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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 248 · 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. 1.9.87 + 7.4 = ? (a) 17.37 (b) 17.17 (c) 10.61 (d) 17.27
  2. 2.What is the value of the digit 3 in 23.698? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  3. 3.What is the value of the digit 3 in 32.718? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  4. 4.What is the value of the digit 5 in 81.753? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  5. 5.Which is the smallest: 0.064, 0.5, 0.55, 0.488? (a) 0.064 (b) 0.5 (c) 0.55 (d) 0.488
  6. 6.7.28 + 1.6 = ? (a) 8.78 (b) 7.44 (c) 8.88 (d) 8.98
  7. 7.1.65 + 7.9 = ? (a) 9.65 (b) 9.45 (c) 2.44 (d) 9.55
  8. 8.What is the value of the digit 8 in 92.168? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  9. 9.9.21 + 5.5 = ? (a) 9.76 (b) 14.71 (c) 14.81 (d) 14.61
  10. 10.Which is the greatest: 0.2, 0.27, 0.061, 0.161? (a) 0.2 (b) 0.27 (c) 0.061 (d) 0.161
  11. 11.4.12 + 8.1 = ? (a) 12.22 (b) 4.93 (c) 12.12 (d) 12.32
  12. 12.7.47 + 3.1 = ? (a) 10.47 (b) 10.57 (c) 10.67 (d) 7.78
  13. 13.8.21 + 2.1 = ? (a) 10.41 (b) 10.21 (c) 8.42 (d) 10.31
  14. 14.Which is the greatest: 0.3, 0.242, 0.36, 0.097? (a) 0.3 (b) 0.242 (c) 0.36 (d) 0.097
  15. 15.Which is the greatest: 0.285, 0.036, 0.3, 0.33? (a) 0.285 (b) 0.036 (c) 0.3 (d) 0.33
  16. 16.5.66 + 7.5 = ? (a) 6.41 (b) 13.06 (c) 13.16 (d) 13.26
  17. 17.Which is the smallest: 0.6, 0.68, 0.066, 0.598? (a) 0.6 (b) 0.68 (c) 0.066 (d) 0.598
  18. 18.Which is the greatest: 0.094, 0.32, 0.285, 0.3? (a) 0.094 (b) 0.32 (c) 0.285 (d) 0.3
  19. 19.Which is the smallest: 0.036, 0.82, 0.738, 0.8? (a) 0.036 (b) 0.82 (c) 0.738 (d) 0.8
  20. 20.Which is the greatest: 0.067, 0.8, 0.724, 0.82? (a) 0.067 (b) 0.8 (c) 0.724 (d) 0.82
  21. 21.What is the value of the digit 8 in 28.691? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  22. 22.What is the value of the digit 5 in 28.475? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  23. 23.What is the value of the digit 2 in 15.924? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  24. 24.What is the value of the digit 5 in 69.375? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  25. 25.9.59 + 3.4 = ? (a) 12.89 (b) 12.99 (c) 9.93 (d) 13.09
  26. 26.Which is the greatest: 0.043, 0.5, 0.493, 0.51? (a) 0.043 (b) 0.5 (c) 0.493 (d) 0.51
  27. 27.Which is the greatest: 0.084, 0.7, 0.625, 0.73? (a) 0.084 (b) 0.7 (c) 0.625 (d) 0.73
  28. 28.7.87 + 4.9 = ? (a) 12.67 (b) 12.77 (c) 12.87 (d) 8.36
  29. 29.What is the value of the digit 8 in 72.583? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  30. 30.3.19 + 5.3 = ? (a) 3.72 (b) 8.49 (c) 8.59 (d) 8.39
  31. 31.1.14 + 9.5 = ? (a) 2.09 (b) 10.64 (c) 10.74 (d) 10.54
  32. 32.8.43 + 7.2 = ? (a) 15.63 (b) 15.53 (c) 15.73 (d) 9.15
  33. 33.What is the value of the digit 2 in 28.514? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  34. 34.What is the value of the digit 4 in 42.135? (a) 0.04 (b) 0.4 (c) 4 (d) 40
  35. 35.Which is the smallest: 0.62, 0.6, 0.521, 0.053? (a) 0.62 (b) 0.6 (c) 0.521 (d) 0.053
  36. 36.5.56 + 2.8 = ? (a) 8.26 (b) 5.84 (c) 8.46 (d) 8.36
  37. 37.Which is the greatest: 0.279, 0.31, 0.3, 0.094? (a) 0.279 (b) 0.31 (c) 0.3 (d) 0.094
  38. 38.Which is the greatest: 0.38, 0.057, 0.271, 0.3? (a) 0.38 (b) 0.057 (c) 0.271 (d) 0.3
  39. 39.Which is the greatest: 0.39, 0.233, 0.3, 0.054? (a) 0.39 (b) 0.233 (c) 0.3 (d) 0.054
  40. 40.Which is the greatest: 0.31, 0.223, 0.037, 0.3? (a) 0.31 (b) 0.223 (c) 0.037 (d) 0.3

Answer key

  1. 17.27
  2. 3
  3. 30
  4. 0.05
  5. 0.064
  6. 8.88
  7. 9.55
  8. 0.008
  9. 14.71
  10. 0.27
  11. 12.22
  12. 10.57
  13. 10.31
  14. 0.36
  15. 0.33
  16. 13.16
  17. 0.066
  18. 0.32
  19. 0.036
  20. 0.82
  21. 8
  22. 0.005
  23. 0.02
  24. 0.005
  25. 12.99
  26. 0.51
  27. 0.73
  28. 12.77
  29. 0.08
  30. 8.49
  31. 10.64
  32. 15.63
  33. 20
  34. 40
  35. 0.053
  36. 8.36
  37. 0.31
  38. 0.38
  39. 0.39
  40. 0.31

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