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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 823 · 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.Which is the smallest: 0.8, 0.024, 0.757, 0.88? (a) 0.8 (b) 0.024 (c) 0.757 (d) 0.88
  2. 2.8.41 + 2.5 = ? (a) 11.01 (b) 10.91 (c) 10.81 (d) 8.66
  3. 3.4.08 + 7.8 = ? (a) 11.88 (b) 4.86 (c) 11.78 (d) 11.98
  4. 4.7.95 + 7.5 = ? (a) 15.35 (b) 15.45 (c) 8.7 (d) 15.55
  5. 5.1.55 + 3.1 = ? (a) 4.55 (b) 4.65 (c) 1.86 (d) 4.75
  6. 6.Which is the greatest: 0.86, 0.743, 0.078, 0.8? (a) 0.86 (b) 0.743 (c) 0.078 (d) 0.8
  7. 7.5.45 + 1.1 = ? (a) 6.45 (b) 6.65 (c) 6.55 (d) 5.56
  8. 8.What is the value of the digit 9 in 12.469? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  9. 9.Which is the greatest: 0.029, 0.8, 0.84, 0.729? (a) 0.029 (b) 0.8 (c) 0.84 (d) 0.729
  10. 10.Which is the greatest: 0.68, 0.594, 0.6, 0.082? (a) 0.68 (b) 0.594 (c) 0.6 (d) 0.082
  11. 11.1.29 + 4.4 = ? (a) 5.79 (b) 1.73 (c) 5.59 (d) 5.69
  12. 12.Which is the smallest: 0.21, 0.131, 0.061, 0.2? (a) 0.21 (b) 0.131 (c) 0.061 (d) 0.2
  13. 13.What is the value of the digit 1 in 12.485? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  14. 14.What is the value of the digit 5 in 65.814? (a) 50 (b) 0.05 (c) 0.5 (d) 5
  15. 15.2.14 + 4.3 = ? (a) 2.57 (b) 6.54 (c) 6.34 (d) 6.44
  16. 16.What is the value of the digit 9 in 96.238? (a) 9 (b) 90 (c) 0.9 (d) 0.09
  17. 17.8.71 + 3.1 = ? (a) 11.91 (b) 11.81 (c) 9.02 (d) 11.71
  18. 18.Which is the smallest: 0.68, 0.573, 0.6, 0.059? (a) 0.68 (b) 0.573 (c) 0.6 (d) 0.059
  19. 19.What is the value of the digit 3 in 73.652? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  20. 20.7.61 + 4.6 = ? (a) 8.07 (b) 12.31 (c) 12.11 (d) 12.21
  21. 21.9.21 + 7.7 = ? (a) 9.98 (b) 16.81 (c) 17.01 (d) 16.91
  22. 22.3.73 + 5.5 = ? (a) 9.33 (b) 4.28 (c) 9.13 (d) 9.23
  23. 23.What is the value of the digit 3 in 16.853? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  24. 24.Which is the greatest: 0.225, 0.019, 0.3, 0.37? (a) 0.225 (b) 0.019 (c) 0.3 (d) 0.37
  25. 25.Which is the smallest: 0.667, 0.73, 0.7, 0.086? (a) 0.667 (b) 0.73 (c) 0.7 (d) 0.086
  26. 26.3.21 + 6.4 = ? (a) 9.71 (b) 3.85 (c) 9.51 (d) 9.61
  27. 27.5.31 + 7.6 = ? (a) 6.07 (b) 12.91 (c) 13.01 (d) 12.81
  28. 28.Which is the greatest: 0.82, 0.782, 0.8, 0.037? (a) 0.82 (b) 0.782 (c) 0.8 (d) 0.037
  29. 29.What is the value of the digit 7 in 43.871? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  30. 30.5.84 + 9.6 = ? (a) 6.8 (b) 15.54 (c) 15.34 (d) 15.44
  31. 31.Which is the greatest: 0.31, 0.217, 0.051, 0.3? (a) 0.31 (b) 0.217 (c) 0.051 (d) 0.3
  32. 32.What is the value of the digit 5 in 75.821? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  33. 33.What is the value of the digit 3 in 93.256? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  34. 34.9.29 + 1.3 = ? (a) 10.49 (b) 9.42 (c) 10.59 (d) 10.69
  35. 35.Which is the greatest: 0.52, 0.432, 0.076, 0.5? (a) 0.52 (b) 0.432 (c) 0.076 (d) 0.5
  36. 36.Which is the greatest: 0.2, 0.013, 0.29, 0.123? (a) 0.2 (b) 0.013 (c) 0.29 (d) 0.123
  37. 37.Which is the greatest: 0.061, 0.2, 0.26, 0.124? (a) 0.061 (b) 0.2 (c) 0.26 (d) 0.124
  38. 38.Which is the greatest: 0.2, 0.132, 0.24, 0.024? (a) 0.2 (b) 0.132 (c) 0.24 (d) 0.024
  39. 39.1.99 + 4.1 = ? (a) 6.09 (b) 2.4 (c) 6.19 (d) 5.99
  40. 40.3.23 + 4.4 = ? (a) 3.67 (b) 7.63 (c) 7.53 (d) 7.73

Answer key

  1. 0.024
  2. 10.91
  3. 11.88
  4. 15.45
  5. 4.65
  6. 0.86
  7. 6.55
  8. 0.009
  9. 0.84
  10. 0.68
  11. 5.69
  12. 0.061
  13. 10
  14. 5
  15. 6.44
  16. 90
  17. 11.81
  18. 0.059
  19. 3
  20. 12.21
  21. 16.91
  22. 9.23
  23. 0.003
  24. 0.37
  25. 0.086
  26. 9.61
  27. 12.91
  28. 0.82
  29. 0.07
  30. 15.44
  31. 0.31
  32. 5
  33. 3
  34. 10.59
  35. 0.52
  36. 0.29
  37. 0.26
  38. 0.24
  39. 6.09
  40. 7.63

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