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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 328 · 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. 1.5.03 + 9.5 = ? (a) 14.43 (b) 5.98 (c) 14.63 (d) 14.53
  2. 2.1.54 + 4.4 = ? (a) 1.98 (b) 6.04 (c) 5.84 (d) 5.94
  3. 3.8.79 + 8.1 = ? (a) 16.89 (b) 9.6 (c) 16.79 (d) 16.99
  4. 4.What is the value of the digit 3 in 36.128? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  5. 5.Which is the smallest: 0.052, 0.571, 0.65, 0.6? (a) 0.052 (b) 0.571 (c) 0.65 (d) 0.6
  6. 6.5.01 + 8.8 = ? (a) 13.71 (b) 13.81 (c) 5.89 (d) 13.91
  7. 7.3.87 + 3.9 = ? (a) 4.26 (b) 7.87 (c) 7.67 (d) 7.77
  8. 8.What is the value of the digit 1 in 54.321? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  9. 9.Which is the smallest: 0.513, 0.6, 0.62, 0.088? (a) 0.513 (b) 0.6 (c) 0.62 (d) 0.088
  10. 10.9.71 + 5.2 = ? (a) 10.23 (b) 14.81 (c) 15.01 (d) 14.91
  11. 11.8.34 + 3.8 = ? (a) 12.14 (b) 12.04 (c) 8.72 (d) 12.24
  12. 12.Which is the greatest: 0.88, 0.722, 0.071, 0.8? (a) 0.88 (b) 0.722 (c) 0.071 (d) 0.8
  13. 13.What is the value of the digit 3 in 51.378? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  14. 14.What is the value of the digit 6 in 85.976? (a) 6 (b) 0.6 (c) 0.006 (d) 0.06
  15. 15.6.12 + 9.6 = ? (a) 7.08 (b) 15.62 (c) 15.72 (d) 15.82
  16. 16.What is the value of the digit 4 in 43.972? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  17. 17.8.15 + 2.8 = ? (a) 10.85 (b) 8.43 (c) 10.95 (d) 11.05
  18. 18.6.89 + 3.1 = ? (a) 9.89 (b) 10.09 (c) 9.99 (d) 7.2
  19. 19.8.72 + 6.8 = ? (a) 15.62 (b) 9.4 (c) 15.42 (d) 15.52
  20. 20.4.53 + 2.3 = ? (a) 6.73 (b) 6.83 (c) 4.76 (d) 6.93
  21. 21.3.06 + 1.5 = ? (a) 4.66 (b) 4.46 (c) 4.56 (d) 3.21
  22. 22.9.85 + 1.7 = ? (a) 11.45 (b) 11.65 (c) 10.02 (d) 11.55
  23. 23.What is the value of the digit 8 in 26.893? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  24. 24.What is the value of the digit 7 in 91.738? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  25. 25.Which is the greatest: 0.062, 0.85, 0.8, 0.735? (a) 0.062 (b) 0.85 (c) 0.8 (d) 0.735
  26. 26.Which is the smallest: 0.81, 0.718, 0.064, 0.8? (a) 0.81 (b) 0.718 (c) 0.064 (d) 0.8
  27. 27.Which is the smallest: 0.64, 0.578, 0.031, 0.6? (a) 0.64 (b) 0.578 (c) 0.031 (d) 0.6
  28. 28.7.53 + 6.1 = ? (a) 13.73 (b) 13.63 (c) 8.14 (d) 13.53
  29. 29.What is the value of the digit 7 in 17.432? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  30. 30.Which is the smallest: 0.8, 0.014, 0.85, 0.767? (a) 0.8 (b) 0.014 (c) 0.85 (d) 0.767
  31. 31.What is the value of the digit 8 in 34.281? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  32. 32.7.11 + 4.4 = ? (a) 11.41 (b) 11.61 (c) 11.51 (d) 7.55
  33. 33.What is the value of the digit 8 in 23.548? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  34. 34.5.38 + 1.2 = ? (a) 6.58 (b) 6.68 (c) 6.48 (d) 5.5
  35. 35.3.48 + 3.4 = ? (a) 3.82 (b) 6.88 (c) 6.78 (d) 6.98
  36. 36.2.11 + 2.8 = ? (a) 4.81 (b) 4.91 (c) 2.39 (d) 5.01
  37. 37.Which is the greatest: 0.2, 0.049, 0.27, 0.131? (a) 0.2 (b) 0.049 (c) 0.27 (d) 0.131
  38. 38.What is the value of the digit 6 in 61.235? (a) 0.6 (b) 6 (c) 60 (d) 0.06
  39. 39.6.91 + 5.1 = ? (a) 12.11 (b) 11.91 (c) 12.01 (d) 7.42
  40. 40.What is the value of the digit 7 in 79.458? (a) 70 (b) 0.07 (c) 7 (d) 0.7

Answer key

  1. 14.53
  2. 5.94
  3. 16.89
  4. 30
  5. 0.052
  6. 13.81
  7. 7.77
  8. 0.001
  9. 0.088
  10. 14.91
  11. 12.14
  12. 0.88
  13. 0.3
  14. 0.006
  15. 15.72
  16. 40
  17. 10.95
  18. 9.99
  19. 15.52
  20. 6.83
  21. 4.56
  22. 11.55
  23. 0.8
  24. 0.7
  25. 0.85
  26. 0.064
  27. 0.031
  28. 13.63
  29. 7
  30. 0.014
  31. 0.08
  32. 11.51
  33. 0.008
  34. 6.58
  35. 6.88
  36. 4.91
  37. 0.27
  38. 60
  39. 12.01
  40. 70

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