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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 648 · 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. 1.3.45 + 3.4 = ? (a) 6.85 (b) 3.79 (c) 6.75 (d) 6.95
  2. 2.What is the value of the digit 2 in 12.536? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  3. 3.Which is the greatest: 0.43, 0.4, 0.312, 0.093? (a) 0.43 (b) 0.4 (c) 0.312 (d) 0.093
  4. 4.8.32 + 5.1 = ? (a) 13.32 (b) 13.42 (c) 13.52 (d) 8.83
  5. 5.What is the value of the digit 5 in 34.285? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  6. 6.9.15 + 6.9 = ? (a) 9.84 (b) 16.05 (c) 16.15 (d) 15.95
  7. 7.1.94 + 1.3 = ? (a) 2.07 (b) 3.14 (c) 3.34 (d) 3.24
  8. 8.What is the value of the digit 9 in 93.481? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  9. 9.What is the value of the digit 8 in 62.874? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  10. 10.What is the value of the digit 1 in 51.896? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  11. 11.What is the value of the digit 1 in 72.138? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  12. 12.Which is the smallest: 0.29, 0.118, 0.056, 0.2? (a) 0.29 (b) 0.118 (c) 0.056 (d) 0.2
  13. 13.What is the value of the digit 5 in 86.495? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  14. 14.What is the value of the digit 8 in 91.584? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  15. 15.What is the value of the digit 9 in 52.194? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  16. 16.Which is the smallest: 0.5, 0.59, 0.484, 0.025? (a) 0.5 (b) 0.59 (c) 0.484 (d) 0.025
  17. 17.Which is the smallest: 0.224, 0.3, 0.37, 0.096? (a) 0.224 (b) 0.3 (c) 0.37 (d) 0.096
  18. 18.Which is the greatest: 0.66, 0.6, 0.081, 0.577? (a) 0.66 (b) 0.6 (c) 0.081 (d) 0.577
  19. 19.What is the value of the digit 4 in 19.724? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  20. 20.8.01 + 5.8 = ? (a) 13.81 (b) 13.91 (c) 13.71 (d) 8.59
  21. 21.Which is the greatest: 0.091, 0.43, 0.4, 0.355? (a) 0.091 (b) 0.43 (c) 0.4 (d) 0.355
  22. 22.7.06 + 2.5 = ? (a) 9.66 (b) 7.31 (c) 9.46 (d) 9.56
  23. 23.Which is the smallest: 0.096, 0.74, 0.647, 0.7? (a) 0.096 (b) 0.74 (c) 0.647 (d) 0.7
  24. 24.3.31 + 2.9 = ? (a) 6.11 (b) 3.6 (c) 6.21 (d) 6.31
  25. 25.3.43 + 4.3 = ? (a) 7.63 (b) 7.73 (c) 7.83 (d) 3.86
  26. 26.Which is the smallest: 0.7, 0.72, 0.078, 0.613? (a) 0.7 (b) 0.72 (c) 0.078 (d) 0.613
  27. 27.Which is the smallest: 0.095, 0.8, 0.89, 0.718? (a) 0.095 (b) 0.8 (c) 0.89 (d) 0.718
  28. 28.7.63 + 5.1 = ? (a) 12.63 (b) 12.73 (c) 8.14 (d) 12.83
  29. 29.Which is the smallest: 0.023, 0.31, 0.227, 0.3? (a) 0.023 (b) 0.31 (c) 0.227 (d) 0.3
  30. 30.Which is the greatest: 0.63, 0.033, 0.541, 0.6? (a) 0.63 (b) 0.033 (c) 0.541 (d) 0.6
  31. 31.1.47 + 5.4 = ? (a) 6.97 (b) 6.77 (c) 6.87 (d) 2.01
  32. 32.What is the value of the digit 8 in 39.821? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  33. 33.9.65 + 6.4 = ? (a) 10.29 (b) 16.15 (c) 15.95 (d) 16.05
  34. 34.What is the value of the digit 2 in 64.852? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  35. 35.Which is the greatest: 0.013, 0.3, 0.225, 0.39? (a) 0.013 (b) 0.3 (c) 0.225 (d) 0.39
  36. 36.2.79 + 7.4 = ? (a) 10.29 (b) 10.09 (c) 10.19 (d) 3.53
  37. 37.3.74 + 2.5 = ? (a) 6.14 (b) 6.34 (c) 3.99 (d) 6.24
  38. 38.What is the value of the digit 6 in 71.564? (a) 6 (b) 0.6 (c) 0.006 (d) 0.06
  39. 39.What is the value of the digit 3 in 75.183? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  40. 40.What is the value of the digit 4 in 81.749? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004

Answer key

  1. 6.85
  2. 2
  3. 0.43
  4. 13.42
  5. 0.005
  6. 16.05
  7. 3.24
  8. 90
  9. 0.8
  10. 1
  11. 0.1
  12. 0.056
  13. 0.005
  14. 0.08
  15. 0.09
  16. 0.025
  17. 0.096
  18. 0.66
  19. 0.004
  20. 13.81
  21. 0.43
  22. 9.56
  23. 0.096
  24. 6.21
  25. 7.73
  26. 0.078
  27. 0.095
  28. 12.73
  29. 0.023
  30. 0.63
  31. 6.87
  32. 0.8
  33. 16.05
  34. 0.002
  35. 0.39
  36. 10.19
  37. 6.24
  38. 0.06
  39. 0.003
  40. 0.04

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