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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 885 · 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. 1.3.21 + 9.1 = ? (a) 12.41 (b) 4.12 (c) 12.21 (d) 12.31
  2. 2.What is the value of the digit 8 in 83.925? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  3. 3.What is the value of the digit 2 in 31.428? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  4. 4.What is the value of the digit 5 in 54.216? (a) 0.05 (b) 5 (c) 0.5 (d) 50
  5. 5.Which is the greatest: 0.768, 0.092, 0.8, 0.83? (a) 0.768 (b) 0.092 (c) 0.8 (d) 0.83
  6. 6.Which is the greatest: 0.066, 0.5, 0.55, 0.419? (a) 0.066 (b) 0.5 (c) 0.55 (d) 0.419
  7. 7.8.64 + 2.9 = ? (a) 11.44 (b) 8.93 (c) 11.64 (d) 11.54
  8. 8.5.64 + 7.5 = ? (a) 13.14 (b) 13.04 (c) 13.24 (d) 6.39
  9. 9.4.07 + 2.8 = ? (a) 6.77 (b) 6.87 (c) 6.97 (d) 4.35
  10. 10.What is the value of the digit 2 in 76.392? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  11. 11.7.62 + 8.6 = ? (a) 16.22 (b) 16.32 (c) 16.12 (d) 8.48
  12. 12.1.17 + 8.1 = ? (a) 9.27 (b) 9.37 (c) 9.17 (d) 1.98
  13. 13.What is the value of the digit 5 in 84.536? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  14. 14.3.79 + 4.8 = ? (a) 8.49 (b) 8.59 (c) 4.27 (d) 8.69
  15. 15.Which is the greatest: 0.068, 0.188, 0.2, 0.21? (a) 0.068 (b) 0.188 (c) 0.2 (d) 0.21
  16. 16.Which is the smallest: 0.52, 0.5, 0.059, 0.456? (a) 0.52 (b) 0.5 (c) 0.059 (d) 0.456
  17. 17.What is the value of the digit 2 in 28.947? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  18. 18.7.31 + 2.8 = ? (a) 10.11 (b) 10.01 (c) 7.59 (d) 10.21
  19. 19.6.41 + 2.1 = ? (a) 8.51 (b) 8.61 (c) 6.62 (d) 8.41
  20. 20.Which is the smallest: 0.094, 0.8, 0.722, 0.85? (a) 0.094 (b) 0.8 (c) 0.722 (d) 0.85
  21. 21.3.41 + 2.6 = ? (a) 3.67 (b) 6.11 (c) 6.01 (d) 5.91
  22. 22.6.89 + 3.3 = ? (a) 7.22 (b) 10.29 (c) 10.19 (d) 10.09
  23. 23.What is the value of the digit 1 in 95.716? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  24. 24.What is the value of the digit 8 in 76.385? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  25. 25.Which is the greatest: 0.624, 0.083, 0.73, 0.7? (a) 0.624 (b) 0.083 (c) 0.73 (d) 0.7
  26. 26.1.99 + 9.8 = ? (a) 11.79 (b) 2.97 (c) 11.89 (d) 11.69
  27. 27.Which is the greatest: 0.032, 0.7, 0.693, 0.71? (a) 0.032 (b) 0.7 (c) 0.693 (d) 0.71
  28. 28.3.91 + 4.7 = ? (a) 8.61 (b) 8.51 (c) 4.38 (d) 8.71
  29. 29.8.57 + 4.9 = ? (a) 13.57 (b) 9.06 (c) 13.37 (d) 13.47
  30. 30.5.82 + 5.8 = ? (a) 11.72 (b) 11.52 (c) 11.62 (d) 6.4
  31. 31.What is the value of the digit 8 in 46.918? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  32. 32.Which is the smallest: 0.016, 0.2, 0.111, 0.26? (a) 0.016 (b) 0.2 (c) 0.111 (d) 0.26
  33. 33.Which is the greatest: 0.71, 0.7, 0.657, 0.078? (a) 0.71 (b) 0.7 (c) 0.657 (d) 0.078
  34. 34.What is the value of the digit 5 in 14.835? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  35. 35.What is the value of the digit 9 in 35.894? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  36. 36.3.73 + 4.2 = ? (a) 4.15 (b) 8.03 (c) 7.83 (d) 7.93
  37. 37.7.41 + 2.5 = ? (a) 7.66 (b) 9.91 (c) 10.01 (d) 9.81
  38. 38.Which is the smallest: 0.174, 0.28, 0.2, 0.055? (a) 0.174 (b) 0.28 (c) 0.2 (d) 0.055
  39. 39.3.13 + 3.9 = ? (a) 3.52 (b) 7.13 (c) 6.93 (d) 7.03
  40. 40.2.71 + 1.2 = ? (a) 3.91 (b) 2.83 (c) 3.81 (d) 4.01

Answer key

  1. 12.31
  2. 80
  3. 0.02
  4. 50
  5. 0.83
  6. 0.55
  7. 11.54
  8. 13.14
  9. 6.87
  10. 0.002
  11. 16.22
  12. 9.27
  13. 0.5
  14. 8.59
  15. 0.21
  16. 0.059
  17. 20
  18. 10.11
  19. 8.51
  20. 0.094
  21. 6.01
  22. 10.19
  23. 0.01
  24. 0.08
  25. 0.73
  26. 11.79
  27. 0.71
  28. 8.61
  29. 13.47
  30. 11.62
  31. 0.008
  32. 0.016
  33. 0.71
  34. 0.005
  35. 0.09
  36. 7.93
  37. 9.91
  38. 0.055
  39. 7.03
  40. 3.91

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