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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 330 · 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. 1.6.98 + 5.4 = ? (a) 12.28 (b) 12.38 (c) 12.48 (d) 7.52
  2. 2.Which is the greatest: 0.63, 0.558, 0.6, 0.047? (a) 0.63 (b) 0.558 (c) 0.6 (d) 0.047
  3. 3.Which is the smallest: 0.5, 0.422, 0.51, 0.095? (a) 0.5 (b) 0.422 (c) 0.51 (d) 0.095
  4. 4.8.33 + 2.6 = ? (a) 10.93 (b) 8.59 (c) 10.83 (d) 11.03
  5. 5.What is the value of the digit 9 in 16.984? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  6. 6.3.61 + 7.1 = ? (a) 4.32 (b) 10.81 (c) 10.71 (d) 10.61
  7. 7.1.28 + 3.6 = ? (a) 4.78 (b) 4.98 (c) 1.64 (d) 4.88
  8. 8.2.96 + 6.1 = ? (a) 3.57 (b) 9.16 (c) 8.96 (d) 9.06
  9. 9.Which is the smallest: 0.2, 0.076, 0.188, 0.22? (a) 0.2 (b) 0.076 (c) 0.188 (d) 0.22
  10. 10.2.72 + 5.8 = ? (a) 3.3 (b) 8.62 (c) 8.52 (d) 8.42
  11. 11.What is the value of the digit 6 in 63.197? (a) 0.06 (b) 0.6 (c) 6 (d) 60
  12. 12.2.63 + 4.2 = ? (a) 6.93 (b) 3.05 (c) 6.83 (d) 6.73
  13. 13.Which is the smallest: 0.22, 0.165, 0.033, 0.2? (a) 0.22 (b) 0.165 (c) 0.033 (d) 0.2
  14. 14.What is the value of the digit 5 in 25.617? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  15. 15.What is the value of the digit 9 in 45.793? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  16. 16.6.27 + 9.1 = ? (a) 15.27 (b) 15.37 (c) 7.18 (d) 15.47
  17. 17.Which is the greatest: 0.4, 0.44, 0.389, 0.014? (a) 0.4 (b) 0.44 (c) 0.389 (d) 0.014
  18. 18.What is the value of the digit 2 in 72.138? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  19. 19.1.11 + 4.4 = ? (a) 5.51 (b) 5.61 (c) 1.55 (d) 5.41
  20. 20.What is the value of the digit 1 in 65.421? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  21. 21.Which is the smallest: 0.5, 0.016, 0.427, 0.52? (a) 0.5 (b) 0.016 (c) 0.427 (d) 0.52
  22. 22.9.81 + 5.6 = ? (a) 15.51 (b) 15.31 (c) 10.37 (d) 15.41
  23. 23.3.51 + 7.9 = ? (a) 11.41 (b) 11.31 (c) 11.51 (d) 4.3
  24. 24.What is the value of the digit 1 in 19.735? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  25. 25.8.01 + 3.5 = ? (a) 8.36 (b) 11.61 (c) 11.51 (d) 11.41
  26. 26.What is the value of the digit 1 in 63.281? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  27. 27.What is the value of the digit 6 in 54.926? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  28. 28.1.37 + 4.8 = ? (a) 1.85 (b) 6.27 (c) 6.07 (d) 6.17
  29. 29.What is the value of the digit 7 in 84.176? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  30. 30.8.76 + 3.6 = ? (a) 9.12 (b) 12.36 (c) 12.46 (d) 12.26
  31. 31.Which is the greatest: 0.59, 0.5, 0.069, 0.462? (a) 0.59 (b) 0.5 (c) 0.069 (d) 0.462
  32. 32.Which is the greatest: 0.415, 0.5, 0.091, 0.51? (a) 0.415 (b) 0.5 (c) 0.091 (d) 0.51
  33. 33.Which is the smallest: 0.8, 0.037, 0.782, 0.82? (a) 0.8 (b) 0.037 (c) 0.782 (d) 0.82
  34. 34.3.72 + 1.5 = ? (a) 5.12 (b) 3.87 (c) 5.22 (d) 5.32
  35. 35.Which is the smallest: 0.024, 0.87, 0.724, 0.8? (a) 0.024 (b) 0.87 (c) 0.724 (d) 0.8
  36. 36.Which is the greatest: 0.71, 0.082, 0.626, 0.7? (a) 0.71 (b) 0.082 (c) 0.626 (d) 0.7
  37. 37.3.58 + 5.1 = ? (a) 8.68 (b) 8.58 (c) 8.78 (d) 4.09
  38. 38.3.02 + 7.2 = ? (a) 10.32 (b) 10.12 (c) 10.22 (d) 3.74
  39. 39.2.76 + 2.2 = ? (a) 2.98 (b) 4.96 (c) 5.06 (d) 4.86
  40. 40.What is the value of the digit 1 in 36.129? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001

Answer key

  1. 12.38
  2. 0.63
  3. 0.095
  4. 10.93
  5. 0.9
  6. 10.71
  7. 4.88
  8. 9.06
  9. 0.076
  10. 8.52
  11. 60
  12. 6.83
  13. 0.033
  14. 5
  15. 0.09
  16. 15.37
  17. 0.44
  18. 2
  19. 5.51
  20. 0.001
  21. 0.016
  22. 15.41
  23. 11.41
  24. 10
  25. 11.51
  26. 0.001
  27. 0.006
  28. 6.17
  29. 0.07
  30. 12.36
  31. 0.59
  32. 0.51
  33. 0.037
  34. 5.22
  35. 0.024
  36. 0.71
  37. 8.68
  38. 10.22
  39. 4.96
  40. 0.1

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