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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 719 · 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. 1.6.06 + 3.6 = ? (a) 6.42 (b) 9.56 (c) 9.76 (d) 9.66
  2. 2.What is the value of the digit 8 in 21.738? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  3. 3.2.79 + 7.6 = ? (a) 3.55 (b) 10.49 (c) 10.29 (d) 10.39
  4. 4.What is the value of the digit 8 in 18.596? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  5. 5.Which is the smallest: 0.79, 0.642, 0.022, 0.7? (a) 0.79 (b) 0.642 (c) 0.022 (d) 0.7
  6. 6.8.71 + 2.8 = ? (a) 11.51 (b) 11.61 (c) 8.99 (d) 11.41
  7. 7.What is the value of the digit 3 in 78.153? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  8. 8.8.73 + 3.1 = ? (a) 11.83 (b) 11.93 (c) 11.73 (d) 9.04
  9. 9.Which is the greatest: 0.427, 0.085, 0.52, 0.5? (a) 0.427 (b) 0.085 (c) 0.52 (d) 0.5
  10. 10.4.72 + 9.6 = ? (a) 14.32 (b) 14.22 (c) 14.42 (d) 5.68
  11. 11.Which is the smallest: 0.3, 0.017, 0.33, 0.294? (a) 0.3 (b) 0.017 (c) 0.33 (d) 0.294
  12. 12.Which is the smallest: 0.549, 0.6, 0.67, 0.019? (a) 0.549 (b) 0.6 (c) 0.67 (d) 0.019
  13. 13.Which is the smallest: 0.067, 0.4, 0.42, 0.359? (a) 0.067 (b) 0.4 (c) 0.42 (d) 0.359
  14. 14.5.14 + 1.7 = ? (a) 5.31 (b) 6.74 (c) 6.84 (d) 6.94
  15. 15.Which is the greatest: 0.017, 0.6, 0.589, 0.69? (a) 0.017 (b) 0.6 (c) 0.589 (d) 0.69
  16. 16.5.71 + 1.3 = ? (a) 5.84 (b) 6.91 (c) 7.01 (d) 7.11
  17. 17.What is the value of the digit 2 in 57.162? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  18. 18.Which is the greatest: 0.632, 0.7, 0.068, 0.71? (a) 0.632 (b) 0.7 (c) 0.068 (d) 0.71
  19. 19.2.37 + 5.1 = ? (a) 7.37 (b) 7.47 (c) 2.88 (d) 7.57
  20. 20.What is the value of the digit 6 in 61.354? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  21. 21.Which is the greatest: 0.44, 0.332, 0.4, 0.083? (a) 0.44 (b) 0.332 (c) 0.4 (d) 0.083
  22. 22.Which is the smallest: 0.7, 0.654, 0.78, 0.055? (a) 0.7 (b) 0.654 (c) 0.78 (d) 0.055
  23. 23.Which is the greatest: 0.622, 0.7, 0.74, 0.022? (a) 0.622 (b) 0.7 (c) 0.74 (d) 0.022
  24. 24.6.08 + 8.1 = ? (a) 14.28 (b) 6.89 (c) 14.18 (d) 14.08
  25. 25.4.01 + 4.1 = ? (a) 8.21 (b) 4.42 (c) 8.11 (d) 8.01
  26. 26.What is the value of the digit 3 in 31.572? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  27. 27.Which is the smallest: 0.75, 0.7, 0.083, 0.682? (a) 0.75 (b) 0.7 (c) 0.083 (d) 0.682
  28. 28.8.58 + 1.5 = ? (a) 10.18 (b) 9.98 (c) 8.73 (d) 10.08
  29. 29.What is the value of the digit 7 in 21.587? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  30. 30.What is the value of the digit 6 in 41.286? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  31. 31.6.35 + 5.3 = ? (a) 11.65 (b) 11.55 (c) 6.88 (d) 11.75
  32. 32.8.17 + 1.4 = ? (a) 8.31 (b) 9.47 (c) 9.57 (d) 9.67
  33. 33.What is the value of the digit 9 in 92.187? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  34. 34.Which is the smallest: 0.58, 0.475, 0.5, 0.055? (a) 0.58 (b) 0.475 (c) 0.5 (d) 0.055
  35. 35.4.53 + 7.2 = ? (a) 11.83 (b) 5.25 (c) 11.63 (d) 11.73
  36. 36.Which is the smallest: 0.097, 0.34, 0.3, 0.273? (a) 0.097 (b) 0.34 (c) 0.3 (d) 0.273
  37. 37.What is the value of the digit 3 in 71.483? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  38. 38.9.32 + 2.1 = ? (a) 11.52 (b) 11.32 (c) 11.42 (d) 9.53
  39. 39.8.64 + 8.7 = ? (a) 17.34 (b) 17.24 (c) 9.51 (d) 17.44
  40. 40.What is the value of the digit 5 in 21.458? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005

Answer key

  1. 9.66
  2. 0.008
  3. 10.39
  4. 8
  5. 0.022
  6. 11.51
  7. 0.003
  8. 11.83
  9. 0.52
  10. 14.32
  11. 0.017
  12. 0.019
  13. 0.067
  14. 6.84
  15. 0.69
  16. 7.01
  17. 0.002
  18. 0.71
  19. 7.47
  20. 60
  21. 0.44
  22. 0.055
  23. 0.74
  24. 14.18
  25. 8.11
  26. 30
  27. 0.083
  28. 10.08
  29. 0.007
  30. 0.006
  31. 11.65
  32. 9.57
  33. 90
  34. 0.055
  35. 11.73
  36. 0.097
  37. 0.003
  38. 11.42
  39. 17.34
  40. 0.05

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