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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 977 · 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 26.984? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  2. 2.Which is the greatest: 0.762, 0.89, 0.021, 0.8? (a) 0.762 (b) 0.89 (c) 0.021 (d) 0.8
  3. 3.What is the value of the digit 7 in 25.781? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  4. 4.9.21 + 9.7 = ? (a) 19.01 (b) 10.18 (c) 18.81 (d) 18.91
  5. 5.5.25 + 2.7 = ? (a) 8.05 (b) 7.95 (c) 5.52 (d) 7.85
  6. 6.9.21 + 6.1 = ? (a) 15.21 (b) 15.41 (c) 15.31 (d) 9.82
  7. 7.5.24 + 2.2 = ? (a) 7.54 (b) 7.34 (c) 5.46 (d) 7.44
  8. 8.5.16 + 4.2 = ? (a) 9.46 (b) 9.26 (c) 9.36 (d) 5.58
  9. 9.Which is the greatest: 0.594, 0.63, 0.087, 0.6? (a) 0.594 (b) 0.63 (c) 0.087 (d) 0.6
  10. 10.What is the value of the digit 9 in 79.635? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  11. 11.Which is the smallest: 0.013, 0.2, 0.156, 0.29? (a) 0.013 (b) 0.2 (c) 0.156 (d) 0.29
  12. 12.What is the value of the digit 3 in 39.478? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  13. 13.8.94 + 8.1 = ? (a) 17.14 (b) 17.04 (c) 16.94 (d) 9.75
  14. 14.9.86 + 1.1 = ? (a) 10.86 (b) 9.97 (c) 10.96 (d) 11.06
  15. 15.What is the value of the digit 5 in 58.742? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  16. 16.6.18 + 8.5 = ? (a) 7.03 (b) 14.78 (c) 14.68 (d) 14.58
  17. 17.What is the value of the digit 5 in 35.826? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  18. 18.8.33 + 4.2 = ? (a) 8.75 (b) 12.43 (c) 12.53 (d) 12.63
  19. 19.9.41 + 1.6 = ? (a) 11.01 (b) 9.57 (c) 11.11 (d) 10.91
  20. 20.What is the value of the digit 9 in 29.513? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  21. 21.Which is the greatest: 0.398, 0.45, 0.011, 0.4? (a) 0.398 (b) 0.45 (c) 0.011 (d) 0.4
  22. 22.3.11 + 8.5 = ? (a) 11.61 (b) 3.96 (c) 11.71 (d) 11.51
  23. 23.1.15 + 6.1 = ? (a) 7.35 (b) 7.15 (c) 1.76 (d) 7.25
  24. 24.7.09 + 4.2 = ? (a) 11.39 (b) 11.29 (c) 7.51 (d) 11.19
  25. 25.Which is the greatest: 0.44, 0.311, 0.4, 0.072? (a) 0.44 (b) 0.311 (c) 0.4 (d) 0.072
  26. 26.What is the value of the digit 5 in 35.421? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  27. 27.1.72 + 4.5 = ? (a) 6.32 (b) 6.22 (c) 6.12 (d) 2.17
  28. 28.9.07 + 8.9 = ? (a) 17.87 (b) 9.96 (c) 17.97 (d) 18.07
  29. 29.6.97 + 5.9 = ? (a) 12.87 (b) 12.97 (c) 7.56 (d) 12.77
  30. 30.7.71 + 6.3 = ? (a) 14.11 (b) 14.01 (c) 13.91 (d) 8.34
  31. 31.What is the value of the digit 2 in 25.796? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  32. 32.3.11 + 3.1 = ? (a) 6.11 (b) 6.21 (c) 6.31 (d) 3.42
  33. 33.4.87 + 8.7 = ? (a) 13.67 (b) 13.57 (c) 5.74 (d) 13.47
  34. 34.5.88 + 1.4 = ? (a) 7.38 (b) 7.28 (c) 6.02 (d) 7.18
  35. 35.Which is the greatest: 0.66, 0.587, 0.6, 0.095? (a) 0.66 (b) 0.587 (c) 0.6 (d) 0.095
  36. 36.2.92 + 5.1 = ? (a) 8.12 (b) 3.43 (c) 7.92 (d) 8.02
  37. 37.Which is the smallest: 0.45, 0.393, 0.068, 0.4? (a) 0.45 (b) 0.393 (c) 0.068 (d) 0.4
  38. 38.7.83 + 4.1 = ? (a) 11.83 (b) 8.24 (c) 12.03 (d) 11.93
  39. 39.Which is the greatest: 0.2, 0.29, 0.125, 0.084? (a) 0.2 (b) 0.29 (c) 0.125 (d) 0.084
  40. 40.Which is the smallest: 0.378, 0.42, 0.074, 0.4? (a) 0.378 (b) 0.42 (c) 0.074 (d) 0.4

Answer key

  1. 0.9
  2. 0.89
  3. 0.7
  4. 18.91
  5. 7.95
  6. 15.31
  7. 7.44
  8. 9.36
  9. 0.63
  10. 9
  11. 0.013
  12. 30
  13. 17.04
  14. 10.96
  15. 50
  16. 14.68
  17. 5
  18. 12.53
  19. 11.01
  20. 9
  21. 0.45
  22. 11.61
  23. 7.25
  24. 11.29
  25. 0.44
  26. 5
  27. 6.22
  28. 17.97
  29. 12.87
  30. 14.01
  31. 20
  32. 6.21
  33. 13.57
  34. 7.28
  35. 0.66
  36. 8.02
  37. 0.068
  38. 11.93
  39. 0.29
  40. 0.074

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