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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 85 · 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.Which is the greatest: 0.051, 0.3, 0.258, 0.37? (a) 0.051 (b) 0.3 (c) 0.258 (d) 0.37
  2. 2.Which is the smallest: 0.139, 0.2, 0.025, 0.28? (a) 0.139 (b) 0.2 (c) 0.025 (d) 0.28
  3. 3.9.53 + 6.9 = ? (a) 16.53 (b) 16.33 (c) 10.22 (d) 16.43
  4. 4.3.62 + 1.7 = ? (a) 5.32 (b) 5.22 (c) 5.42 (d) 3.79
  5. 5.What is the value of the digit 9 in 89.327? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  6. 6.Which is the greatest: 0.8, 0.766, 0.029, 0.82? (a) 0.8 (b) 0.766 (c) 0.029 (d) 0.82
  7. 7.What is the value of the digit 4 in 47.639? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  8. 8.4.38 + 6.1 = ? (a) 10.58 (b) 10.48 (c) 10.38 (d) 4.99
  9. 9.Which is the smallest: 0.48, 0.034, 0.4, 0.379? (a) 0.48 (b) 0.034 (c) 0.4 (d) 0.379
  10. 10.What is the value of the digit 3 in 53.486? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  11. 11.Which is the greatest: 0.099, 0.696, 0.7, 0.78? (a) 0.099 (b) 0.696 (c) 0.7 (d) 0.78
  12. 12.Which is the smallest: 0.573, 0.6, 0.029, 0.62? (a) 0.573 (b) 0.6 (c) 0.029 (d) 0.62
  13. 13.Which is the smallest: 0.015, 0.632, 0.7, 0.78? (a) 0.015 (b) 0.632 (c) 0.7 (d) 0.78
  14. 14.Which is the greatest: 0.6, 0.63, 0.531, 0.086? (a) 0.6 (b) 0.63 (c) 0.531 (d) 0.086
  15. 15.Which is the smallest: 0.531, 0.021, 0.62, 0.6? (a) 0.531 (b) 0.021 (c) 0.62 (d) 0.6
  16. 16.Which is the smallest: 0.059, 0.177, 0.29, 0.2? (a) 0.059 (b) 0.177 (c) 0.29 (d) 0.2
  17. 17.What is the value of the digit 7 in 79.682? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  18. 18.4.24 + 2.4 = ? (a) 6.74 (b) 4.48 (c) 6.64 (d) 6.54
  19. 19.3.22 + 3.1 = ? (a) 6.42 (b) 3.53 (c) 6.32 (d) 6.22
  20. 20.Which is the greatest: 0.35, 0.231, 0.068, 0.3? (a) 0.35 (b) 0.231 (c) 0.068 (d) 0.3
  21. 21.What is the value of the digit 5 in 57.894? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  22. 22.Which is the smallest: 0.798, 0.81, 0.8, 0.095? (a) 0.798 (b) 0.81 (c) 0.8 (d) 0.095
  23. 23.What is the value of the digit 2 in 34.728? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  24. 24.What is the value of the digit 2 in 25.874? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  25. 25.4.33 + 2.3 = ? (a) 6.63 (b) 6.73 (c) 6.53 (d) 4.56
  26. 26.7.81 + 5.8 = ? (a) 13.51 (b) 13.71 (c) 13.61 (d) 8.39
  27. 27.Which is the smallest: 0.7, 0.74, 0.014, 0.654? (a) 0.7 (b) 0.74 (c) 0.014 (d) 0.654
  28. 28.3.21 + 8.9 = ? (a) 12.01 (b) 12.11 (c) 4.1 (d) 12.21
  29. 29.Which is the smallest: 0.738, 0.015, 0.87, 0.8? (a) 0.738 (b) 0.015 (c) 0.87 (d) 0.8
  30. 30.7.79 + 9.8 = ? (a) 8.77 (b) 17.69 (c) 17.59 (d) 17.49
  31. 31.Which is the smallest: 0.745, 0.89, 0.013, 0.8? (a) 0.745 (b) 0.89 (c) 0.013 (d) 0.8
  32. 32.What is the value of the digit 2 in 95.642? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  33. 33.What is the value of the digit 6 in 63.852? (a) 0.06 (b) 0.6 (c) 6 (d) 60
  34. 34.Which is the greatest: 0.32, 0.055, 0.256, 0.3? (a) 0.32 (b) 0.055 (c) 0.256 (d) 0.3
  35. 35.Which is the greatest: 0.035, 0.387, 0.4, 0.42? (a) 0.035 (b) 0.387 (c) 0.4 (d) 0.42
  36. 36.4.08 + 7.8 = ? (a) 11.88 (b) 11.78 (c) 4.86 (d) 11.98
  37. 37.5.19 + 1.8 = ? (a) 6.89 (b) 7.09 (c) 6.99 (d) 5.37
  38. 38.Which is the greatest: 0.166, 0.097, 0.22, 0.2? (a) 0.166 (b) 0.097 (c) 0.22 (d) 0.2
  39. 39.What is the value of the digit 9 in 34.198? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  40. 40.What is the value of the digit 3 in 43.692? (a) 3 (b) 0.03 (c) 0.3 (d) 30

Answer key

  1. 0.37
  2. 0.025
  3. 16.43
  4. 5.32
  5. 9
  6. 0.82
  7. 40
  8. 10.48
  9. 0.034
  10. 3
  11. 0.78
  12. 0.029
  13. 0.015
  14. 0.63
  15. 0.021
  16. 0.059
  17. 70
  18. 6.64
  19. 6.32
  20. 0.35
  21. 50
  22. 0.095
  23. 0.02
  24. 20
  25. 6.63
  26. 13.61
  27. 0.014
  28. 12.11
  29. 0.015
  30. 17.59
  31. 0.013
  32. 0.002
  33. 60
  34. 0.32
  35. 0.42
  36. 11.88
  37. 6.99
  38. 0.22
  39. 0.09
  40. 3

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