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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 801 · 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. 1.4.99 + 2.7 = ? (a) 7.79 (b) 5.26 (c) 7.59 (d) 7.69
  2. 2.Which is the smallest: 0.029, 0.32, 0.3, 0.285? (a) 0.029 (b) 0.32 (c) 0.3 (d) 0.285
  3. 3.6.55 + 6.2 = ? (a) 12.65 (b) 12.75 (c) 12.85 (d) 7.17
  4. 4.9.51 + 1.4 = ? (a) 10.91 (b) 10.81 (c) 11.01 (d) 9.65
  5. 5.7.67 + 3.2 = ? (a) 10.87 (b) 7.99 (c) 10.77 (d) 10.97
  6. 6.What is the value of the digit 8 in 94.718? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  7. 7.What is the value of the digit 1 in 14.978? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  8. 8.3.64 + 4.1 = ? (a) 7.74 (b) 7.84 (c) 7.64 (d) 4.05
  9. 9.2.11 + 6.8 = ? (a) 8.91 (b) 8.81 (c) 2.79 (d) 9.01
  10. 10.7.37 + 1.6 = ? (a) 9.07 (b) 8.87 (c) 7.53 (d) 8.97
  11. 11.Which is the smallest: 0.017, 0.78, 0.7, 0.677? (a) 0.017 (b) 0.78 (c) 0.7 (d) 0.677
  12. 12.What is the value of the digit 7 in 97.684? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  13. 13.What is the value of the digit 1 in 62.715? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  14. 14.What is the value of the digit 7 in 15.732? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  15. 15.Which is the greatest: 0.44, 0.4, 0.384, 0.046? (a) 0.44 (b) 0.4 (c) 0.384 (d) 0.046
  16. 16.Which is the smallest: 0.69, 0.6, 0.087, 0.568? (a) 0.69 (b) 0.6 (c) 0.087 (d) 0.568
  17. 17.Which is the smallest: 0.336, 0.013, 0.4, 0.46? (a) 0.336 (b) 0.013 (c) 0.4 (d) 0.46
  18. 18.Which is the greatest: 0.2, 0.171, 0.096, 0.26? (a) 0.2 (b) 0.171 (c) 0.096 (d) 0.26
  19. 19.What is the value of the digit 6 in 14.326? (a) 6 (b) 0.6 (c) 0.006 (d) 0.06
  20. 20.What is the value of the digit 5 in 32.596? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  21. 21.What is the value of the digit 7 in 35.786? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  22. 22.Which is the smallest: 0.8, 0.88, 0.025, 0.759? (a) 0.8 (b) 0.88 (c) 0.025 (d) 0.759
  23. 23.Which is the smallest: 0.471, 0.56, 0.014, 0.5? (a) 0.471 (b) 0.56 (c) 0.014 (d) 0.5
  24. 24.6.77 + 9.1 = ? (a) 7.68 (b) 15.77 (c) 15.97 (d) 15.87
  25. 25.Which is the greatest: 0.6, 0.67, 0.512, 0.077? (a) 0.6 (b) 0.67 (c) 0.512 (d) 0.077
  26. 26.Which is the smallest: 0.88, 0.011, 0.764, 0.8? (a) 0.88 (b) 0.011 (c) 0.764 (d) 0.8
  27. 27.What is the value of the digit 2 in 27.893? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  28. 28.4.01 + 3.8 = ? (a) 7.81 (b) 7.91 (c) 4.39 (d) 7.71
  29. 29.What is the value of the digit 3 in 17.385? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  30. 30.2.18 + 8.7 = ? (a) 3.05 (b) 10.78 (c) 10.88 (d) 10.98
  31. 31.5.93 + 5.8 = ? (a) 6.51 (b) 11.63 (c) 11.83 (d) 11.73
  32. 32.8.51 + 8.1 = ? (a) 16.51 (b) 16.71 (c) 16.61 (d) 9.32
  33. 33.2.47 + 2.1 = ? (a) 4.57 (b) 2.68 (c) 4.67 (d) 4.47
  34. 34.6.83 + 8.1 = ? (a) 15.03 (b) 14.83 (c) 14.93 (d) 7.64
  35. 35.4.61 + 7.2 = ? (a) 11.81 (b) 11.91 (c) 5.33 (d) 11.71
  36. 36.What is the value of the digit 7 in 76.543? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  37. 37.9.89 + 1.7 = ? (a) 11.49 (b) 11.59 (c) 10.06 (d) 11.69
  38. 38.What is the value of the digit 9 in 35.496? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  39. 39.Which is the greatest: 0.28, 0.062, 0.131, 0.2? (a) 0.28 (b) 0.062 (c) 0.131 (d) 0.2
  40. 40.What is the value of the digit 4 in 85.461? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4

Answer key

  1. 7.69
  2. 0.029
  3. 12.75
  4. 10.91
  5. 10.87
  6. 0.008
  7. 10
  8. 7.74
  9. 8.91
  10. 8.97
  11. 0.017
  12. 7
  13. 0.01
  14. 0.7
  15. 0.44
  16. 0.087
  17. 0.013
  18. 0.26
  19. 0.006
  20. 0.5
  21. 0.7
  22. 0.025
  23. 0.014
  24. 15.87
  25. 0.67
  26. 0.011
  27. 20
  28. 7.81
  29. 0.3
  30. 10.88
  31. 11.73
  32. 16.61
  33. 4.57
  34. 14.93
  35. 11.81
  36. 70
  37. 11.59
  38. 0.09
  39. 0.28
  40. 0.4

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