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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 80 · 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 6 in 24.156? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  2. 2.Which is the smallest: 0.072, 0.8, 0.84, 0.726? (a) 0.072 (b) 0.8 (c) 0.84 (d) 0.726
  3. 3.4.01 + 7.2 = ? (a) 11.11 (b) 11.31 (c) 11.21 (d) 4.73
  4. 4.5.76 + 7.2 = ? (a) 13.06 (b) 12.86 (c) 12.96 (d) 6.48
  5. 5.Which is the greatest: 0.8, 0.012, 0.89, 0.728? (a) 0.8 (b) 0.012 (c) 0.89 (d) 0.728
  6. 6.What is the value of the digit 5 in 23.518? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  7. 7.What is the value of the digit 1 in 18.324? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  8. 8.8.63 + 1.8 = ? (a) 10.53 (b) 10.33 (c) 8.81 (d) 10.43
  9. 9.4.37 + 1.8 = ? (a) 4.55 (b) 6.07 (c) 6.27 (d) 6.17
  10. 10.Which is the greatest: 0.256, 0.073, 0.39, 0.3? (a) 0.256 (b) 0.073 (c) 0.39 (d) 0.3
  11. 11.Which is the greatest: 0.015, 0.8, 0.777, 0.88? (a) 0.015 (b) 0.8 (c) 0.777 (d) 0.88
  12. 12.What is the value of the digit 9 in 12.569? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  13. 13.What is the value of the digit 2 in 29.584? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  14. 14.Which is the greatest: 0.568, 0.035, 0.68, 0.6? (a) 0.568 (b) 0.035 (c) 0.68 (d) 0.6
  15. 15.What is the value of the digit 5 in 36.581? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  16. 16.9.73 + 9.8 = ? (a) 19.53 (b) 19.63 (c) 19.43 (d) 10.71
  17. 17.What is the value of the digit 5 in 57.123? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  18. 18.8.69 + 9.9 = ? (a) 18.59 (b) 9.68 (c) 18.69 (d) 18.49
  19. 19.Which is the smallest: 0.048, 0.25, 0.2, 0.114? (a) 0.048 (b) 0.25 (c) 0.2 (d) 0.114
  20. 20.Which is the greatest: 0.538, 0.019, 0.6, 0.61? (a) 0.538 (b) 0.019 (c) 0.6 (d) 0.61
  21. 21.Which is the greatest: 0.454, 0.59, 0.021, 0.5? (a) 0.454 (b) 0.59 (c) 0.021 (d) 0.5
  22. 22.What is the value of the digit 9 in 76.892? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  23. 23.What is the value of the digit 9 in 48.269? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  24. 24.Which is the greatest: 0.077, 0.163, 0.27, 0.2? (a) 0.077 (b) 0.163 (c) 0.27 (d) 0.2
  25. 25.6.02 + 2.4 = ? (a) 6.26 (b) 8.42 (c) 8.32 (d) 8.52
  26. 26.5.98 + 8.5 = ? (a) 6.83 (b) 14.38 (c) 14.58 (d) 14.48
  27. 27.7.38 + 4.2 = ? (a) 11.68 (b) 7.8 (c) 11.48 (d) 11.58
  28. 28.1.64 + 2.1 = ? (a) 1.85 (b) 3.64 (c) 3.74 (d) 3.84
  29. 29.Which is the smallest: 0.2, 0.164, 0.25, 0.041? (a) 0.2 (b) 0.164 (c) 0.25 (d) 0.041
  30. 30.3.51 + 4.2 = ? (a) 7.61 (b) 7.81 (c) 7.71 (d) 3.93
  31. 31.What is the value of the digit 3 in 76.359? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  32. 32.Which is the greatest: 0.3, 0.264, 0.079, 0.36? (a) 0.3 (b) 0.264 (c) 0.079 (d) 0.36
  33. 33.5.42 + 2.1 = ? (a) 7.52 (b) 5.63 (c) 7.62 (d) 7.42
  34. 34.Which is the smallest: 0.5, 0.096, 0.54, 0.439? (a) 0.5 (b) 0.096 (c) 0.54 (d) 0.439
  35. 35.Which is the smallest: 0.373, 0.46, 0.4, 0.074? (a) 0.373 (b) 0.46 (c) 0.4 (d) 0.074
  36. 36.Which is the smallest: 0.6, 0.069, 0.554, 0.61? (a) 0.6 (b) 0.069 (c) 0.554 (d) 0.61
  37. 37.What is the value of the digit 9 in 24.569? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  38. 38.Which is the greatest: 0.22, 0.2, 0.187, 0.067? (a) 0.22 (b) 0.2 (c) 0.187 (d) 0.067
  39. 39.7.67 + 8.4 = ? (a) 15.97 (b) 8.51 (c) 16.07 (d) 16.17
  40. 40.Which is the smallest: 0.2, 0.21, 0.099, 0.133? (a) 0.2 (b) 0.21 (c) 0.099 (d) 0.133

Answer key

  1. 0.006
  2. 0.072
  3. 11.21
  4. 12.96
  5. 0.89
  6. 0.5
  7. 10
  8. 10.43
  9. 6.17
  10. 0.39
  11. 0.88
  12. 0.009
  13. 20
  14. 0.68
  15. 0.5
  16. 19.53
  17. 50
  18. 18.59
  19. 0.048
  20. 0.61
  21. 0.59
  22. 0.09
  23. 0.009
  24. 0.27
  25. 8.42
  26. 14.48
  27. 11.58
  28. 3.74
  29. 0.041
  30. 7.71
  31. 0.3
  32. 0.36
  33. 7.52
  34. 0.096
  35. 0.074
  36. 0.069
  37. 0.009
  38. 0.22
  39. 16.07
  40. 0.099

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