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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 160 · 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 5 in 12.345? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  2. 2.Which is the smallest: 0.8, 0.756, 0.87, 0.036? (a) 0.8 (b) 0.756 (c) 0.87 (d) 0.036
  3. 3.Which is the greatest: 0.024, 0.149, 0.21, 0.2? (a) 0.024 (b) 0.149 (c) 0.21 (d) 0.2
  4. 4.5.45 + 2.9 = ? (a) 5.74 (b) 8.25 (c) 8.45 (d) 8.35
  5. 5.Which is the smallest: 0.398, 0.4, 0.022, 0.44? (a) 0.398 (b) 0.4 (c) 0.022 (d) 0.44
  6. 6.8.09 + 7.5 = ? (a) 15.49 (b) 8.84 (c) 15.69 (d) 15.59
  7. 7.Which is the smallest: 0.548, 0.012, 0.6, 0.62? (a) 0.548 (b) 0.012 (c) 0.6 (d) 0.62
  8. 8.7.41 + 9.1 = ? (a) 16.61 (b) 16.51 (c) 8.32 (d) 16.41
  9. 9.Which is the greatest: 0.344, 0.4, 0.49, 0.044? (a) 0.344 (b) 0.4 (c) 0.49 (d) 0.044
  10. 10.What is the value of the digit 4 in 36.148? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  11. 11.4.75 + 2.1 = ? (a) 6.95 (b) 6.85 (c) 6.75 (d) 4.96
  12. 12.Which is the greatest: 0.137, 0.29, 0.039, 0.2? (a) 0.137 (b) 0.29 (c) 0.039 (d) 0.2
  13. 13.What is the value of the digit 8 in 81.326? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  14. 14.Which is the greatest: 0.068, 0.3, 0.32, 0.225? (a) 0.068 (b) 0.3 (c) 0.32 (d) 0.225
  15. 15.6.65 + 3.4 = ? (a) 10.15 (b) 10.05 (c) 9.95 (d) 6.99
  16. 16.9.31 + 1.9 = ? (a) 9.5 (b) 11.21 (c) 11.11 (d) 11.31
  17. 17.1.83 + 6.8 = ? (a) 8.53 (b) 2.51 (c) 8.63 (d) 8.73
  18. 18.What is the value of the digit 8 in 82.391? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  19. 19.Which is the smallest: 0.57, 0.063, 0.5, 0.415? (a) 0.57 (b) 0.063 (c) 0.5 (d) 0.415
  20. 20.Which is the greatest: 0.2, 0.135, 0.23, 0.075? (a) 0.2 (b) 0.135 (c) 0.23 (d) 0.075
  21. 21.Which is the greatest: 0.52, 0.437, 0.5, 0.098? (a) 0.52 (b) 0.437 (c) 0.5 (d) 0.098
  22. 22.What is the value of the digit 9 in 89.713? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  23. 23.Which is the greatest: 0.2, 0.015, 0.188, 0.22? (a) 0.2 (b) 0.015 (c) 0.188 (d) 0.22
  24. 24.9.63 + 6.6 = ? (a) 16.33 (b) 16.23 (c) 10.29 (d) 16.13
  25. 25.Which is the greatest: 0.056, 0.48, 0.369, 0.4? (a) 0.056 (b) 0.48 (c) 0.369 (d) 0.4
  26. 26.What is the value of the digit 4 in 43.172? (a) 4 (b) 0.04 (c) 0.4 (d) 40
  27. 27.Which is the greatest: 0.029, 0.78, 0.7, 0.692? (a) 0.029 (b) 0.78 (c) 0.7 (d) 0.692
  28. 28.Which is the greatest: 0.6, 0.524, 0.046, 0.61? (a) 0.6 (b) 0.524 (c) 0.046 (d) 0.61
  29. 29.What is the value of the digit 4 in 53.246? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  30. 30.2.68 + 7.2 = ? (a) 9.98 (b) 9.88 (c) 9.78 (d) 3.4
  31. 31.Which is the smallest: 0.22, 0.058, 0.2, 0.146? (a) 0.22 (b) 0.058 (c) 0.2 (d) 0.146
  32. 32.What is the value of the digit 1 in 15.628? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  33. 33.3.51 + 3.4 = ? (a) 6.91 (b) 3.85 (c) 6.81 (d) 7.01
  34. 34.4.14 + 7.6 = ? (a) 11.74 (b) 4.9 (c) 11.64 (d) 11.84
  35. 35.Which is the greatest: 0.27, 0.083, 0.116, 0.2? (a) 0.27 (b) 0.083 (c) 0.116 (d) 0.2
  36. 36.3.71 + 6.1 = ? (a) 9.71 (b) 4.32 (c) 9.81 (d) 9.91
  37. 37.What is the value of the digit 5 in 31.574? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  38. 38.1.11 + 2.8 = ? (a) 3.81 (b) 4.01 (c) 3.91 (d) 1.39
  39. 39.Which is the smallest: 0.4, 0.318, 0.45, 0.063? (a) 0.4 (b) 0.318 (c) 0.45 (d) 0.063
  40. 40.Which is the greatest: 0.631, 0.74, 0.053, 0.7? (a) 0.631 (b) 0.74 (c) 0.053 (d) 0.7

Answer key

  1. 0.005
  2. 0.036
  3. 0.21
  4. 8.35
  5. 0.022
  6. 15.59
  7. 0.012
  8. 16.51
  9. 0.49
  10. 0.04
  11. 6.85
  12. 0.29
  13. 80
  14. 0.32
  15. 10.05
  16. 11.21
  17. 8.63
  18. 80
  19. 0.063
  20. 0.23
  21. 0.52
  22. 9
  23. 0.22
  24. 16.23
  25. 0.48
  26. 40
  27. 0.78
  28. 0.61
  29. 0.04
  30. 9.88
  31. 0.058
  32. 10
  33. 6.91
  34. 11.74
  35. 0.27
  36. 9.81
  37. 0.5
  38. 3.91
  39. 0.063
  40. 0.74

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