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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 371 · 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.What is the value of the digit 2 in 79.125? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  2. 2.9.04 + 2.9 = ? (a) 9.33 (b) 12.04 (c) 11.84 (d) 11.94
  3. 3.4.71 + 8.3 = ? (a) 5.54 (b) 12.91 (c) 13.01 (d) 13.11
  4. 4.What is the value of the digit 6 in 62.479? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  5. 5.8.71 + 3.1 = ? (a) 9.02 (b) 11.81 (c) 11.91 (d) 11.71
  6. 6.Which is the greatest: 0.82, 0.048, 0.751, 0.8? (a) 0.82 (b) 0.048 (c) 0.751 (d) 0.8
  7. 7.Which is the smallest: 0.054, 0.6, 0.598, 0.63? (a) 0.054 (b) 0.6 (c) 0.598 (d) 0.63
  8. 8.1.47 + 7.4 = ? (a) 8.97 (b) 8.77 (c) 2.21 (d) 8.87
  9. 9.What is the value of the digit 7 in 31.574? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  10. 10.Which is the smallest: 0.7, 0.78, 0.083, 0.684? (a) 0.7 (b) 0.78 (c) 0.083 (d) 0.684
  11. 11.What is the value of the digit 9 in 84.925? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  12. 12.What is the value of the digit 2 in 27.395? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  13. 13.1.98 + 1.6 = ? (a) 3.68 (b) 3.58 (c) 3.48 (d) 2.14
  14. 14.1.66 + 2.7 = ? (a) 4.46 (b) 4.36 (c) 1.93 (d) 4.26
  15. 15.5.61 + 1.2 = ? (a) 6.71 (b) 5.73 (c) 6.81 (d) 6.91
  16. 16.Which is the smallest: 0.096, 0.8, 0.85, 0.792? (a) 0.096 (b) 0.8 (c) 0.85 (d) 0.792
  17. 17.9.24 + 8.2 = ? (a) 17.34 (b) 17.44 (c) 10.06 (d) 17.54
  18. 18.6.32 + 2.2 = ? (a) 8.52 (b) 8.42 (c) 6.54 (d) 8.62
  19. 19.What is the value of the digit 4 in 49.765? (a) 40 (b) 0.04 (c) 4 (d) 0.4
  20. 20.What is the value of the digit 2 in 28.615? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  21. 21.What is the value of the digit 2 in 92.781? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  22. 22.2.71 + 4.5 = ? (a) 7.21 (b) 7.31 (c) 3.16 (d) 7.11
  23. 23.Which is the smallest: 0.433, 0.53, 0.087, 0.5? (a) 0.433 (b) 0.53 (c) 0.087 (d) 0.5
  24. 24.Which is the smallest: 0.29, 0.2, 0.013, 0.171? (a) 0.29 (b) 0.2 (c) 0.013 (d) 0.171
  25. 25.6.04 + 8.1 = ? (a) 6.85 (b) 14.24 (c) 14.04 (d) 14.14
  26. 26.8.61 + 3.3 = ? (a) 11.91 (b) 12.01 (c) 11.81 (d) 8.94
  27. 27.9.31 + 4.7 = ? (a) 13.91 (b) 9.78 (c) 14.01 (d) 14.11
  28. 28.Which is the smallest: 0.49, 0.047, 0.4, 0.322? (a) 0.49 (b) 0.047 (c) 0.4 (d) 0.322
  29. 29.Which is the smallest: 0.226, 0.32, 0.067, 0.3? (a) 0.226 (b) 0.32 (c) 0.067 (d) 0.3
  30. 30.What is the value of the digit 5 in 76.153? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  31. 31.What is the value of the digit 3 in 12.936? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03
  32. 32.7.51 + 2.7 = ? (a) 7.78 (b) 10.21 (c) 10.31 (d) 10.11
  33. 33.2.24 + 4.4 = ? (a) 6.54 (b) 6.74 (c) 6.64 (d) 2.68
  34. 34.What is the value of the digit 9 in 38.926? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  35. 35.What is the value of the digit 5 in 52.347? (a) 5 (b) 0.05 (c) 0.5 (d) 50
  36. 36.3.76 + 9.6 = ? (a) 4.72 (b) 13.36 (c) 13.26 (d) 13.46
  37. 37.Which is the greatest: 0.8, 0.84, 0.013, 0.757? (a) 0.8 (b) 0.84 (c) 0.013 (d) 0.757
  38. 38.Which is the smallest: 0.387, 0.48, 0.031, 0.4? (a) 0.387 (b) 0.48 (c) 0.031 (d) 0.4
  39. 39.What is the value of the digit 3 in 53.641? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  40. 40.1.19 + 2.1 = ? (a) 3.19 (b) 3.39 (c) 3.29 (d) 1.4

Answer key

  1. 0.02
  2. 11.94
  3. 13.01
  4. 60
  5. 11.81
  6. 0.82
  7. 0.054
  8. 8.87
  9. 0.07
  10. 0.083
  11. 0.9
  12. 20
  13. 3.58
  14. 4.36
  15. 6.81
  16. 0.096
  17. 17.44
  18. 8.52
  19. 40
  20. 20
  21. 2
  22. 7.21
  23. 0.087
  24. 0.013
  25. 14.14
  26. 11.91
  27. 14.01
  28. 0.047
  29. 0.067
  30. 0.05
  31. 0.03
  32. 10.21
  33. 6.64
  34. 0.9
  35. 50
  36. 13.36
  37. 0.84
  38. 0.031
  39. 3
  40. 3.29

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