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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 274 · 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: 0.31, 0.3, 0.282, 0.023? (a) 0.31 (b) 0.3 (c) 0.282 (d) 0.023
  2. 2.Which is the smallest: 0.391, 0.4, 0.45, 0.054? (a) 0.391 (b) 0.4 (c) 0.45 (d) 0.054
  3. 3.Which is the greatest: 0.2, 0.21, 0.188, 0.089? (a) 0.2 (b) 0.21 (c) 0.188 (d) 0.089
  4. 4.What is the value of the digit 1 in 13.764? (a) 0.01 (b) 0.1 (c) 1 (d) 10
  5. 5.5.85 + 9.1 = ? (a) 15.05 (b) 14.95 (c) 14.85 (d) 6.76
  6. 6.5.91 + 4.1 = ? (a) 10.01 (b) 9.91 (c) 10.11 (d) 6.32
  7. 7.1.36 + 7.1 = ? (a) 8.46 (b) 2.07 (c) 8.56 (d) 8.36
  8. 8.What is the value of the digit 7 in 17.528? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  9. 9.Which is the smallest: 0.39, 0.022, 0.243, 0.3? (a) 0.39 (b) 0.022 (c) 0.243 (d) 0.3
  10. 10.What is the value of the digit 2 in 13.428? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  11. 11.1.88 + 9.8 = ? (a) 2.86 (b) 11.68 (c) 11.58 (d) 11.78
  12. 12.What is the value of the digit 7 in 74.896? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  13. 13.What is the value of the digit 7 in 76.143? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  14. 14.What is the value of the digit 2 in 56.972? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  15. 15.What is the value of the digit 3 in 26.473? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  16. 16.Which is the smallest: 0.4, 0.339, 0.011, 0.48? (a) 0.4 (b) 0.339 (c) 0.011 (d) 0.48
  17. 17.1.83 + 5.7 = ? (a) 7.43 (b) 7.63 (c) 2.4 (d) 7.53
  18. 18.What is the value of the digit 3 in 13.485? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  19. 19.What is the value of the digit 5 in 29.453? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  20. 20.3.32 + 4.3 = ? (a) 7.72 (b) 3.75 (c) 7.62 (d) 7.52
  21. 21.9.61 + 4.7 = ? (a) 10.08 (b) 14.21 (c) 14.41 (d) 14.31
  22. 22.Which is the greatest: 0.077, 0.21, 0.151, 0.2? (a) 0.077 (b) 0.21 (c) 0.151 (d) 0.2
  23. 23.9.56 + 3.9 = ? (a) 9.95 (b) 13.46 (c) 13.36 (d) 13.56
  24. 24.7.22 + 4.2 = ? (a) 7.64 (b) 11.42 (c) 11.32 (d) 11.52
  25. 25.3.12 + 4.1 = ? (a) 7.12 (b) 7.22 (c) 3.53 (d) 7.32
  26. 26.Which is the smallest: 0.633, 0.7, 0.71, 0.036? (a) 0.633 (b) 0.7 (c) 0.71 (d) 0.036
  27. 27.What is the value of the digit 8 in 52.487? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  28. 28.Which is the greatest: 0.5, 0.456, 0.096, 0.51? (a) 0.5 (b) 0.456 (c) 0.096 (d) 0.51
  29. 29.3.37 + 2.1 = ? (a) 5.47 (b) 5.37 (c) 5.57 (d) 3.58
  30. 30.What is the value of the digit 1 in 95.317? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  31. 31.Which is the greatest: 0.38, 0.023, 0.215, 0.3? (a) 0.38 (b) 0.023 (c) 0.215 (d) 0.3
  32. 32.What is the value of the digit 7 in 87.931? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  33. 33.Which is the smallest: 0.011, 0.345, 0.45, 0.4? (a) 0.011 (b) 0.345 (c) 0.45 (d) 0.4
  34. 34.2.04 + 5.2 = ? (a) 7.24 (b) 7.14 (c) 2.56 (d) 7.34
  35. 35.2.83 + 7.1 = ? (a) 9.83 (b) 3.54 (c) 9.93 (d) 10.03
  36. 36.2.76 + 4.3 = ? (a) 7.16 (b) 7.06 (c) 6.96 (d) 3.19
  37. 37.What is the value of the digit 9 in 97.854? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  38. 38.What is the value of the digit 7 in 97.125? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  39. 39.1.62 + 2.1 = ? (a) 3.62 (b) 3.82 (c) 3.72 (d) 1.83
  40. 40.Which is the smallest: 0.34, 0.261, 0.051, 0.3? (a) 0.34 (b) 0.261 (c) 0.051 (d) 0.3

Answer key

  1. 0.31
  2. 0.054
  3. 0.21
  4. 10
  5. 14.95
  6. 10.01
  7. 8.46
  8. 7
  9. 0.022
  10. 0.02
  11. 11.68
  12. 70
  13. 70
  14. 0.002
  15. 0.003
  16. 0.011
  17. 7.53
  18. 3
  19. 0.05
  20. 7.62
  21. 14.31
  22. 0.21
  23. 13.46
  24. 11.42
  25. 7.22
  26. 0.036
  27. 0.08
  28. 0.51
  29. 5.47
  30. 0.01
  31. 0.38
  32. 7
  33. 0.011
  34. 7.24
  35. 9.93
  36. 7.06
  37. 90
  38. 7
  39. 3.72
  40. 0.051

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