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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 292 · 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 3 in 12.435? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  2. 2.5.93 + 6.8 = ? (a) 6.61 (b) 12.83 (c) 12.73 (d) 12.63
  3. 3.6.09 + 6.5 = ? (a) 12.59 (b) 6.74 (c) 12.69 (d) 12.49
  4. 4.9.02 + 5.2 = ? (a) 14.32 (b) 9.54 (c) 14.22 (d) 14.12
  5. 5.What is the value of the digit 4 in 62.489? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  6. 6.9.61 + 9.7 = ? (a) 19.21 (b) 19.41 (c) 10.58 (d) 19.31
  7. 7.1.41 + 8.2 = ? (a) 9.51 (b) 2.23 (c) 9.71 (d) 9.61
  8. 8.8.42 + 3.1 = ? (a) 11.42 (b) 8.73 (c) 11.52 (d) 11.62
  9. 9.4.09 + 3.3 = ? (a) 7.49 (b) 7.39 (c) 4.42 (d) 7.29
  10. 10.9.26 + 1.4 = ? (a) 10.66 (b) 10.56 (c) 9.4 (d) 10.76
  11. 11.Which is the greatest: 0.052, 0.266, 0.34, 0.3? (a) 0.052 (b) 0.266 (c) 0.34 (d) 0.3
  12. 12.What is the value of the digit 2 in 24.863? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  13. 13.Which is the greatest: 0.015, 0.522, 0.61, 0.6? (a) 0.015 (b) 0.522 (c) 0.61 (d) 0.6
  14. 14.4.01 + 5.6 = ? (a) 9.51 (b) 9.71 (c) 4.57 (d) 9.61
  15. 15.Which is the greatest: 0.33, 0.288, 0.3, 0.091? (a) 0.33 (b) 0.288 (c) 0.3 (d) 0.091
  16. 16.Which is the smallest: 0.83, 0.037, 0.799, 0.8? (a) 0.83 (b) 0.037 (c) 0.799 (d) 0.8
  17. 17.8.11 + 8.1 = ? (a) 16.31 (b) 16.11 (c) 16.21 (d) 8.92
  18. 18.Which is the smallest: 0.086, 0.8, 0.82, 0.767? (a) 0.086 (b) 0.8 (c) 0.82 (d) 0.767
  19. 19.6.53 + 5.3 = ? (a) 7.06 (b) 11.93 (c) 11.83 (d) 11.73
  20. 20.2.48 + 7.5 = ? (a) 9.98 (b) 3.23 (c) 10.08 (d) 9.88
  21. 21.3.04 + 1.8 = ? (a) 4.74 (b) 4.84 (c) 3.22 (d) 4.94
  22. 22.What is the value of the digit 9 in 93.174? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  23. 23.What is the value of the digit 2 in 12.943? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  24. 24.7.64 + 4.2 = ? (a) 8.06 (b) 11.84 (c) 11.94 (d) 11.74
  25. 25.What is the value of the digit 6 in 67.918? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  26. 26.Which is the smallest: 0.047, 0.8, 0.757, 0.87? (a) 0.047 (b) 0.8 (c) 0.757 (d) 0.87
  27. 27.9.26 + 2.7 = ? (a) 11.86 (b) 9.53 (c) 11.96 (d) 12.06
  28. 28.What is the value of the digit 2 in 14.725? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  29. 29.What is the value of the digit 4 in 39.645? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  30. 30.4.03 + 4.8 = ? (a) 8.73 (b) 4.51 (c) 8.83 (d) 8.93
  31. 31.Which is the smallest: 0.47, 0.312, 0.4, 0.016? (a) 0.47 (b) 0.312 (c) 0.4 (d) 0.016
  32. 32.3.98 + 7.8 = ? (a) 11.68 (b) 4.76 (c) 11.88 (d) 11.78
  33. 33.Which is the greatest: 0.52, 0.463, 0.092, 0.5? (a) 0.52 (b) 0.463 (c) 0.092 (d) 0.5
  34. 34.8.33 + 1.6 = ? (a) 9.83 (b) 8.49 (c) 10.03 (d) 9.93
  35. 35.1.86 + 1.7 = ? (a) 3.66 (b) 3.46 (c) 3.56 (d) 2.03
  36. 36.8.31 + 1.1 = ? (a) 9.41 (b) 9.51 (c) 9.31 (d) 8.42
  37. 37.2.21 + 8.2 = ? (a) 10.41 (b) 10.31 (c) 3.03 (d) 10.51
  38. 38.8.57 + 8.9 = ? (a) 17.37 (b) 17.47 (c) 9.46 (d) 17.57
  39. 39.What is the value of the digit 2 in 65.492? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  40. 40.What is the value of the digit 8 in 69.845? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8

Answer key

  1. 0.03
  2. 12.73
  3. 12.59
  4. 14.22
  5. 0.4
  6. 19.31
  7. 9.61
  8. 11.52
  9. 7.39
  10. 10.66
  11. 0.34
  12. 20
  13. 0.61
  14. 9.61
  15. 0.33
  16. 0.037
  17. 16.21
  18. 0.086
  19. 11.83
  20. 9.98
  21. 4.84
  22. 90
  23. 2
  24. 11.84
  25. 60
  26. 0.047
  27. 11.96
  28. 0.02
  29. 0.04
  30. 8.83
  31. 0.016
  32. 11.78
  33. 0.52
  34. 9.93
  35. 3.56
  36. 9.41
  37. 10.41
  38. 17.47
  39. 0.002
  40. 0.8

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