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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 190 · 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 5 in 54.912? (a) 50 (b) 0.05 (c) 0.5 (d) 5
  2. 2.8.55 + 2.4 = ? (a) 11.05 (b) 10.85 (c) 8.79 (d) 10.95
  3. 3.7.12 + 7.4 = ? (a) 14.62 (b) 14.52 (c) 7.86 (d) 14.42
  4. 4.Which is the greatest: 0.75, 0.653, 0.7, 0.047? (a) 0.75 (b) 0.653 (c) 0.7 (d) 0.047
  5. 5.Which is the smallest: 0.073, 0.4, 0.391, 0.47? (a) 0.073 (b) 0.4 (c) 0.391 (d) 0.47
  6. 6.3.39 + 6.1 = ? (a) 9.59 (b) 9.49 (c) 9.39 (d) 4
  7. 7.What is the value of the digit 4 in 53.214? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  8. 8.4.42 + 7.5 = ? (a) 11.92 (b) 11.82 (c) 5.17 (d) 12.02
  9. 9.Which is the greatest: 0.3, 0.293, 0.33, 0.021? (a) 0.3 (b) 0.293 (c) 0.33 (d) 0.021
  10. 10.4.31 + 5.3 = ? (a) 9.51 (b) 9.71 (c) 9.61 (d) 4.84
  11. 11.What is the value of the digit 8 in 48.961? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  12. 12.What is the value of the digit 2 in 47.286? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  13. 13.Which is the greatest: 0.59, 0.451, 0.5, 0.076? (a) 0.59 (b) 0.451 (c) 0.5 (d) 0.076
  14. 14.2.03 + 7.7 = ? (a) 9.73 (b) 9.63 (c) 2.8 (d) 9.83
  15. 15.Which is the smallest: 0.033, 0.56, 0.5, 0.453? (a) 0.033 (b) 0.56 (c) 0.5 (d) 0.453
  16. 16.7.76 + 9.4 = ? (a) 17.06 (b) 17.26 (c) 8.7 (d) 17.16
  17. 17.7.64 + 9.6 = ? (a) 17.24 (b) 8.6 (c) 17.14 (d) 17.34
  18. 18.Which is the greatest: 0.063, 0.362, 0.4, 0.43? (a) 0.063 (b) 0.362 (c) 0.4 (d) 0.43
  19. 19.9.85 + 1.7 = ? (a) 11.65 (b) 10.02 (c) 11.55 (d) 11.45
  20. 20.What is the value of the digit 7 in 43.572? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  21. 21.What is the value of the digit 2 in 82.163? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  22. 22.What is the value of the digit 9 in 92.368? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  23. 23.8.71 + 6.8 = ? (a) 9.39 (b) 15.51 (c) 15.41 (d) 15.61
  24. 24.2.18 + 4.1 = ? (a) 2.59 (b) 6.38 (c) 6.18 (d) 6.28
  25. 25.Which is the greatest: 0.475, 0.57, 0.048, 0.5? (a) 0.475 (b) 0.57 (c) 0.048 (d) 0.5
  26. 26.9.36 + 9.7 = ? (a) 18.96 (b) 19.16 (c) 10.33 (d) 19.06
  27. 27.Which is the greatest: 0.41, 0.4, 0.398, 0.019? (a) 0.41 (b) 0.4 (c) 0.398 (d) 0.019
  28. 28.5.52 + 2.3 = ? (a) 7.72 (b) 7.82 (c) 5.75 (d) 7.92
  29. 29.4.84 + 6.3 = ? (a) 5.47 (b) 11.24 (c) 11.04 (d) 11.14
  30. 30.Which is the greatest: 0.092, 0.8, 0.723, 0.88? (a) 0.092 (b) 0.8 (c) 0.723 (d) 0.88
  31. 31.What is the value of the digit 9 in 38.294? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  32. 32.4.44 + 1.9 = ? (a) 6.34 (b) 6.24 (c) 4.63 (d) 6.44
  33. 33.4.52 + 6.7 = ? (a) 11.12 (b) 11.32 (c) 11.22 (d) 5.19
  34. 34.6.69 + 1.1 = ? (a) 7.69 (b) 6.8 (c) 7.79 (d) 7.89
  35. 35.Which is the greatest: 0.75, 0.084, 0.7, 0.694? (a) 0.75 (b) 0.084 (c) 0.7 (d) 0.694
  36. 36.What is the value of the digit 7 in 31.794? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  37. 37.What is the value of the digit 3 in 23.654? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  38. 38.Which is the greatest: 0.3, 0.32, 0.235, 0.066? (a) 0.3 (b) 0.32 (c) 0.235 (d) 0.066
  39. 39.7.16 + 8.3 = ? (a) 15.36 (b) 15.56 (c) 15.46 (d) 7.99
  40. 40.Which is the smallest: 0.4, 0.41, 0.342, 0.043? (a) 0.4 (b) 0.41 (c) 0.342 (d) 0.043

Answer key

  1. 50
  2. 10.95
  3. 14.52
  4. 0.75
  5. 0.073
  6. 9.49
  7. 0.004
  8. 11.92
  9. 0.33
  10. 9.61
  11. 8
  12. 0.2
  13. 0.59
  14. 9.73
  15. 0.033
  16. 17.16
  17. 17.24
  18. 0.43
  19. 11.55
  20. 0.07
  21. 2
  22. 90
  23. 15.51
  24. 6.28
  25. 0.57
  26. 19.06
  27. 0.41
  28. 7.82
  29. 11.14
  30. 0.88
  31. 0.09
  32. 6.34
  33. 11.22
  34. 7.79
  35. 0.75
  36. 0.7
  37. 3
  38. 0.32
  39. 15.46
  40. 0.043

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