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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 104 · 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 6 in 36.159? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  2. 2.8.65 + 1.9 = ? (a) 10.55 (b) 8.84 (c) 10.65 (d) 10.45
  3. 3.What is the value of the digit 4 in 17.642? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  4. 4.What is the value of the digit 3 in 23.478? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  5. 5.3.61 + 8.2 = ? (a) 4.43 (b) 11.71 (c) 11.81 (d) 11.91
  6. 6.Which is the smallest: 0.061, 0.79, 0.611, 0.7? (a) 0.061 (b) 0.79 (c) 0.611 (d) 0.7
  7. 7.Which is the greatest: 0.149, 0.042, 0.28, 0.2? (a) 0.149 (b) 0.042 (c) 0.28 (d) 0.2
  8. 8.8.89 + 9.7 = ? (a) 9.86 (b) 18.59 (c) 18.49 (d) 18.69
  9. 9.Which is the greatest: 0.75, 0.042, 0.7, 0.661? (a) 0.75 (b) 0.042 (c) 0.7 (d) 0.661
  10. 10.7.63 + 4.1 = ? (a) 8.04 (b) 11.83 (c) 11.63 (d) 11.73
  11. 11.Which is the greatest: 0.367, 0.44, 0.4, 0.042? (a) 0.367 (b) 0.44 (c) 0.4 (d) 0.042
  12. 12.2.89 + 7.1 = ? (a) 10.09 (b) 3.6 (c) 9.99 (d) 9.89
  13. 13.2.08 + 6.2 = ? (a) 8.18 (b) 8.38 (c) 8.28 (d) 2.7
  14. 14.Which is the greatest: 0.52, 0.5, 0.061, 0.482? (a) 0.52 (b) 0.5 (c) 0.061 (d) 0.482
  15. 15.What is the value of the digit 9 in 24.795? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  16. 16.3.38 + 1.5 = ? (a) 3.53 (b) 4.98 (c) 4.78 (d) 4.88
  17. 17.1.61 + 1.9 = ? (a) 3.41 (b) 3.51 (c) 1.8 (d) 3.61
  18. 18.6.27 + 3.8 = ? (a) 10.07 (b) 6.65 (c) 9.97 (d) 10.17
  19. 19.4.89 + 9.3 = ? (a) 14.09 (b) 14.29 (c) 5.82 (d) 14.19
  20. 20.Which is the greatest: 0.53, 0.413, 0.027, 0.5? (a) 0.53 (b) 0.413 (c) 0.027 (d) 0.5
  21. 21.Which is the greatest: 0.8, 0.86, 0.793, 0.016? (a) 0.8 (b) 0.86 (c) 0.793 (d) 0.016
  22. 22.What is the value of the digit 3 in 31.952? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  23. 23.What is the value of the digit 2 in 71.542? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  24. 24.What is the value of the digit 9 in 16.938? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  25. 25.What is the value of the digit 3 in 71.823? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  26. 26.2.84 + 8.3 = ? (a) 3.67 (b) 11.04 (c) 11.24 (d) 11.14
  27. 27.Which is the smallest: 0.363, 0.49, 0.4, 0.034? (a) 0.363 (b) 0.49 (c) 0.4 (d) 0.034
  28. 28.1.58 + 3.1 = ? (a) 4.68 (b) 4.58 (c) 1.89 (d) 4.78
  29. 29.Which is the greatest: 0.029, 0.41, 0.321, 0.4? (a) 0.029 (b) 0.41 (c) 0.321 (d) 0.4
  30. 30.9.42 + 7.4 = ? (a) 16.92 (b) 16.72 (c) 16.82 (d) 10.16
  31. 31.What is the value of the digit 3 in 87.319? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  32. 32.6.18 + 6.6 = ? (a) 12.88 (b) 12.78 (c) 12.68 (d) 6.84
  33. 33.What is the value of the digit 6 in 36.195? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  34. 34.What is the value of the digit 3 in 31.975? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  35. 35.4.44 + 8.3 = ? (a) 5.27 (b) 12.64 (c) 12.84 (d) 12.74
  36. 36.What is the value of the digit 6 in 76.253? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  37. 37.3.01 + 8.4 = ? (a) 11.41 (b) 3.85 (c) 11.51 (d) 11.31
  38. 38.Which is the greatest: 0.079, 0.32, 0.3, 0.217? (a) 0.079 (b) 0.32 (c) 0.3 (d) 0.217
  39. 39.Which is the smallest: 0.27, 0.034, 0.2, 0.143? (a) 0.27 (b) 0.034 (c) 0.2 (d) 0.143
  40. 40.What is the value of the digit 9 in 72.589? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9

Answer key

  1. 6
  2. 10.55
  3. 0.04
  4. 3
  5. 11.81
  6. 0.061
  7. 0.28
  8. 18.59
  9. 0.75
  10. 11.73
  11. 0.44
  12. 9.99
  13. 8.28
  14. 0.52
  15. 0.09
  16. 4.88
  17. 3.51
  18. 10.07
  19. 14.19
  20. 0.53
  21. 0.86
  22. 30
  23. 0.002
  24. 0.9
  25. 0.003
  26. 11.14
  27. 0.034
  28. 4.68
  29. 0.41
  30. 16.82
  31. 0.3
  32. 12.78
  33. 6
  34. 30
  35. 12.74
  36. 6
  37. 11.41
  38. 0.32
  39. 0.034
  40. 0.009

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