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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 352 · 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. 1.3.63 + 1.6 = ? (a) 5.13 (b) 5.23 (c) 5.33 (d) 3.79
  2. 2.6.59 + 9.6 = ? (a) 7.55 (b) 16.09 (c) 16.19 (d) 16.29
  3. 3.1.07 + 2.6 = ? (a) 3.67 (b) 1.33 (c) 3.57 (d) 3.77
  4. 4.Which is the greatest: 0.555, 0.095, 0.6, 0.61? (a) 0.555 (b) 0.095 (c) 0.6 (d) 0.61
  5. 5.Which is the smallest: 0.2, 0.196, 0.28, 0.098? (a) 0.2 (b) 0.196 (c) 0.28 (d) 0.098
  6. 6.What is the value of the digit 5 in 37.485? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  7. 7.Which is the greatest: 0.015, 0.75, 0.646, 0.7? (a) 0.015 (b) 0.75 (c) 0.646 (d) 0.7
  8. 8.Which is the smallest: 0.33, 0.292, 0.056, 0.3? (a) 0.33 (b) 0.292 (c) 0.056 (d) 0.3
  9. 9.Which is the smallest: 0.292, 0.36, 0.3, 0.099? (a) 0.292 (b) 0.36 (c) 0.3 (d) 0.099
  10. 10.Which is the smallest: 0.038, 0.4, 0.42, 0.343? (a) 0.038 (b) 0.4 (c) 0.42 (d) 0.343
  11. 11.Which is the greatest: 0.5, 0.045, 0.56, 0.421? (a) 0.5 (b) 0.045 (c) 0.56 (d) 0.421
  12. 12.What is the value of the digit 2 in 67.829? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  13. 13.2.34 + 9.7 = ? (a) 11.94 (b) 3.31 (c) 12.04 (d) 12.14
  14. 14.Which is the greatest: 0.82, 0.735, 0.083, 0.8? (a) 0.82 (b) 0.735 (c) 0.083 (d) 0.8
  15. 15.What is the value of the digit 1 in 61.598? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  16. 16.Which is the smallest: 0.55, 0.434, 0.036, 0.5? (a) 0.55 (b) 0.434 (c) 0.036 (d) 0.5
  17. 17.4.71 + 2.6 = ? (a) 4.97 (b) 7.21 (c) 7.41 (d) 7.31
  18. 18.What is the value of the digit 2 in 26.193? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  19. 19.Which is the smallest: 0.68, 0.6, 0.034, 0.551? (a) 0.68 (b) 0.6 (c) 0.034 (d) 0.551
  20. 20.5.65 + 3.1 = ? (a) 8.75 (b) 8.85 (c) 8.65 (d) 5.96
  21. 21.Which is the smallest: 0.771, 0.89, 0.061, 0.8? (a) 0.771 (b) 0.89 (c) 0.061 (d) 0.8
  22. 22.Which is the smallest: 0.063, 0.127, 0.23, 0.2? (a) 0.063 (b) 0.127 (c) 0.23 (d) 0.2
  23. 23.Which is the smallest: 0.051, 0.6, 0.65, 0.593? (a) 0.051 (b) 0.6 (c) 0.65 (d) 0.593
  24. 24.8.02 + 8.3 = ? (a) 8.85 (b) 16.22 (c) 16.42 (d) 16.32
  25. 25.What is the value of the digit 2 in 26.395? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  26. 26.What is the value of the digit 5 in 18.956? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  27. 27.2.73 + 2.5 = ? (a) 5.13 (b) 5.23 (c) 5.33 (d) 2.98
  28. 28.3.19 + 7.7 = ? (a) 3.96 (b) 10.79 (c) 10.99 (d) 10.89
  29. 29.8.36 + 9.4 = ? (a) 17.86 (b) 17.66 (c) 17.76 (d) 9.3
  30. 30.Which is the greatest: 0.492, 0.016, 0.5, 0.58? (a) 0.492 (b) 0.016 (c) 0.5 (d) 0.58
  31. 31.Which is the smallest: 0.012, 0.551, 0.64, 0.6? (a) 0.012 (b) 0.551 (c) 0.64 (d) 0.6
  32. 32.3.32 + 9.2 = ? (a) 12.62 (b) 4.24 (c) 12.42 (d) 12.52
  33. 33.What is the value of the digit 2 in 68.723? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  34. 34.Which is the greatest: 0.56, 0.028, 0.424, 0.5? (a) 0.56 (b) 0.028 (c) 0.424 (d) 0.5
  35. 35.Which is the smallest: 0.6, 0.584, 0.021, 0.61? (a) 0.6 (b) 0.584 (c) 0.021 (d) 0.61
  36. 36.Which is the greatest: 0.092, 0.483, 0.5, 0.53? (a) 0.092 (b) 0.483 (c) 0.5 (d) 0.53
  37. 37.What is the value of the digit 2 in 65.273? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  38. 38.What is the value of the digit 4 in 47.189? (a) 40 (b) 0.04 (c) 4 (d) 0.4
  39. 39.What is the value of the digit 1 in 17.543? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  40. 40.Which is the smallest: 0.458, 0.5, 0.093, 0.52? (a) 0.458 (b) 0.5 (c) 0.093 (d) 0.52

Answer key

  1. 5.23
  2. 16.19
  3. 3.67
  4. 0.61
  5. 0.098
  6. 0.005
  7. 0.75
  8. 0.056
  9. 0.099
  10. 0.038
  11. 0.56
  12. 0.02
  13. 12.04
  14. 0.82
  15. 1
  16. 0.036
  17. 7.31
  18. 20
  19. 0.034
  20. 8.75
  21. 0.061
  22. 0.063
  23. 0.051
  24. 16.32
  25. 20
  26. 0.05
  27. 5.23
  28. 10.89
  29. 17.76
  30. 0.58
  31. 0.012
  32. 12.52
  33. 0.02
  34. 0.56
  35. 0.021
  36. 0.53
  37. 0.2
  38. 40
  39. 10
  40. 0.093

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