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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 447 · 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: 0.056, 0.62, 0.522, 0.6? (a) 0.056 (b) 0.62 (c) 0.522 (d) 0.6
  2. 2.5.39 + 2.3 = ? (a) 7.59 (b) 7.69 (c) 5.62 (d) 7.79
  3. 3.1.46 + 2.3 = ? (a) 3.66 (b) 3.86 (c) 3.76 (d) 1.69
  4. 4.What is the value of the digit 8 in 47.831? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  5. 5.Which is the greatest: 0.524, 0.052, 0.61, 0.6? (a) 0.524 (b) 0.052 (c) 0.61 (d) 0.6
  6. 6.Which is the greatest: 0.157, 0.28, 0.023, 0.2? (a) 0.157 (b) 0.28 (c) 0.023 (d) 0.2
  7. 7.1.81 + 7.8 = ? (a) 9.71 (b) 9.51 (c) 9.61 (d) 2.59
  8. 8.Which is the greatest: 0.016, 0.464, 0.52, 0.5? (a) 0.016 (b) 0.464 (c) 0.52 (d) 0.5
  9. 9.Which is the greatest: 0.015, 0.8, 0.731, 0.84? (a) 0.015 (b) 0.8 (c) 0.731 (d) 0.84
  10. 10.9.22 + 3.7 = ? (a) 13.02 (b) 12.92 (c) 9.59 (d) 12.82
  11. 11.What is the value of the digit 9 in 59.312? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  12. 12.What is the value of the digit 7 in 73.164? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  13. 13.2.64 + 4.7 = ? (a) 3.11 (b) 7.34 (c) 7.24 (d) 7.44
  14. 14.What is the value of the digit 5 in 52.841? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  15. 15.What is the value of the digit 1 in 51.279? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  16. 16.6.76 + 1.6 = ? (a) 6.92 (b) 8.26 (c) 8.36 (d) 8.46
  17. 17.What is the value of the digit 6 in 36.528? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  18. 18.Which is the smallest: 0.194, 0.2, 0.23, 0.012? (a) 0.194 (b) 0.2 (c) 0.23 (d) 0.012
  19. 19.1.97 + 8.6 = ? (a) 2.83 (b) 10.47 (c) 10.57 (d) 10.67
  20. 20.What is the value of the digit 2 in 68.423? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  21. 21.What is the value of the digit 3 in 21.938? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  22. 22.8.21 + 4.1 = ? (a) 8.62 (b) 12.31 (c) 12.21 (d) 12.41
  23. 23.What is the value of the digit 9 in 98.521? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  24. 24.3.41 + 1.2 = ? (a) 4.71 (b) 4.61 (c) 4.51 (d) 3.53
  25. 25.9.07 + 9.8 = ? (a) 10.05 (b) 18.77 (c) 18.87 (d) 18.97
  26. 26.8.24 + 1.7 = ? (a) 10.04 (b) 8.41 (c) 9.84 (d) 9.94
  27. 27.What is the value of the digit 4 in 38.164? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  28. 28.Which is the greatest: 0.351, 0.45, 0.4, 0.055? (a) 0.351 (b) 0.45 (c) 0.4 (d) 0.055
  29. 29.Which is the greatest: 0.8, 0.769, 0.044, 0.86? (a) 0.8 (b) 0.769 (c) 0.044 (d) 0.86
  30. 30.What is the value of the digit 3 in 53.764? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  31. 31.Which is the smallest: 0.3, 0.253, 0.063, 0.32? (a) 0.3 (b) 0.253 (c) 0.063 (d) 0.32
  32. 32.Which is the smallest: 0.797, 0.035, 0.8, 0.86? (a) 0.797 (b) 0.035 (c) 0.8 (d) 0.86
  33. 33.Which is the greatest: 0.7, 0.676, 0.089, 0.73? (a) 0.7 (b) 0.676 (c) 0.089 (d) 0.73
  34. 34.What is the value of the digit 3 in 31.265? (a) 30 (b) 0.3 (c) 0.03 (d) 3
  35. 35.Which is the smallest: 0.089, 0.8, 0.89, 0.762? (a) 0.089 (b) 0.8 (c) 0.89 (d) 0.762
  36. 36.9.55 + 5.7 = ? (a) 15.25 (b) 15.15 (c) 15.35 (d) 10.12
  37. 37.Which is the smallest: 0.294, 0.3, 0.37, 0.034? (a) 0.294 (b) 0.3 (c) 0.37 (d) 0.034
  38. 38.3.36 + 2.7 = ? (a) 6.06 (b) 5.96 (c) 3.63 (d) 6.16
  39. 39.Which is the smallest: 0.4, 0.076, 0.313, 0.41? (a) 0.4 (b) 0.076 (c) 0.313 (d) 0.41
  40. 40.Which is the greatest: 0.086, 0.45, 0.4, 0.347? (a) 0.086 (b) 0.45 (c) 0.4 (d) 0.347

Answer key

  1. 0.056
  2. 7.69
  3. 3.76
  4. 0.8
  5. 0.61
  6. 0.28
  7. 9.61
  8. 0.52
  9. 0.84
  10. 12.92
  11. 9
  12. 70
  13. 7.34
  14. 50
  15. 1
  16. 8.36
  17. 6
  18. 0.012
  19. 10.57
  20. 0.02
  21. 0.03
  22. 12.31
  23. 90
  24. 4.61
  25. 18.87
  26. 9.94
  27. 0.004
  28. 0.45
  29. 0.86
  30. 3
  31. 0.063
  32. 0.035
  33. 0.73
  34. 30
  35. 0.089
  36. 15.25
  37. 0.034
  38. 6.06
  39. 0.076
  40. 0.45

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