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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 335 · 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. 1.2.65 + 8.2 = ? (a) 3.47 (b) 10.75 (c) 10.85 (d) 10.95
  2. 2.4.38 + 5.3 = ? (a) 9.58 (b) 9.78 (c) 9.68 (d) 4.91
  3. 3.Which is the smallest: 0.612, 0.061, 0.7, 0.72? (a) 0.612 (b) 0.061 (c) 0.7 (d) 0.72
  4. 4.2.53 + 8.8 = ? (a) 11.33 (b) 3.41 (c) 11.43 (d) 11.23
  5. 5.7.53 + 9.4 = ? (a) 16.93 (b) 17.03 (c) 16.83 (d) 8.47
  6. 6.Which is the greatest: 0.54, 0.414, 0.5, 0.032? (a) 0.54 (b) 0.414 (c) 0.5 (d) 0.032
  7. 7.What is the value of the digit 6 in 53.126? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  8. 8.Which is the smallest: 0.782, 0.8, 0.024, 0.88? (a) 0.782 (b) 0.8 (c) 0.024 (d) 0.88
  9. 9.What is the value of the digit 6 in 71.639? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  10. 10.9.12 + 3.2 = ? (a) 9.44 (b) 12.42 (c) 12.22 (d) 12.32
  11. 11.Which is the greatest: 0.082, 0.4, 0.44, 0.338? (a) 0.082 (b) 0.4 (c) 0.44 (d) 0.338
  12. 12.What is the value of the digit 2 in 47.123? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  13. 13.9.48 + 9.5 = ? (a) 10.43 (b) 19.08 (c) 18.98 (d) 18.88
  14. 14.Which is the smallest: 0.194, 0.057, 0.28, 0.2? (a) 0.194 (b) 0.057 (c) 0.28 (d) 0.2
  15. 15.3.36 + 7.2 = ? (a) 10.66 (b) 4.08 (c) 10.46 (d) 10.56
  16. 16.What is the value of the digit 9 in 68.594? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  17. 17.1.67 + 5.3 = ? (a) 2.2 (b) 6.87 (c) 6.97 (d) 7.07
  18. 18.Which is the smallest: 0.032, 0.241, 0.3, 0.34? (a) 0.032 (b) 0.241 (c) 0.3 (d) 0.34
  19. 19.What is the value of the digit 1 in 91.478? (a) 0.01 (b) 1 (c) 10 (d) 0.1
  20. 20.Which is the smallest: 0.73, 0.067, 0.626, 0.7? (a) 0.73 (b) 0.067 (c) 0.626 (d) 0.7
  21. 21.1.94 + 3.5 = ? (a) 2.29 (b) 5.54 (c) 5.44 (d) 5.34
  22. 22.9.52 + 2.9 = ? (a) 12.32 (b) 12.52 (c) 9.81 (d) 12.42
  23. 23.7.12 + 4.1 = ? (a) 11.22 (b) 11.12 (c) 11.32 (d) 7.53
  24. 24.Which is the greatest: 0.82, 0.084, 0.726, 0.8? (a) 0.82 (b) 0.084 (c) 0.726 (d) 0.8
  25. 25.2.28 + 2.4 = ? (a) 4.58 (b) 2.52 (c) 4.68 (d) 4.78
  26. 26.4.25 + 9.5 = ? (a) 13.65 (b) 13.75 (c) 13.85 (d) 5.2
  27. 27.Which is the greatest: 0.4, 0.055, 0.313, 0.41? (a) 0.4 (b) 0.055 (c) 0.313 (d) 0.41
  28. 28.What is the value of the digit 6 in 61.428? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  29. 29.What is the value of the digit 2 in 29.168? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  30. 30.What is the value of the digit 5 in 53.786? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  31. 31.What is the value of the digit 1 in 13.426? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  32. 32.6.42 + 8.4 = ? (a) 14.82 (b) 14.72 (c) 14.92 (d) 7.26
  33. 33.2.74 + 3.3 = ? (a) 6.14 (b) 3.07 (c) 5.94 (d) 6.04
  34. 34.Which is the smallest: 0.461, 0.51, 0.5, 0.083? (a) 0.461 (b) 0.51 (c) 0.5 (d) 0.083
  35. 35.What is the value of the digit 7 in 16.378? (a) 0.07 (b) 0.007 (c) 0.7 (d) 7
  36. 36.5.04 + 9.6 = ? (a) 14.54 (b) 14.74 (c) 6 (d) 14.64
  37. 37.Which is the greatest: 0.75, 0.665, 0.029, 0.7? (a) 0.75 (b) 0.665 (c) 0.029 (d) 0.7
  38. 38.What is the value of the digit 1 in 85.712? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  39. 39.Which is the smallest: 0.649, 0.76, 0.056, 0.7? (a) 0.649 (b) 0.76 (c) 0.056 (d) 0.7
  40. 40.What is the value of the digit 9 in 17.596? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09

Answer key

  1. 10.85
  2. 9.68
  3. 0.061
  4. 11.33
  5. 16.93
  6. 0.54
  7. 0.006
  8. 0.024
  9. 0.6
  10. 12.32
  11. 0.44
  12. 0.02
  13. 18.98
  14. 0.057
  15. 10.56
  16. 0.09
  17. 6.97
  18. 0.032
  19. 1
  20. 0.067
  21. 5.44
  22. 12.42
  23. 11.22
  24. 0.82
  25. 4.68
  26. 13.75
  27. 0.41
  28. 60
  29. 20
  30. 50
  31. 10
  32. 14.82
  33. 6.04
  34. 0.083
  35. 0.07
  36. 14.64
  37. 0.75
  38. 0.01
  39. 0.056
  40. 0.09

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