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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 670 · 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.What is the value of the digit 3 in 32.845? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  2. 2.1.96 + 2.6 = ? (a) 4.56 (b) 4.66 (c) 2.22 (d) 4.46
  3. 3.1.99 + 4.5 = ? (a) 6.59 (b) 6.49 (c) 6.39 (d) 2.44
  4. 4.Which is the greatest: 0.5, 0.51, 0.065, 0.484? (a) 0.5 (b) 0.51 (c) 0.065 (d) 0.484
  5. 5.4.75 + 7.9 = ? (a) 12.55 (b) 5.54 (c) 12.65 (d) 12.75
  6. 6.Which is the greatest: 0.094, 0.2, 0.27, 0.163? (a) 0.094 (b) 0.2 (c) 0.27 (d) 0.163
  7. 7.What is the value of the digit 7 in 46.725? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  8. 8.What is the value of the digit 3 in 25.163? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  9. 9.Which is the smallest: 0.2, 0.189, 0.023, 0.22? (a) 0.2 (b) 0.189 (c) 0.023 (d) 0.22
  10. 10.What is the value of the digit 5 in 13.759? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  11. 11.Which is the greatest: 0.799, 0.8, 0.82, 0.061? (a) 0.799 (b) 0.8 (c) 0.82 (d) 0.061
  12. 12.4.07 + 3.5 = ? (a) 4.42 (b) 7.67 (c) 7.57 (d) 7.47
  13. 13.What is the value of the digit 9 in 89.613? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  14. 14.8.53 + 5.7 = ? (a) 14.23 (b) 14.33 (c) 14.13 (d) 9.1
  15. 15.What is the value of the digit 2 in 25.146? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  16. 16.What is the value of the digit 4 in 62.947? (a) 0.04 (b) 0.004 (c) 0.4 (d) 4
  17. 17.7.47 + 4.6 = ? (a) 12.17 (b) 11.97 (c) 12.07 (d) 7.93
  18. 18.9.19 + 9.2 = ? (a) 10.11 (b) 18.29 (c) 18.39 (d) 18.49
  19. 19.8.34 + 2.2 = ? (a) 10.44 (b) 10.64 (c) 10.54 (d) 8.56
  20. 20.Which is the smallest: 0.35, 0.036, 0.3, 0.252? (a) 0.35 (b) 0.036 (c) 0.3 (d) 0.252
  21. 21.4.88 + 3.1 = ? (a) 5.19 (b) 7.88 (c) 8.08 (d) 7.98
  22. 22.What is the value of the digit 4 in 92.438? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  23. 23.What is the value of the digit 2 in 13.726? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  24. 24.Which is the greatest: 0.048, 0.611, 0.77, 0.7? (a) 0.048 (b) 0.611 (c) 0.77 (d) 0.7
  25. 25.Which is the greatest: 0.539, 0.67, 0.6, 0.065? (a) 0.539 (b) 0.67 (c) 0.6 (d) 0.065
  26. 26.What is the value of the digit 6 in 62.137? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  27. 27.Which is the smallest: 0.329, 0.49, 0.4, 0.095? (a) 0.329 (b) 0.49 (c) 0.4 (d) 0.095
  28. 28.Which is the smallest: 0.8, 0.084, 0.82, 0.794? (a) 0.8 (b) 0.084 (c) 0.82 (d) 0.794
  29. 29.What is the value of the digit 1 in 84.516? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  30. 30.Which is the greatest: 0.4, 0.038, 0.48, 0.371? (a) 0.4 (b) 0.038 (c) 0.48 (d) 0.371
  31. 31.2.43 + 5.1 = ? (a) 7.43 (b) 7.63 (c) 7.53 (d) 2.94
  32. 32.Which is the greatest: 0.063, 0.396, 0.4, 0.41? (a) 0.063 (b) 0.396 (c) 0.4 (d) 0.41
  33. 33.7.65 + 6.1 = ? (a) 13.65 (b) 13.75 (c) 8.26 (d) 13.85
  34. 34.Which is the smallest: 0.647, 0.71, 0.7, 0.099? (a) 0.647 (b) 0.71 (c) 0.7 (d) 0.099
  35. 35.What is the value of the digit 6 in 57.936? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  36. 36.Which is the smallest: 0.088, 0.8, 0.782, 0.83? (a) 0.088 (b) 0.8 (c) 0.782 (d) 0.83
  37. 37.Which is the greatest: 0.031, 0.32, 0.3, 0.251? (a) 0.031 (b) 0.32 (c) 0.3 (d) 0.251
  38. 38.Which is the greatest: 0.35, 0.221, 0.3, 0.056? (a) 0.35 (b) 0.221 (c) 0.3 (d) 0.056
  39. 39.7.98 + 6.9 = ? (a) 14.88 (b) 8.67 (c) 14.98 (d) 14.78
  40. 40.8.35 + 4.1 = ? (a) 8.76 (b) 12.35 (c) 12.55 (d) 12.45

Answer key

  1. 30
  2. 4.56
  3. 6.49
  4. 0.51
  5. 12.65
  6. 0.27
  7. 0.7
  8. 0.003
  9. 0.023
  10. 0.05
  11. 0.82
  12. 7.57
  13. 9
  14. 14.23
  15. 20
  16. 0.04
  17. 12.07
  18. 18.39
  19. 10.54
  20. 0.036
  21. 7.98
  22. 0.4
  23. 0.02
  24. 0.77
  25. 0.67
  26. 60
  27. 0.095
  28. 0.084
  29. 0.01
  30. 0.48
  31. 7.53
  32. 0.41
  33. 13.75
  34. 0.099
  35. 0.006
  36. 0.088
  37. 0.32
  38. 0.35
  39. 14.88
  40. 12.45

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