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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 112 · 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 greatest: 0.356, 0.4, 0.054, 0.45? (a) 0.356 (b) 0.4 (c) 0.054 (d) 0.45
  2. 2.5.83 + 1.3 = ? (a) 7.13 (b) 7.03 (c) 7.23 (d) 5.96
  3. 3.9.24 + 4.2 = ? (a) 13.44 (b) 13.34 (c) 13.54 (d) 9.66
  4. 4.2.15 + 2.5 = ? (a) 2.4 (b) 4.65 (c) 4.75 (d) 4.55
  5. 5.3.51 + 7.9 = ? (a) 11.31 (b) 4.3 (c) 11.51 (d) 11.41
  6. 6.Which is the greatest: 0.214, 0.3, 0.031, 0.37? (a) 0.214 (b) 0.3 (c) 0.031 (d) 0.37
  7. 7.What is the value of the digit 2 in 21.359? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  8. 8.What is the value of the digit 8 in 82.379? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  9. 9.3.09 + 9.2 = ? (a) 12.19 (b) 12.39 (c) 4.01 (d) 12.29
  10. 10.What is the value of the digit 3 in 53.812? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  11. 11.What is the value of the digit 6 in 61.728? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  12. 12.Which is the greatest: 0.625, 0.75, 0.7, 0.022? (a) 0.625 (b) 0.75 (c) 0.7 (d) 0.022
  13. 13.9.17 + 2.1 = ? (a) 11.37 (b) 9.38 (c) 11.17 (d) 11.27
  14. 14.Which is the smallest: 0.077, 0.6, 0.517, 0.68? (a) 0.077 (b) 0.6 (c) 0.517 (d) 0.68
  15. 15.5.02 + 5.5 = ? (a) 10.62 (b) 10.42 (c) 5.57 (d) 10.52
  16. 16.Which is the greatest: 0.498, 0.062, 0.5, 0.58? (a) 0.498 (b) 0.062 (c) 0.5 (d) 0.58
  17. 17.9.11 + 6.1 = ? (a) 15.11 (b) 15.31 (c) 15.21 (d) 9.72
  18. 18.5.92 + 8.9 = ? (a) 14.92 (b) 14.72 (c) 14.82 (d) 6.81
  19. 19.Which is the greatest: 0.791, 0.88, 0.049, 0.8? (a) 0.791 (b) 0.88 (c) 0.049 (d) 0.8
  20. 20.4.41 + 2.6 = ? (a) 7.11 (b) 4.67 (c) 6.91 (d) 7.01
  21. 21.2.33 + 9.5 = ? (a) 11.83 (b) 11.93 (c) 11.73 (d) 3.28
  22. 22.8.82 + 2.4 = ? (a) 11.32 (b) 11.22 (c) 9.06 (d) 11.12
  23. 23.What is the value of the digit 7 in 41.273? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  24. 24.What is the value of the digit 2 in 37.952? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  25. 25.Which is the smallest: 0.036, 0.788, 0.8, 0.85? (a) 0.036 (b) 0.788 (c) 0.8 (d) 0.85
  26. 26.Which is the greatest: 0.3, 0.34, 0.064, 0.256? (a) 0.3 (b) 0.34 (c) 0.064 (d) 0.256
  27. 27.What is the value of the digit 1 in 18.742? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  28. 28.5.49 + 7.2 = ? (a) 12.59 (b) 12.69 (c) 6.21 (d) 12.79
  29. 29.What is the value of the digit 9 in 91.465? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  30. 30.What is the value of the digit 1 in 87.134? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  31. 31.Which is the greatest: 0.076, 0.79, 0.665, 0.7? (a) 0.076 (b) 0.79 (c) 0.665 (d) 0.7
  32. 32.Which is the greatest: 0.216, 0.31, 0.3, 0.054? (a) 0.216 (b) 0.31 (c) 0.3 (d) 0.054
  33. 33.Which is the greatest: 0.067, 0.5, 0.52, 0.458? (a) 0.067 (b) 0.5 (c) 0.52 (d) 0.458
  34. 34.Which is the smallest: 0.027, 0.181, 0.2, 0.22? (a) 0.027 (b) 0.181 (c) 0.2 (d) 0.22
  35. 35.Which is the greatest: 0.172, 0.2, 0.22, 0.083? (a) 0.172 (b) 0.2 (c) 0.22 (d) 0.083
  36. 36.Which is the greatest: 0.039, 0.36, 0.3, 0.231? (a) 0.039 (b) 0.36 (c) 0.3 (d) 0.231
  37. 37.1.21 + 8.1 = ? (a) 2.02 (b) 9.31 (c) 9.41 (d) 9.21
  38. 38.Which is the greatest: 0.069, 0.75, 0.667, 0.7? (a) 0.069 (b) 0.75 (c) 0.667 (d) 0.7
  39. 39.What is the value of the digit 3 in 35.124? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  40. 40.What is the value of the digit 3 in 23.781? (a) 30 (b) 0.3 (c) 3 (d) 0.03

Answer key

  1. 0.45
  2. 7.13
  3. 13.44
  4. 4.65
  5. 11.41
  6. 0.37
  7. 20
  8. 80
  9. 12.29
  10. 3
  11. 60
  12. 0.75
  13. 11.27
  14. 0.077
  15. 10.52
  16. 0.58
  17. 15.21
  18. 14.82
  19. 0.88
  20. 7.01
  21. 11.83
  22. 11.22
  23. 0.07
  24. 0.002
  25. 0.036
  26. 0.34
  27. 10
  28. 12.69
  29. 90
  30. 0.1
  31. 0.79
  32. 0.31
  33. 0.52
  34. 0.027
  35. 0.22
  36. 0.36
  37. 9.31
  38. 0.75
  39. 30
  40. 3

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