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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 833 · 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. 1.6.83 + 5.1 = ? (a) 7.34 (b) 12.03 (c) 11.83 (d) 11.93
  2. 2.What is the value of the digit 7 in 27.819? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  3. 3.2.15 + 1.6 = ? (a) 3.75 (b) 3.85 (c) 2.31 (d) 3.65
  4. 4.Which is the smallest: 0.5, 0.59, 0.027, 0.441? (a) 0.5 (b) 0.59 (c) 0.027 (d) 0.441
  5. 5.6.03 + 8.5 = ? (a) 14.63 (b) 6.88 (c) 14.43 (d) 14.53
  6. 6.7.41 + 2.2 = ? (a) 7.63 (b) 9.51 (c) 9.71 (d) 9.61
  7. 7.5.37 + 7.1 = ? (a) 6.08 (b) 12.47 (c) 12.57 (d) 12.37
  8. 8.4.04 + 6.9 = ? (a) 4.73 (b) 10.84 (c) 11.04 (d) 10.94
  9. 9.6.97 + 2.4 = ? (a) 9.27 (b) 7.21 (c) 9.37 (d) 9.47
  10. 10.What is the value of the digit 7 in 18.725? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  11. 11.What is the value of the digit 8 in 31.842? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  12. 12.Which is the smallest: 0.039, 0.27, 0.2, 0.111? (a) 0.039 (b) 0.27 (c) 0.2 (d) 0.111
  13. 13.Which is the smallest: 0.524, 0.022, 0.6, 0.64? (a) 0.524 (b) 0.022 (c) 0.6 (d) 0.64
  14. 14.What is the value of the digit 7 in 49.637? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  15. 15.5.08 + 7.2 = ? (a) 12.28 (b) 5.8 (c) 12.38 (d) 12.18
  16. 16.Which is the greatest: 0.431, 0.52, 0.055, 0.5? (a) 0.431 (b) 0.52 (c) 0.055 (d) 0.5
  17. 17.What is the value of the digit 5 in 72.953? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  18. 18.3.01 + 9.8 = ? (a) 3.99 (b) 12.81 (c) 12.71 (d) 12.91
  19. 19.Which is the smallest: 0.079, 0.6, 0.64, 0.529? (a) 0.079 (b) 0.6 (c) 0.64 (d) 0.529
  20. 20.What is the value of the digit 8 in 48.936? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  21. 21.What is the value of the digit 6 in 23.617? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  22. 22.What is the value of the digit 8 in 52.841? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  23. 23.What is the value of the digit 5 in 25.894? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  24. 24.1.42 + 4.3 = ? (a) 5.62 (b) 5.82 (c) 5.72 (d) 1.85
  25. 25.6.45 + 1.4 = ? (a) 7.75 (b) 6.59 (c) 7.85 (d) 7.95
  26. 26.Which is the greatest: 0.054, 0.321, 0.45, 0.4? (a) 0.054 (b) 0.321 (c) 0.45 (d) 0.4
  27. 27.Which is the greatest: 0.33, 0.212, 0.3, 0.063? (a) 0.33 (b) 0.212 (c) 0.3 (d) 0.063
  28. 28.Which is the greatest: 0.072, 0.3, 0.37, 0.217? (a) 0.072 (b) 0.3 (c) 0.37 (d) 0.217
  29. 29.3.34 + 7.8 = ? (a) 11.14 (b) 4.12 (c) 11.24 (d) 11.04
  30. 30.1.94 + 5.1 = ? (a) 2.45 (b) 6.94 (c) 7.04 (d) 7.14
  31. 31.5.22 + 6.2 = ? (a) 5.84 (b) 11.42 (c) 11.32 (d) 11.52
  32. 32.8.38 + 6.1 = ? (a) 8.99 (b) 14.58 (c) 14.38 (d) 14.48
  33. 33.What is the value of the digit 4 in 67.954? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  34. 34.Which is the smallest: 0.381, 0.43, 0.4, 0.099? (a) 0.381 (b) 0.43 (c) 0.4 (d) 0.099
  35. 35.Which is the smallest: 0.094, 0.547, 0.67, 0.6? (a) 0.094 (b) 0.547 (c) 0.67 (d) 0.6
  36. 36.1.03 + 7.2 = ? (a) 1.75 (b) 8.23 (c) 8.33 (d) 8.13
  37. 37.5.86 + 5.6 = ? (a) 11.36 (b) 11.46 (c) 6.42 (d) 11.56
  38. 38.What is the value of the digit 2 in 59.628? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  39. 39.Which is the greatest: 0.48, 0.4, 0.072, 0.374? (a) 0.48 (b) 0.4 (c) 0.072 (d) 0.374
  40. 40.What is the value of the digit 6 in 62.371? (a) 60 (b) 0.06 (c) 0.6 (d) 6

Answer key

  1. 11.93
  2. 7
  3. 3.75
  4. 0.027
  5. 14.53
  6. 9.61
  7. 12.47
  8. 10.94
  9. 9.37
  10. 0.7
  11. 0.8
  12. 0.039
  13. 0.022
  14. 0.007
  15. 12.28
  16. 0.52
  17. 0.05
  18. 12.81
  19. 0.079
  20. 8
  21. 0.6
  22. 0.8
  23. 5
  24. 5.72
  25. 7.85
  26. 0.45
  27. 0.33
  28. 0.37
  29. 11.14
  30. 7.04
  31. 11.42
  32. 14.48
  33. 0.004
  34. 0.099
  35. 0.094
  36. 8.23
  37. 11.46
  38. 0.02
  39. 0.48
  40. 60

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