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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 689 · 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. 1.3.82 + 2.2 = ? (a) 6.02 (b) 4.04 (c) 5.92 (d) 6.12
  2. 2.What is the value of the digit 4 in 51.248? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  3. 3.Which is the smallest: 0.31, 0.3, 0.251, 0.082? (a) 0.31 (b) 0.3 (c) 0.251 (d) 0.082
  4. 4.4.66 + 2.9 = ? (a) 4.95 (b) 7.66 (c) 7.56 (d) 7.46
  5. 5.9.95 + 1.6 = ? (a) 10.11 (b) 11.65 (c) 11.45 (d) 11.55
  6. 6.Which is the greatest: 0.6, 0.096, 0.591, 0.66? (a) 0.6 (b) 0.096 (c) 0.591 (d) 0.66
  7. 7.Which is the smallest: 0.46, 0.323, 0.4, 0.065? (a) 0.46 (b) 0.323 (c) 0.4 (d) 0.065
  8. 8.Which is the smallest: 0.81, 0.8, 0.078, 0.799? (a) 0.81 (b) 0.8 (c) 0.078 (d) 0.799
  9. 9.7.21 + 8.5 = ? (a) 15.71 (b) 8.06 (c) 15.81 (d) 15.61
  10. 10.What is the value of the digit 2 in 98.231? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  11. 11.3.24 + 6.6 = ? (a) 3.9 (b) 9.74 (c) 9.94 (d) 9.84
  12. 12.4.05 + 1.1 = ? (a) 5.25 (b) 4.16 (c) 5.15 (d) 5.05
  13. 13.Which is the greatest: 0.091, 0.581, 0.62, 0.6? (a) 0.091 (b) 0.581 (c) 0.62 (d) 0.6
  14. 14.5.46 + 3.7 = ? (a) 5.83 (b) 9.26 (c) 9.06 (d) 9.16
  15. 15.What is the value of the digit 4 in 43.129? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  16. 16.What is the value of the digit 4 in 25.467? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  17. 17.Which is the smallest: 0.2, 0.189, 0.22, 0.068? (a) 0.2 (b) 0.189 (c) 0.22 (d) 0.068
  18. 18.1.43 + 1.2 = ? (a) 2.53 (b) 1.55 (c) 2.73 (d) 2.63
  19. 19.Which is the greatest: 0.039, 0.5, 0.52, 0.482? (a) 0.039 (b) 0.5 (c) 0.52 (d) 0.482
  20. 20.9.32 + 9.5 = ? (a) 18.92 (b) 18.72 (c) 10.27 (d) 18.82
  21. 21.What is the value of the digit 1 in 56.817? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  22. 22.What is the value of the digit 2 in 21.948? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  23. 23.Which is the greatest: 0.273, 0.3, 0.094, 0.38? (a) 0.273 (b) 0.3 (c) 0.094 (d) 0.38
  24. 24.5.88 + 8.1 = ? (a) 13.88 (b) 14.08 (c) 6.69 (d) 13.98
  25. 25.What is the value of the digit 6 in 78.649? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  26. 26.4.32 + 9.8 = ? (a) 14.02 (b) 14.12 (c) 5.3 (d) 14.22
  27. 27.1.43 + 5.4 = ? (a) 1.97 (b) 6.93 (c) 6.83 (d) 6.73
  28. 28.4.99 + 7.7 = ? (a) 5.76 (b) 12.79 (c) 12.69 (d) 12.59
  29. 29.What is the value of the digit 9 in 16.429? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  30. 30.What is the value of the digit 4 in 36.417? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  31. 31.What is the value of the digit 3 in 61.937? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  32. 32.Which is the smallest: 0.033, 0.783, 0.87, 0.8? (a) 0.033 (b) 0.783 (c) 0.87 (d) 0.8
  33. 33.8.07 + 3.2 = ? (a) 8.39 (b) 11.17 (c) 11.27 (d) 11.37
  34. 34.6.25 + 4.1 = ? (a) 10.25 (b) 10.35 (c) 10.45 (d) 6.66
  35. 35.What is the value of the digit 5 in 62.958? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  36. 36.What is the value of the digit 3 in 34.891? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  37. 37.Which is the smallest: 0.015, 0.8, 0.781, 0.84? (a) 0.015 (b) 0.8 (c) 0.781 (d) 0.84
  38. 38.1.14 + 1.9 = ? (a) 2.94 (b) 3.14 (c) 3.04 (d) 1.33
  39. 39.What is the value of the digit 2 in 93.562? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  40. 40.Which is the greatest: 0.635, 0.79, 0.055, 0.7? (a) 0.635 (b) 0.79 (c) 0.055 (d) 0.7

Answer key

  1. 6.02
  2. 0.04
  3. 0.082
  4. 7.56
  5. 11.55
  6. 0.66
  7. 0.065
  8. 0.078
  9. 15.71
  10. 0.2
  11. 9.84
  12. 5.15
  13. 0.62
  14. 9.16
  15. 40
  16. 0.4
  17. 0.068
  18. 2.63
  19. 0.52
  20. 18.82
  21. 0.01
  22. 20
  23. 0.38
  24. 13.98
  25. 0.6
  26. 14.12
  27. 6.83
  28. 12.69
  29. 0.009
  30. 0.4
  31. 0.03
  32. 0.033
  33. 11.27
  34. 10.35
  35. 0.05
  36. 30
  37. 0.015
  38. 3.04
  39. 0.002
  40. 0.79

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