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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 775 · 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 greatest: 0.076, 0.3, 0.221, 0.36? (a) 0.076 (b) 0.3 (c) 0.221 (d) 0.36
  2. 2.7.11 + 2.6 = ? (a) 9.61 (b) 9.81 (c) 9.71 (d) 7.37
  3. 3.Which is the greatest: 0.111, 0.2, 0.088, 0.21? (a) 0.111 (b) 0.2 (c) 0.088 (d) 0.21
  4. 4.9.38 + 8.8 = ? (a) 18.18 (b) 18.08 (c) 10.26 (d) 18.28
  5. 5.3.74 + 9.4 = ? (a) 13.24 (b) 4.68 (c) 13.04 (d) 13.14
  6. 6.Which is the greatest: 0.7, 0.75, 0.031, 0.686? (a) 0.7 (b) 0.75 (c) 0.031 (d) 0.686
  7. 7.Which is the greatest: 0.638, 0.029, 0.7, 0.73? (a) 0.638 (b) 0.029 (c) 0.7 (d) 0.73
  8. 8.7.53 + 7.4 = ? (a) 14.93 (b) 14.83 (c) 15.03 (d) 8.27
  9. 9.Which is the smallest: 0.181, 0.2, 0.098, 0.23? (a) 0.181 (b) 0.2 (c) 0.098 (d) 0.23
  10. 10.What is the value of the digit 6 in 79.623? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  11. 11.3.47 + 8.1 = ? (a) 11.47 (b) 11.67 (c) 4.28 (d) 11.57
  12. 12.6.91 + 9.5 = ? (a) 16.51 (b) 16.41 (c) 7.86 (d) 16.31
  13. 13.Which is the greatest: 0.59, 0.5, 0.414, 0.083? (a) 0.59 (b) 0.5 (c) 0.414 (d) 0.083
  14. 14.8.68 + 9.9 = ? (a) 18.48 (b) 18.68 (c) 9.67 (d) 18.58
  15. 15.Which is the smallest: 0.5, 0.432, 0.088, 0.58? (a) 0.5 (b) 0.432 (c) 0.088 (d) 0.58
  16. 16.Which is the greatest: 0.2, 0.21, 0.056, 0.159? (a) 0.2 (b) 0.21 (c) 0.056 (d) 0.159
  17. 17.What is the value of the digit 7 in 54.972? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  18. 18.What is the value of the digit 6 in 84.765? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  19. 19.6.63 + 1.5 = ? (a) 8.13 (b) 8.03 (c) 8.23 (d) 6.78
  20. 20.3.58 + 1.1 = ? (a) 4.68 (b) 3.69 (c) 4.58 (d) 4.78
  21. 21.6.59 + 5.1 = ? (a) 7.1 (b) 11.69 (c) 11.79 (d) 11.59
  22. 22.Which is the smallest: 0.6, 0.64, 0.525, 0.037? (a) 0.6 (b) 0.64 (c) 0.525 (d) 0.037
  23. 23.3.97 + 4.3 = ? (a) 4.4 (b) 8.17 (c) 8.37 (d) 8.27
  24. 24.What is the value of the digit 9 in 64.239? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  25. 25.5.91 + 1.3 = ? (a) 7.31 (b) 7.21 (c) 6.04 (d) 7.11
  26. 26.3.51 + 1.9 = ? (a) 5.31 (b) 5.51 (c) 3.7 (d) 5.41
  27. 27.Which is the smallest: 0.88, 0.089, 0.739, 0.8? (a) 0.88 (b) 0.089 (c) 0.739 (d) 0.8
  28. 28.What is the value of the digit 4 in 82.634? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  29. 29.Which is the greatest: 0.2, 0.123, 0.24, 0.034? (a) 0.2 (b) 0.123 (c) 0.24 (d) 0.034
  30. 30.6.06 + 7.5 = ? (a) 13.46 (b) 13.66 (c) 6.81 (d) 13.56
  31. 31.Which is the greatest: 0.7, 0.648, 0.026, 0.73? (a) 0.7 (b) 0.648 (c) 0.026 (d) 0.73
  32. 32.Which is the smallest: 0.2, 0.188, 0.26, 0.047? (a) 0.2 (b) 0.188 (c) 0.26 (d) 0.047
  33. 33.Which is the greatest: 0.6, 0.567, 0.067, 0.66? (a) 0.6 (b) 0.567 (c) 0.067 (d) 0.66
  34. 34.2.38 + 5.2 = ? (a) 7.58 (b) 7.68 (c) 2.9 (d) 7.48
  35. 35.What is the value of the digit 1 in 13.695? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  36. 36.8.75 + 7.3 = ? (a) 9.48 (b) 15.95 (c) 16.05 (d) 16.15
  37. 37.Which is the greatest: 0.148, 0.056, 0.2, 0.27? (a) 0.148 (b) 0.056 (c) 0.2 (d) 0.27
  38. 38.4.87 + 1.7 = ? (a) 6.47 (b) 6.67 (c) 5.04 (d) 6.57
  39. 39.5.65 + 5.6 = ? (a) 6.21 (b) 11.35 (c) 11.25 (d) 11.15
  40. 40.1.25 + 2.3 = ? (a) 3.45 (b) 1.48 (c) 3.65 (d) 3.55

Answer key

  1. 0.36
  2. 9.71
  3. 0.21
  4. 18.18
  5. 13.14
  6. 0.75
  7. 0.73
  8. 14.93
  9. 0.098
  10. 0.6
  11. 11.57
  12. 16.41
  13. 0.59
  14. 18.58
  15. 0.088
  16. 0.21
  17. 0.07
  18. 0.06
  19. 8.13
  20. 4.68
  21. 11.69
  22. 0.037
  23. 8.27
  24. 0.009
  25. 7.21
  26. 5.41
  27. 0.089
  28. 0.004
  29. 0.24
  30. 13.56
  31. 0.73
  32. 0.047
  33. 0.66
  34. 7.58
  35. 10
  36. 16.05
  37. 0.27
  38. 6.57
  39. 11.25
  40. 3.55

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