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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 233 · 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. 1.2.28 + 8.8 = ? (a) 11.08 (b) 11.18 (c) 3.16 (d) 10.98
  2. 2.7.15 + 7.4 = ? (a) 14.65 (b) 7.89 (c) 14.55 (d) 14.45
  3. 3.What is the value of the digit 9 in 62.859? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  4. 4.3.89 + 8.1 = ? (a) 11.89 (b) 4.7 (c) 12.09 (d) 11.99
  5. 5.Which is the greatest: 0.5, 0.095, 0.437, 0.51? (a) 0.5 (b) 0.095 (c) 0.437 (d) 0.51
  6. 6.2.58 + 9.1 = ? (a) 11.68 (b) 11.78 (c) 3.49 (d) 11.58
  7. 7.8.87 + 2.4 = ? (a) 11.37 (b) 11.27 (c) 9.11 (d) 11.17
  8. 8.Which is the greatest: 0.147, 0.28, 0.053, 0.2? (a) 0.147 (b) 0.28 (c) 0.053 (d) 0.2
  9. 9.8.59 + 4.7 = ? (a) 13.29 (b) 13.39 (c) 13.19 (d) 9.06
  10. 10.3.32 + 9.5 = ? (a) 12.72 (b) 12.92 (c) 12.82 (d) 4.27
  11. 11.Which is the smallest: 0.75, 0.7, 0.095, 0.654? (a) 0.75 (b) 0.7 (c) 0.095 (d) 0.654
  12. 12.4.47 + 4.6 = ? (a) 4.93 (b) 9.07 (c) 8.97 (d) 9.17
  13. 13.What is the value of the digit 8 in 16.382? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  14. 14.Which is the greatest: 0.089, 0.36, 0.259, 0.3? (a) 0.089 (b) 0.36 (c) 0.259 (d) 0.3
  15. 15.What is the value of the digit 5 in 58.792? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  16. 16.5.44 + 9.4 = ? (a) 6.38 (b) 14.94 (c) 14.84 (d) 14.74
  17. 17.Which is the smallest: 0.685, 0.78, 0.016, 0.7? (a) 0.685 (b) 0.78 (c) 0.016 (d) 0.7
  18. 18.Which is the greatest: 0.4, 0.48, 0.082, 0.381? (a) 0.4 (b) 0.48 (c) 0.082 (d) 0.381
  19. 19.4.66 + 3.4 = ? (a) 5 (b) 7.96 (c) 8.16 (d) 8.06
  20. 20.What is the value of the digit 8 in 85.967? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  21. 21.5.05 + 6.7 = ? (a) 11.75 (b) 11.85 (c) 5.72 (d) 11.65
  22. 22.Which is the smallest: 0.041, 0.61, 0.596, 0.6? (a) 0.041 (b) 0.61 (c) 0.596 (d) 0.6
  23. 23.What is the value of the digit 9 in 62.954? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  24. 24.7.31 + 2.1 = ? (a) 9.31 (b) 9.51 (c) 9.41 (d) 7.52
  25. 25.Which is the smallest: 0.4, 0.094, 0.313, 0.48? (a) 0.4 (b) 0.094 (c) 0.313 (d) 0.48
  26. 26.What is the value of the digit 1 in 93.816? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  27. 27.What is the value of the digit 7 in 63.784? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  28. 28.1.43 + 8.9 = ? (a) 10.23 (b) 10.43 (c) 10.33 (d) 2.32
  29. 29.5.32 + 1.9 = ? (a) 5.51 (b) 7.22 (c) 7.32 (d) 7.12
  30. 30.3.43 + 7.1 = ? (a) 10.63 (b) 10.43 (c) 4.14 (d) 10.53
  31. 31.What is the value of the digit 1 in 25.173? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  32. 32.Which is the greatest: 0.7, 0.73, 0.019, 0.632? (a) 0.7 (b) 0.73 (c) 0.019 (d) 0.632
  33. 33.Which is the greatest: 0.043, 0.7, 0.694, 0.73? (a) 0.043 (b) 0.7 (c) 0.694 (d) 0.73
  34. 34.Which is the greatest: 0.61, 0.522, 0.079, 0.6? (a) 0.61 (b) 0.522 (c) 0.079 (d) 0.6
  35. 35.5.21 + 7.7 = ? (a) 5.98 (b) 12.81 (c) 12.91 (d) 13.01
  36. 36.4.26 + 3.3 = ? (a) 7.46 (b) 7.66 (c) 4.59 (d) 7.56
  37. 37.What is the value of the digit 2 in 89.237? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  38. 38.Which is the greatest: 0.71, 0.7, 0.026, 0.623? (a) 0.71 (b) 0.7 (c) 0.026 (d) 0.623
  39. 39.Which is the greatest: 0.23, 0.113, 0.018, 0.2? (a) 0.23 (b) 0.113 (c) 0.018 (d) 0.2
  40. 40.5.13 + 3.1 = ? (a) 8.13 (b) 5.44 (c) 8.33 (d) 8.23

Answer key

  1. 11.08
  2. 14.55
  3. 0.009
  4. 11.99
  5. 0.51
  6. 11.68
  7. 11.27
  8. 0.28
  9. 13.29
  10. 12.82
  11. 0.095
  12. 9.07
  13. 0.08
  14. 0.36
  15. 50
  16. 14.84
  17. 0.016
  18. 0.48
  19. 8.06
  20. 80
  21. 11.75
  22. 0.041
  23. 0.9
  24. 9.41
  25. 0.094
  26. 0.01
  27. 0.7
  28. 10.33
  29. 7.22
  30. 10.53
  31. 0.1
  32. 0.73
  33. 0.73
  34. 0.61
  35. 12.91
  36. 7.56
  37. 0.2
  38. 0.71
  39. 0.23
  40. 8.23

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