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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 468 · 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 smallest: 0.035, 0.2, 0.162, 0.23? (a) 0.035 (b) 0.2 (c) 0.162 (d) 0.23
  2. 2.5.31 + 2.3 = ? (a) 7.61 (b) 5.54 (c) 7.51 (d) 7.71
  3. 3.7.28 + 2.7 = ? (a) 7.55 (b) 9.98 (c) 10.08 (d) 9.88
  4. 4.What is the value of the digit 9 in 46.937? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  5. 5.Which is the smallest: 0.044, 0.71, 0.632, 0.7? (a) 0.044 (b) 0.71 (c) 0.632 (d) 0.7
  6. 6.What is the value of the digit 5 in 75.849? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  7. 7.What is the value of the digit 2 in 29.584? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  8. 8.Which is the smallest: 0.077, 0.5, 0.52, 0.417? (a) 0.077 (b) 0.5 (c) 0.52 (d) 0.417
  9. 9.Which is the greatest: 0.454, 0.5, 0.56, 0.023? (a) 0.454 (b) 0.5 (c) 0.56 (d) 0.023
  10. 10.6.22 + 3.4 = ? (a) 9.52 (b) 9.62 (c) 9.72 (d) 6.56
  11. 11.What is the value of the digit 2 in 58.234? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  12. 12.What is the value of the digit 3 in 92.438? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  13. 13.Which is the greatest: 0.772, 0.81, 0.071, 0.8? (a) 0.772 (b) 0.81 (c) 0.071 (d) 0.8
  14. 14.What is the value of the digit 5 in 42.357? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  15. 15.What is the value of the digit 7 in 97.243? (a) 0.07 (b) 7 (c) 70 (d) 0.7
  16. 16.1.48 + 4.1 = ? (a) 5.48 (b) 5.58 (c) 1.89 (d) 5.68
  17. 17.What is the value of the digit 3 in 73.851? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  18. 18.1.01 + 4.1 = ? (a) 1.42 (b) 5.01 (c) 5.11 (d) 5.21
  19. 19.Which is the greatest: 0.83, 0.066, 0.8, 0.757? (a) 0.83 (b) 0.066 (c) 0.8 (d) 0.757
  20. 20.1.51 + 2.3 = ? (a) 3.91 (b) 1.74 (c) 3.71 (d) 3.81
  21. 21.What is the value of the digit 1 in 36.175? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  22. 22.Which is the smallest: 0.45, 0.351, 0.023, 0.4? (a) 0.45 (b) 0.351 (c) 0.023 (d) 0.4
  23. 23.Which is the smallest: 0.154, 0.2, 0.058, 0.25? (a) 0.154 (b) 0.2 (c) 0.058 (d) 0.25
  24. 24.Which is the greatest: 0.74, 0.7, 0.641, 0.053? (a) 0.74 (b) 0.7 (c) 0.641 (d) 0.053
  25. 25.Which is the smallest: 0.026, 0.447, 0.5, 0.55? (a) 0.026 (b) 0.447 (c) 0.5 (d) 0.55
  26. 26.Which is the greatest: 0.784, 0.089, 0.8, 0.81? (a) 0.784 (b) 0.089 (c) 0.8 (d) 0.81
  27. 27.What is the value of the digit 8 in 56.819? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  28. 28.What is the value of the digit 7 in 71.429? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  29. 29.What is the value of the digit 9 in 59.614? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  30. 30.4.37 + 4.1 = ? (a) 8.47 (b) 4.78 (c) 8.37 (d) 8.57
  31. 31.4.16 + 5.4 = ? (a) 9.46 (b) 9.56 (c) 9.66 (d) 4.7
  32. 32.7.02 + 7.7 = ? (a) 7.79 (b) 14.62 (c) 14.72 (d) 14.82
  33. 33.What is the value of the digit 1 in 91.725? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  34. 34.1.49 + 1.9 = ? (a) 1.68 (b) 3.49 (c) 3.39 (d) 3.29
  35. 35.2.95 + 1.5 = ? (a) 3.1 (b) 4.55 (c) 4.45 (d) 4.35
  36. 36.1.86 + 5.1 = ? (a) 2.37 (b) 7.06 (c) 6.86 (d) 6.96
  37. 37.Which is the smallest: 0.4, 0.49, 0.067, 0.391? (a) 0.4 (b) 0.49 (c) 0.067 (d) 0.391
  38. 38.Which is the smallest: 0.268, 0.3, 0.033, 0.37? (a) 0.268 (b) 0.3 (c) 0.033 (d) 0.37
  39. 39.2.62 + 3.1 = ? (a) 5.82 (b) 5.62 (c) 2.93 (d) 5.72
  40. 40.7.05 + 9.1 = ? (a) 16.25 (b) 16.05 (c) 7.96 (d) 16.15

Answer key

  1. 0.035
  2. 7.61
  3. 9.98
  4. 0.9
  5. 0.044
  6. 5
  7. 20
  8. 0.077
  9. 0.56
  10. 9.62
  11. 0.2
  12. 0.03
  13. 0.81
  14. 0.05
  15. 7
  16. 5.58
  17. 3
  18. 5.11
  19. 0.83
  20. 3.81
  21. 0.1
  22. 0.023
  23. 0.058
  24. 0.74
  25. 0.026
  26. 0.81
  27. 0.8
  28. 70
  29. 9
  30. 8.47
  31. 9.56
  32. 14.72
  33. 1
  34. 3.39
  35. 4.45
  36. 6.96
  37. 0.067
  38. 0.033
  39. 5.72
  40. 16.15

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