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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 561 · 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 greatest: 0.031, 0.413, 0.59, 0.5? (a) 0.031 (b) 0.413 (c) 0.59 (d) 0.5
  2. 2.2.89 + 7.3 = ? (a) 10.29 (b) 10.19 (c) 3.62 (d) 10.09
  3. 3.7.13 + 7.2 = ? (a) 14.33 (b) 14.43 (c) 14.23 (d) 7.85
  4. 4.Which is the smallest: 0.018, 0.119, 0.26, 0.2? (a) 0.018 (b) 0.119 (c) 0.26 (d) 0.2
  5. 5.6.61 + 9.6 = ? (a) 16.31 (b) 16.11 (c) 7.57 (d) 16.21
  6. 6.What is the value of the digit 5 in 54.378? (a) 0.5 (b) 5 (c) 50 (d) 0.05
  7. 7.Which is the smallest: 0.095, 0.47, 0.326, 0.4? (a) 0.095 (b) 0.47 (c) 0.326 (d) 0.4
  8. 8.Which is the greatest: 0.69, 0.6, 0.564, 0.094? (a) 0.69 (b) 0.6 (c) 0.564 (d) 0.094
  9. 9.Which is the smallest: 0.078, 0.38, 0.3, 0.239? (a) 0.078 (b) 0.38 (c) 0.3 (d) 0.239
  10. 10.Which is the greatest: 0.083, 0.315, 0.4, 0.41? (a) 0.083 (b) 0.315 (c) 0.4 (d) 0.41
  11. 11.What is the value of the digit 4 in 68.431? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  12. 12.Which is the greatest: 0.073, 0.174, 0.22, 0.2? (a) 0.073 (b) 0.174 (c) 0.22 (d) 0.2
  13. 13.7.99 + 8.9 = ? (a) 16.99 (b) 16.89 (c) 16.79 (d) 8.88
  14. 14.What is the value of the digit 1 in 16.975? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  15. 15.7.49 + 7.9 = ? (a) 15.29 (b) 15.39 (c) 8.28 (d) 15.49
  16. 16.What is the value of the digit 9 in 74.859? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  17. 17.3.22 + 9.8 = ? (a) 13.12 (b) 12.92 (c) 13.02 (d) 4.2
  18. 18.6.39 + 5.6 = ? (a) 11.89 (b) 12.09 (c) 11.99 (d) 6.95
  19. 19.Which is the smallest: 0.098, 0.51, 0.5, 0.466? (a) 0.098 (b) 0.51 (c) 0.5 (d) 0.466
  20. 20.What is the value of the digit 3 in 38.174? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  21. 21.What is the value of the digit 6 in 65.182? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  22. 22.What is the value of the digit 5 in 87.594? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  23. 23.What is the value of the digit 8 in 92.138? (a) 8 (b) 0.08 (c) 0.8 (d) 0.008
  24. 24.2.11 + 6.1 = ? (a) 8.21 (b) 8.31 (c) 8.11 (d) 2.72
  25. 25.1.18 + 8.9 = ? (a) 9.98 (b) 10.18 (c) 10.08 (d) 2.07
  26. 26.What is the value of the digit 3 in 68.392? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  27. 27.Which is the greatest: 0.028, 0.128, 0.26, 0.2? (a) 0.028 (b) 0.128 (c) 0.26 (d) 0.2
  28. 28.What is the value of the digit 6 in 16.235? (a) 6 (b) 0.06 (c) 60 (d) 0.6
  29. 29.8.69 + 7.2 = ? (a) 15.79 (b) 9.41 (c) 15.99 (d) 15.89
  30. 30.6.21 + 4.5 = ? (a) 10.81 (b) 10.61 (c) 10.71 (d) 6.66
  31. 31.Which is the greatest: 0.068, 0.7, 0.78, 0.687? (a) 0.068 (b) 0.7 (c) 0.78 (d) 0.687
  32. 32.What is the value of the digit 1 in 17.863? (a) 1 (b) 10 (c) 0.1 (d) 0.01
  33. 33.What is the value of the digit 9 in 35.942? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9
  34. 34.8.36 + 5.2 = ? (a) 13.56 (b) 13.66 (c) 8.88 (d) 13.46
  35. 35.Which is the smallest: 0.36, 0.019, 0.3, 0.231? (a) 0.36 (b) 0.019 (c) 0.3 (d) 0.231
  36. 36.What is the value of the digit 1 in 25.631? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  37. 37.7.06 + 9.3 = ? (a) 7.99 (b) 16.36 (c) 16.26 (d) 16.46
  38. 38.What is the value of the digit 2 in 38.162? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  39. 39.What is the value of the digit 8 in 89.261? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  40. 40.4.31 + 9.4 = ? (a) 13.81 (b) 13.71 (c) 13.61 (d) 5.25

Answer key

  1. 0.59
  2. 10.19
  3. 14.33
  4. 0.018
  5. 16.21
  6. 50
  7. 0.095
  8. 0.69
  9. 0.078
  10. 0.41
  11. 0.4
  12. 0.22
  13. 16.89
  14. 10
  15. 15.39
  16. 0.009
  17. 13.02
  18. 11.99
  19. 0.098
  20. 30
  21. 60
  22. 0.5
  23. 0.008
  24. 8.21
  25. 10.08
  26. 0.3
  27. 0.26
  28. 6
  29. 15.89
  30. 10.71
  31. 0.78
  32. 10
  33. 0.9
  34. 13.56
  35. 0.019
  36. 0.001
  37. 16.36
  38. 0.002
  39. 80
  40. 13.71

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