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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 459 · 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 smallest: 0.79, 0.632, 0.083, 0.7? (a) 0.79 (b) 0.632 (c) 0.083 (d) 0.7
  2. 2.8.99 + 3.9 = ? (a) 12.89 (b) 12.79 (c) 9.38 (d) 12.99
  3. 3.Which is the greatest: 0.099, 0.533, 0.6, 0.69? (a) 0.099 (b) 0.533 (c) 0.6 (d) 0.69
  4. 4.What is the value of the digit 2 in 51.237? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  5. 5.4.94 + 5.8 = ? (a) 10.64 (b) 10.84 (c) 5.52 (d) 10.74
  6. 6.Which is the greatest: 0.211, 0.31, 0.3, 0.029? (a) 0.211 (b) 0.31 (c) 0.3 (d) 0.029
  7. 7.7.54 + 8.8 = ? (a) 16.34 (b) 8.42 (c) 16.44 (d) 16.24
  8. 8.What is the value of the digit 1 in 81.234? (a) 10 (b) 1 (c) 0.01 (d) 0.1
  9. 9.8.74 + 2.9 = ? (a) 11.74 (b) 9.03 (c) 11.54 (d) 11.64
  10. 10.Which is the smallest: 0.722, 0.85, 0.8, 0.055? (a) 0.722 (b) 0.85 (c) 0.8 (d) 0.055
  11. 11.4.61 + 2.1 = ? (a) 6.71 (b) 4.82 (c) 6.61 (d) 6.81
  12. 12.9.61 + 4.4 = ? (a) 13.91 (b) 14.11 (c) 10.05 (d) 14.01
  13. 13.1.31 + 2.7 = ? (a) 3.91 (b) 4.11 (c) 1.58 (d) 4.01
  14. 14.5.61 + 8.9 = ? (a) 14.41 (b) 14.61 (c) 6.5 (d) 14.51
  15. 15.4.17 + 3.1 = ? (a) 7.27 (b) 7.17 (c) 7.37 (d) 4.48
  16. 16.Which is the greatest: 0.35, 0.266, 0.3, 0.031? (a) 0.35 (b) 0.266 (c) 0.3 (d) 0.031
  17. 17.What is the value of the digit 8 in 84.593? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  18. 18.1.05 + 5.7 = ? (a) 6.85 (b) 6.65 (c) 1.62 (d) 6.75
  19. 19.Which is the greatest: 0.086, 0.71, 0.7, 0.661? (a) 0.086 (b) 0.71 (c) 0.7 (d) 0.661
  20. 20.Which is the smallest: 0.382, 0.4, 0.094, 0.42? (a) 0.382 (b) 0.4 (c) 0.094 (d) 0.42
  21. 21.5.22 + 4.8 = ? (a) 10.02 (b) 10.12 (c) 9.92 (d) 5.7
  22. 22.What is the value of the digit 5 in 58.672? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  23. 23.Which is the greatest: 0.073, 0.758, 0.8, 0.88? (a) 0.073 (b) 0.758 (c) 0.8 (d) 0.88
  24. 24.1.01 + 3.6 = ? (a) 4.71 (b) 4.51 (c) 1.37 (d) 4.61
  25. 25.Which is the smallest: 0.45, 0.011, 0.393, 0.4? (a) 0.45 (b) 0.011 (c) 0.393 (d) 0.4
  26. 26.Which is the smallest: 0.6, 0.66, 0.016, 0.586? (a) 0.6 (b) 0.66 (c) 0.016 (d) 0.586
  27. 27.6.93 + 1.1 = ? (a) 7.93 (b) 8.03 (c) 7.04 (d) 8.13
  28. 28.What is the value of the digit 5 in 35.192? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  29. 29.What is the value of the digit 3 in 64.783? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  30. 30.5.25 + 5.1 = ? (a) 10.25 (b) 5.76 (c) 10.45 (d) 10.35
  31. 31.6.81 + 2.4 = ? (a) 9.21 (b) 7.05 (c) 9.11 (d) 9.31
  32. 32.9.81 + 3.7 = ? (a) 10.18 (b) 13.51 (c) 13.41 (d) 13.61
  33. 33.What is the value of the digit 8 in 68.521? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  34. 34.What is the value of the digit 2 in 12.359? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  35. 35.3.78 + 5.6 = ? (a) 9.38 (b) 4.34 (c) 9.48 (d) 9.28
  36. 36.Which is the smallest: 0.068, 0.88, 0.783, 0.8? (a) 0.068 (b) 0.88 (c) 0.783 (d) 0.8
  37. 37.3.91 + 8.3 = ? (a) 4.74 (b) 12.31 (c) 12.21 (d) 12.11
  38. 38.8.71 + 7.1 = ? (a) 15.81 (b) 15.91 (c) 15.71 (d) 9.42
  39. 39.What is the value of the digit 3 in 13.482? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  40. 40.4.85 + 2.9 = ? (a) 7.85 (b) 5.14 (c) 7.65 (d) 7.75

Answer key

  1. 0.083
  2. 12.89
  3. 0.69
  4. 0.2
  5. 10.74
  6. 0.31
  7. 16.34
  8. 1
  9. 11.64
  10. 0.055
  11. 6.71
  12. 14.01
  13. 4.01
  14. 14.51
  15. 7.27
  16. 0.35
  17. 80
  18. 6.75
  19. 0.71
  20. 0.094
  21. 10.02
  22. 50
  23. 0.88
  24. 4.61
  25. 0.011
  26. 0.016
  27. 8.03
  28. 5
  29. 0.003
  30. 10.35
  31. 9.21
  32. 13.51
  33. 8
  34. 2
  35. 9.38
  36. 0.068
  37. 12.21
  38. 15.81
  39. 3
  40. 7.75

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