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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 870 · 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. 1.3.24 + 8.8 = ? (a) 11.94 (b) 12.04 (c) 4.12 (d) 12.14
  2. 2.What is the value of the digit 3 in 63.751? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  3. 3.Which is the smallest: 0.86, 0.721, 0.043, 0.8? (a) 0.86 (b) 0.721 (c) 0.043 (d) 0.8
  4. 4.What is the value of the digit 2 in 52.719? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  5. 5.5.81 + 2.9 = ? (a) 8.71 (b) 8.81 (c) 8.61 (d) 6.1
  6. 6.Which is the greatest: 0.718, 0.022, 0.8, 0.82? (a) 0.718 (b) 0.022 (c) 0.8 (d) 0.82
  7. 7.8.31 + 5.5 = ? (a) 8.86 (b) 13.81 (c) 13.71 (d) 13.91
  8. 8.Which is the greatest: 0.011, 0.264, 0.32, 0.3? (a) 0.011 (b) 0.264 (c) 0.32 (d) 0.3
  9. 9.6.09 + 4.8 = ? (a) 10.79 (b) 10.89 (c) 6.57 (d) 10.99
  10. 10.Which is the smallest: 0.031, 0.441, 0.5, 0.55? (a) 0.031 (b) 0.441 (c) 0.5 (d) 0.55
  11. 11.3.01 + 9.1 = ? (a) 12.21 (b) 3.92 (c) 12.11 (d) 12.01
  12. 12.3.56 + 3.1 = ? (a) 3.87 (b) 6.56 (c) 6.76 (d) 6.66
  13. 13.5.84 + 2.1 = ? (a) 8.04 (b) 7.94 (c) 6.05 (d) 7.84
  14. 14.Which is the smallest: 0.7, 0.646, 0.71, 0.015? (a) 0.7 (b) 0.646 (c) 0.71 (d) 0.015
  15. 15.Which is the greatest: 0.4, 0.349, 0.45, 0.012? (a) 0.4 (b) 0.349 (c) 0.45 (d) 0.012
  16. 16.8.12 + 2.6 = ? (a) 10.82 (b) 10.72 (c) 8.38 (d) 10.62
  17. 17.What is the value of the digit 2 in 89.762? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  18. 18.1.65 + 3.9 = ? (a) 5.55 (b) 2.04 (c) 5.65 (d) 5.45
  19. 19.Which is the greatest: 0.099, 0.231, 0.37, 0.3? (a) 0.099 (b) 0.231 (c) 0.37 (d) 0.3
  20. 20.Which is the smallest: 0.633, 0.085, 0.71, 0.7? (a) 0.633 (b) 0.085 (c) 0.71 (d) 0.7
  21. 21.7.61 + 5.1 = ? (a) 8.12 (b) 12.61 (c) 12.71 (d) 12.81
  22. 22.1.81 + 8.7 = ? (a) 10.41 (b) 2.68 (c) 10.51 (d) 10.61
  23. 23.What is the value of the digit 2 in 32.895? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  24. 24.What is the value of the digit 1 in 51.276? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  25. 25.Which is the greatest: 0.7, 0.684, 0.72, 0.051? (a) 0.7 (b) 0.684 (c) 0.72 (d) 0.051
  26. 26.Which is the greatest: 0.211, 0.025, 0.3, 0.35? (a) 0.211 (b) 0.025 (c) 0.3 (d) 0.35
  27. 27.What is the value of the digit 6 in 43.986? (a) 0.6 (b) 6 (c) 0.06 (d) 0.006
  28. 28.1.87 + 7.1 = ? (a) 2.58 (b) 9.07 (c) 8.87 (d) 8.97
  29. 29.What is the value of the digit 1 in 48.217? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  30. 30.4.91 + 1.7 = ? (a) 5.08 (b) 6.61 (c) 6.71 (d) 6.51
  31. 31.Which is the smallest: 0.2, 0.27, 0.168, 0.096? (a) 0.2 (b) 0.27 (c) 0.168 (d) 0.096
  32. 32.8.44 + 1.2 = ? (a) 9.64 (b) 9.54 (c) 9.74 (d) 8.56
  33. 33.Which is the greatest: 0.259, 0.32, 0.3, 0.011? (a) 0.259 (b) 0.32 (c) 0.3 (d) 0.011
  34. 34.8.08 + 1.5 = ? (a) 9.68 (b) 8.23 (c) 9.48 (d) 9.58
  35. 35.What is the value of the digit 3 in 68.935? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  36. 36.What is the value of the digit 7 in 92.467? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  37. 37.6.01 + 5.8 = ? (a) 11.91 (b) 11.71 (c) 11.81 (d) 6.59
  38. 38.What is the value of the digit 5 in 62.159? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  39. 39.2.88 + 7.2 = ? (a) 9.98 (b) 10.08 (c) 3.6 (d) 10.18
  40. 40.4.72 + 7.7 = ? (a) 5.49 (b) 12.52 (c) 12.42 (d) 12.32

Answer key

  1. 12.04
  2. 3
  3. 0.043
  4. 2
  5. 8.71
  6. 0.82
  7. 13.81
  8. 0.32
  9. 10.89
  10. 0.031
  11. 12.11
  12. 6.66
  13. 7.94
  14. 0.015
  15. 0.45
  16. 10.72
  17. 0.002
  18. 5.55
  19. 0.37
  20. 0.085
  21. 12.71
  22. 10.51
  23. 2
  24. 1
  25. 0.72
  26. 0.35
  27. 0.006
  28. 8.97
  29. 0.01
  30. 6.61
  31. 0.096
  32. 9.64
  33. 0.32
  34. 9.58
  35. 0.03
  36. 0.007
  37. 11.81
  38. 0.05
  39. 10.08
  40. 12.42

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