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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 382 · 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. 1.7.82 + 4.2 = ? (a) 12.12 (b) 12.02 (c) 8.24 (d) 11.92
  2. 2.Which is the greatest: 0.76, 0.032, 0.638, 0.7? (a) 0.76 (b) 0.032 (c) 0.638 (d) 0.7
  3. 3.What is the value of the digit 4 in 54.869? (a) 0.4 (b) 40 (c) 4 (d) 0.04
  4. 4.2.34 + 4.6 = ? (a) 6.84 (b) 6.94 (c) 2.8 (d) 7.04
  5. 5.8.18 + 1.4 = ? (a) 9.48 (b) 8.32 (c) 9.68 (d) 9.58
  6. 6.Which is the greatest: 0.7, 0.72, 0.092, 0.687? (a) 0.7 (b) 0.72 (c) 0.092 (d) 0.687
  7. 7.Which is the greatest: 0.488, 0.58, 0.5, 0.033? (a) 0.488 (b) 0.58 (c) 0.5 (d) 0.033
  8. 8.Which is the greatest: 0.032, 0.4, 0.323, 0.43? (a) 0.032 (b) 0.4 (c) 0.323 (d) 0.43
  9. 9.What is the value of the digit 8 in 42.685? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  10. 10.Which is the smallest: 0.033, 0.686, 0.7, 0.72? (a) 0.033 (b) 0.686 (c) 0.7 (d) 0.72
  11. 11.4.11 + 8.2 = ? (a) 4.93 (b) 12.21 (c) 12.41 (d) 12.31
  12. 12.1.48 + 2.9 = ? (a) 4.28 (b) 1.77 (c) 4.38 (d) 4.48
  13. 13.What is the value of the digit 4 in 29.143? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  14. 14.4.51 + 5.7 = ? (a) 10.31 (b) 10.11 (c) 5.08 (d) 10.21
  15. 15.3.43 + 8.9 = ? (a) 12.23 (b) 4.32 (c) 12.43 (d) 12.33
  16. 16.Which is the greatest: 0.58, 0.5, 0.055, 0.439? (a) 0.58 (b) 0.5 (c) 0.055 (d) 0.439
  17. 17.What is the value of the digit 1 in 35.641? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  18. 18.What is the value of the digit 1 in 24.391? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  19. 19.Which is the greatest: 0.139, 0.091, 0.2, 0.23? (a) 0.139 (b) 0.091 (c) 0.2 (d) 0.23
  20. 20.4.12 + 6.7 = ? (a) 4.79 (b) 10.92 (c) 10.72 (d) 10.82
  21. 21.Which is the greatest: 0.7, 0.622, 0.026, 0.79? (a) 0.7 (b) 0.622 (c) 0.026 (d) 0.79
  22. 22.What is the value of the digit 2 in 92.731? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  23. 23.Which is the greatest: 0.617, 0.78, 0.055, 0.7? (a) 0.617 (b) 0.78 (c) 0.055 (d) 0.7
  24. 24.What is the value of the digit 8 in 19.857? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  25. 25.What is the value of the digit 8 in 38.197? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  26. 26.What is the value of the digit 5 in 49.875? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  27. 27.What is the value of the digit 6 in 23.146? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  28. 28.3.71 + 4.1 = ? (a) 4.12 (b) 7.91 (c) 7.81 (d) 7.71
  29. 29.6.41 + 3.7 = ? (a) 10.01 (b) 10.11 (c) 6.78 (d) 10.21
  30. 30.9.66 + 7.8 = ? (a) 10.44 (b) 17.56 (c) 17.46 (d) 17.36
  31. 31.8.31 + 9.1 = ? (a) 17.41 (b) 17.31 (c) 17.51 (d) 9.22
  32. 32.9.36 + 1.7 = ? (a) 10.96 (b) 11.16 (c) 11.06 (d) 9.53
  33. 33.Which is the smallest: 0.7, 0.79, 0.681, 0.053? (a) 0.7 (b) 0.79 (c) 0.681 (d) 0.053
  34. 34.Which is the greatest: 0.035, 0.5, 0.52, 0.435? (a) 0.035 (b) 0.5 (c) 0.52 (d) 0.435
  35. 35.5.48 + 2.3 = ? (a) 7.78 (b) 5.71 (c) 7.88 (d) 7.68
  36. 36.What is the value of the digit 4 in 83.942? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  37. 37.What is the value of the digit 2 in 92.456? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  38. 38.Which is the greatest: 0.25, 0.032, 0.114, 0.2? (a) 0.25 (b) 0.032 (c) 0.114 (d) 0.2
  39. 39.Which is the smallest: 0.62, 0.6, 0.582, 0.093? (a) 0.62 (b) 0.6 (c) 0.582 (d) 0.093
  40. 40.Which is the smallest: 0.051, 0.683, 0.76, 0.7? (a) 0.051 (b) 0.683 (c) 0.76 (d) 0.7

Answer key

  1. 12.02
  2. 0.76
  3. 4
  4. 6.94
  5. 9.58
  6. 0.72
  7. 0.58
  8. 0.43
  9. 0.08
  10. 0.033
  11. 12.31
  12. 4.38
  13. 0.04
  14. 10.21
  15. 12.33
  16. 0.58
  17. 0.001
  18. 0.001
  19. 0.23
  20. 10.82
  21. 0.79
  22. 2
  23. 0.78
  24. 0.8
  25. 8
  26. 0.005
  27. 0.006
  28. 7.81
  29. 10.11
  30. 17.46
  31. 17.41
  32. 11.06
  33. 0.053
  34. 0.52
  35. 7.78
  36. 0.04
  37. 2
  38. 0.25
  39. 0.093
  40. 0.051

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