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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 999 · 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 9 in 71.829? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  2. 2.9.06 + 6.4 = ? (a) 15.36 (b) 15.46 (c) 9.7 (d) 15.56
  3. 3.9.73 + 8.5 = ? (a) 18.33 (b) 10.58 (c) 18.13 (d) 18.23
  4. 4.What is the value of the digit 6 in 67.142? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  5. 5.Which is the smallest: 0.187, 0.2, 0.039, 0.21? (a) 0.187 (b) 0.2 (c) 0.039 (d) 0.21
  6. 6.2.41 + 2.5 = ? (a) 5.01 (b) 4.81 (c) 4.91 (d) 2.66
  7. 7.Which is the smallest: 0.332, 0.43, 0.4, 0.085? (a) 0.332 (b) 0.43 (c) 0.4 (d) 0.085
  8. 8.What is the value of the digit 8 in 81.957? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  9. 9.Which is the greatest: 0.548, 0.69, 0.015, 0.6? (a) 0.548 (b) 0.69 (c) 0.015 (d) 0.6
  10. 10.What is the value of the digit 5 in 31.524? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  11. 11.Which is the greatest: 0.051, 0.72, 0.673, 0.7? (a) 0.051 (b) 0.72 (c) 0.673 (d) 0.7
  12. 12.8.93 + 3.2 = ? (a) 12.13 (b) 9.25 (c) 12.03 (d) 12.23
  13. 13.5.08 + 4.6 = ? (a) 9.68 (b) 9.58 (c) 9.78 (d) 5.54
  14. 14.7.21 + 9.7 = ? (a) 8.18 (b) 17.01 (c) 16.91 (d) 16.81
  15. 15.Which is the smallest: 0.396, 0.072, 0.4, 0.42? (a) 0.396 (b) 0.072 (c) 0.4 (d) 0.42
  16. 16.3.11 + 9.8 = ? (a) 12.81 (b) 13.01 (c) 12.91 (d) 4.09
  17. 17.9.88 + 7.6 = ? (a) 17.58 (b) 17.48 (c) 17.38 (d) 10.64
  18. 18.5.48 + 8.7 = ? (a) 14.18 (b) 6.35 (c) 14.08 (d) 14.28
  19. 19.2.17 + 4.4 = ? (a) 6.67 (b) 2.61 (c) 6.47 (d) 6.57
  20. 20.What is the value of the digit 8 in 65.843? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  21. 21.1.97 + 8.1 = ? (a) 9.97 (b) 10.07 (c) 10.17 (d) 2.78
  22. 22.What is the value of the digit 4 in 94.862? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  23. 23.Which is the greatest: 0.031, 0.122, 0.2, 0.21? (a) 0.031 (b) 0.122 (c) 0.2 (d) 0.21
  24. 24.What is the value of the digit 4 in 59.427? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  25. 25.1.25 + 3.1 = ? (a) 1.56 (b) 4.35 (c) 4.25 (d) 4.45
  26. 26.What is the value of the digit 1 in 15.289? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  27. 27.What is the value of the digit 3 in 18.263? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  28. 28.Which is the greatest: 0.3, 0.34, 0.022, 0.243? (a) 0.3 (b) 0.34 (c) 0.022 (d) 0.243
  29. 29.4.38 + 4.1 = ? (a) 4.79 (b) 8.38 (c) 8.48 (d) 8.58
  30. 30.Which is the smallest: 0.028, 0.794, 0.8, 0.84? (a) 0.028 (b) 0.794 (c) 0.8 (d) 0.84
  31. 31.2.27 + 1.6 = ? (a) 2.43 (b) 3.77 (c) 3.97 (d) 3.87
  32. 32.Which is the smallest: 0.33, 0.224, 0.038, 0.3? (a) 0.33 (b) 0.224 (c) 0.038 (d) 0.3
  33. 33.Which is the greatest: 0.051, 0.81, 0.758, 0.8? (a) 0.051 (b) 0.81 (c) 0.758 (d) 0.8
  34. 34.6.61 + 5.5 = ? (a) 12.11 (b) 12.21 (c) 12.01 (d) 7.16
  35. 35.What is the value of the digit 4 in 94.658? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  36. 36.What is the value of the digit 8 in 68.945? (a) 0.8 (b) 80 (c) 0.08 (d) 8
  37. 37.What is the value of the digit 2 in 16.238? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  38. 38.Which is the greatest: 0.022, 0.8, 0.727, 0.86? (a) 0.022 (b) 0.8 (c) 0.727 (d) 0.86
  39. 39.Which is the greatest: 0.075, 0.369, 0.4, 0.47? (a) 0.075 (b) 0.369 (c) 0.4 (d) 0.47
  40. 40.2.53 + 1.9 = ? (a) 4.53 (b) 4.33 (c) 2.72 (d) 4.43

Answer key

  1. 0.009
  2. 15.46
  3. 18.23
  4. 60
  5. 0.039
  6. 4.91
  7. 0.085
  8. 80
  9. 0.69
  10. 0.5
  11. 0.72
  12. 12.13
  13. 9.68
  14. 16.91
  15. 0.072
  16. 12.91
  17. 17.48
  18. 14.18
  19. 6.57
  20. 0.8
  21. 10.07
  22. 4
  23. 0.21
  24. 0.4
  25. 4.35
  26. 10
  27. 0.003
  28. 0.34
  29. 8.48
  30. 0.028
  31. 3.87
  32. 0.038
  33. 0.81
  34. 12.11
  35. 4
  36. 8
  37. 0.2
  38. 0.86
  39. 0.47
  40. 4.43

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