 10.77 (d) 5.18
  12. 12.2.31 + 5.2 = ? (a) 7.51 (b) 7.61 (c) 2.83 (d) 7.41
  13. 13.Which is the smallest: 0.094, 0.522, 0.6, 0.61? (a) 0.094 (b) 0.522 (c) 0.6 (d) 0.61
  14. 14.Which is the smallest: 0.33, 0.3, 0.095, 0.238? (a) 0.33 (b) 0.3 (c) 0.095 (d) 0.238
  15. 15.Which is the greatest: 0.011, 0.4, 0.323, 0.43? (a) 0.011 (b) 0.4 (c) 0.323 (d) 0.43
  16. 16.Which is the smallest: 0.062, 0.3, 0.274, 0.38? (a) 0.062 (b) 0.3 (c) 0.274 (d) 0.38
  17. 17.What is the value of the digit 6 in 64.271? (a) 0.06 (b) 0.6 (c) 6 (d) 60
  18. 18.What is the value of the digit 7 in 15.793? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  19. 19.Which is the greatest: 0.3, 0.39, 0.035, 0.229? (a) 0.3 (b) 0.39 (c) 0.035 (d) 0.229
  20. 20.Which is the greatest: 0.057, 0.86, 0.8, 0.781? (a) 0.057 (b) 0.86 (c) 0.8 (d) 0.781
  21. 21.1.67 + 7.3 = ? (a) 8.87 (b) 9.07 (c) 2.4 (d) 8.97
  22. 22.9.22 + 7.4 = ? (a) 16.62 (b) 9.96 (c) 16.52 (d) 16.72
  23. 23.What is the value of the digit 4 in 51.467? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  24. 24.Which is the smallest: 0.49, 0.4, 0.063, 0.376? (a) 0.49 (b) 0.4 (c) 0.063 (d) 0.376
  25. 25.2.65 + 3.5 = ? (a) 6.25 (b) 3 (c) 6.15 (d) 6.05
  26. 26.Which is the greatest: 0.8, 0.059, 0.765, 0.89? (a) 0.8 (b) 0.059 (c) 0.765 (d) 0.89
  27. 27.6.61 + 5.4 = ? (a) 7.15 (b) 11.91 (c) 12.01 (d) 12.11
  28. 28.4.23 + 2.2 = ? (a) 6.43 (b) 6.33 (c) 4.45 (d) 6.53
  29. 29.2.99 + 6.5 = ? (a) 9.39 (b) 3.64 (c) 9.49 (d) 9.59
  30. 30.3.53 + 1.4 = ? (a) 3.67 (b) 4.93 (c) 5.03 (d) 4.83
  31. 31.What is the value of the digit 3 in 31.268? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  32. 32.3.64 + 8.2 = ? (a) 4.46 (b) 11.74 (c) 11.94 (d) 11.84
  33. 33.1.23 + 7.9 = ? (a) 9.03 (b) 9.23 (c) 9.13 (d) 2.02
  34. 34.4.59 + 3.8 = ? (a) 8.29 (b) 8.49 (c) 4.97 (d) 8.39
  35. 35.What is the value of the digit 5 in 17.459? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  36. 36.Which is the greatest: 0.454, 0.51, 0.5, 0.089? (a) 0.454 (b) 0.51 (c) 0.5 (d) 0.089
  37. 37.Which is the smallest: 0.79, 0.032, 0.662, 0.7? (a) 0.79 (b) 0.032 (c) 0.662 (d) 0.7
  38. 38.5.71 + 6.2 = ? (a) 6.33 (b) 11.81 (c) 11.91 (d) 12.01
  39. 39.Which is the smallest: 0.62, 0.524, 0.6, 0.076? (a) 0.62 (b) 0.524 (c) 0.6 (d) 0.076
  40. 40.Which is the greatest: 0.622, 0.012, 0.79, 0.7? (a) 0.622 (b) 0.012 (c) 0.79 (d) 0.7

Answer key

  1. 19.45
  2. 15.06
  3. 7
  4. 9.64
  5. 9
  6. 0.053
  7. 9
  8. 30
  9. 14.62
  10. 0.023
  11. 10.67
  12. 7.51
  13. 0.094
  14. 0.095
  15. 0.43
  16. 0.062
  17. 60
  18. 0.7
  19. 0.39
  20. 0.86
  21. 8.97
  22. 16.62
  23. 0.4
  24. 0.063
  25. 6.15
  26. 0.89
  27. 12.01
  28. 6.43
  29. 9.49
  30. 4.93
  31. 30
  32. 11.84
  33. 9.13
  34. 8.39
  35. 0.05
  36. 0.51
  37. 0.032
  38. 11.91
  39. 0.076
  40. 0.79

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