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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 641 · 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. 1.7.22 + 3.9 = ? (a) 11.02 (b) 11.22 (c) 7.61 (d) 11.12
  2. 2.What is the value of the digit 7 in 67.354? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  3. 3.What is the value of the digit 3 in 38.512? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  4. 4.Which is the smallest: 0.7, 0.78, 0.063, 0.678? (a) 0.7 (b) 0.78 (c) 0.063 (d) 0.678
  5. 5.6.15 + 9.5 = ? (a) 15.75 (b) 15.65 (c) 15.55 (d) 7.1
  6. 6.What is the value of the digit 2 in 41.528? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  7. 7.What is the value of the digit 5 in 62.549? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  8. 8.5.41 + 9.4 = ? (a) 14.71 (b) 14.81 (c) 14.91 (d) 6.35
  9. 9.What is the value of the digit 8 in 15.786? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  10. 10.Which is the greatest: 0.077, 0.57, 0.5, 0.437? (a) 0.077 (b) 0.57 (c) 0.5 (d) 0.437
  11. 11.1.84 + 9.4 = ? (a) 11.24 (b) 2.78 (c) 11.14 (d) 11.34
  12. 12.What is the value of the digit 3 in 27.395? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  13. 13.Which is the greatest: 0.36, 0.219, 0.032, 0.3? (a) 0.36 (b) 0.219 (c) 0.032 (d) 0.3
  14. 14.What is the value of the digit 8 in 96.148? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  15. 15.What is the value of the digit 1 in 45.193? (a) 1 (b) 0.001 (c) 0.1 (d) 0.01
  16. 16.What is the value of the digit 9 in 37.954? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  17. 17.4.05 + 2.1 = ? (a) 6.15 (b) 4.26 (c) 6.05 (d) 6.25
  18. 18.5.69 + 6.8 = ? (a) 12.49 (b) 12.59 (c) 12.39 (d) 6.37
  19. 19.5.19 + 5.5 = ? (a) 10.79 (b) 5.74 (c) 10.69 (d) 10.59
  20. 20.Which is the greatest: 0.064, 0.181, 0.29, 0.2? (a) 0.064 (b) 0.181 (c) 0.29 (d) 0.2
  21. 21.3.61 + 2.1 = ? (a) 5.81 (b) 3.82 (c) 5.71 (d) 5.61
  22. 22.5.78 + 3.5 = ? (a) 6.13 (b) 9.38 (c) 9.28 (d) 9.18
  23. 23.What is the value of the digit 9 in 92.843? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  24. 24.What is the value of the digit 9 in 52.394? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9
  25. 25.3.13 + 1.1 = ? (a) 4.13 (b) 3.24 (c) 4.23 (d) 4.33
  26. 26.5.73 + 5.1 = ? (a) 10.73 (b) 10.83 (c) 10.93 (d) 6.24
  27. 27.4.72 + 2.8 = ? (a) 5 (b) 7.62 (c) 7.52 (d) 7.42
  28. 28.Which is the greatest: 0.8, 0.714, 0.82, 0.094? (a) 0.8 (b) 0.714 (c) 0.82 (d) 0.094
  29. 29.What is the value of the digit 7 in 74.352? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  30. 30.5.53 + 3.1 = ? (a) 8.73 (b) 8.63 (c) 8.53 (d) 5.84
  31. 31.5.61 + 8.3 = ? (a) 14.01 (b) 6.44 (c) 13.81 (d) 13.91
  32. 32.Which is the greatest: 0.4, 0.022, 0.48, 0.386? (a) 0.4 (b) 0.022 (c) 0.48 (d) 0.386
  33. 33.Which is the greatest: 0.785, 0.82, 0.8, 0.057? (a) 0.785 (b) 0.82 (c) 0.8 (d) 0.057
  34. 34.Which is the smallest: 0.144, 0.064, 0.23, 0.2? (a) 0.144 (b) 0.064 (c) 0.23 (d) 0.2
  35. 35.What is the value of the digit 7 in 97.531? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  36. 36.4.17 + 6.8 = ? (a) 4.85 (b) 11.07 (c) 10.87 (d) 10.97
  37. 37.5.61 + 7.9 = ? (a) 13.41 (b) 13.51 (c) 6.4 (d) 13.61
  38. 38.Which is the greatest: 0.126, 0.2, 0.22, 0.045? (a) 0.126 (b) 0.2 (c) 0.22 (d) 0.045
  39. 39.9.01 + 8.8 = ? (a) 17.81 (b) 9.89 (c) 17.71 (d) 17.91
  40. 40.Which is the smallest: 0.41, 0.378, 0.4, 0.073? (a) 0.41 (b) 0.378 (c) 0.4 (d) 0.073

Answer key

  1. 11.12
  2. 7
  3. 30
  4. 0.063
  5. 15.65
  6. 0.02
  7. 0.5
  8. 14.81
  9. 0.08
  10. 0.57
  11. 11.24
  12. 0.3
  13. 0.36
  14. 0.008
  15. 0.1
  16. 0.9
  17. 6.15
  18. 12.49
  19. 10.69
  20. 0.29
  21. 5.71
  22. 9.28
  23. 90
  24. 0.09
  25. 4.23
  26. 10.83
  27. 7.52
  28. 0.82
  29. 70
  30. 8.63
  31. 13.91
  32. 0.48
  33. 0.82
  34. 0.064
  35. 7
  36. 10.97
  37. 13.51
  38. 0.22
  39. 17.81
  40. 0.073

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