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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 656 · 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. 1.7.38 + 4.7 = ? (a) 7.85 (b) 12.18 (c) 12.08 (d) 11.98
  2. 2.1.63 + 2.3 = ? (a) 4.03 (b) 3.83 (c) 3.93 (d) 1.86
  3. 3.Which is the greatest: 0.26, 0.062, 0.2, 0.131? (a) 0.26 (b) 0.062 (c) 0.2 (d) 0.131
  4. 4.3.58 + 5.8 = ? (a) 9.28 (b) 9.48 (c) 4.16 (d) 9.38
  5. 5.9.43 + 5.1 = ? (a) 9.94 (b) 14.43 (c) 14.53 (d) 14.63
  6. 6.What is the value of the digit 1 in 49.871? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  7. 7.What is the value of the digit 9 in 92.648? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  8. 8.Which is the smallest: 0.4, 0.395, 0.41, 0.093? (a) 0.4 (b) 0.395 (c) 0.41 (d) 0.093
  9. 9.What is the value of the digit 3 in 39.641? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  10. 10.6.45 + 3.4 = ? (a) 9.85 (b) 9.75 (c) 6.79 (d) 9.95
  11. 11.Which is the greatest: 0.81, 0.8, 0.067, 0.736? (a) 0.81 (b) 0.8 (c) 0.067 (d) 0.736
  12. 12.Which is the greatest: 0.032, 0.216, 0.3, 0.37? (a) 0.032 (b) 0.216 (c) 0.3 (d) 0.37
  13. 13.1.66 + 8.5 = ? (a) 10.26 (b) 10.06 (c) 2.51 (d) 10.16
  14. 14.1.51 + 3.1 = ? (a) 4.51 (b) 4.71 (c) 4.61 (d) 1.82
  15. 15.What is the value of the digit 8 in 58.721? (a) 80 (b) 0.8 (c) 8 (d) 0.08
  16. 16.8.09 + 7.9 = ? (a) 15.99 (b) 15.89 (c) 8.88 (d) 16.09
  17. 17.What is the value of the digit 4 in 43.728? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  18. 18.4.41 + 9.3 = ? (a) 13.81 (b) 5.34 (c) 13.71 (d) 13.61
  19. 19.What is the value of the digit 5 in 59.718? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  20. 20.What is the value of the digit 3 in 37.261? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  21. 21.Which is the smallest: 0.7, 0.75, 0.058, 0.677? (a) 0.7 (b) 0.75 (c) 0.058 (d) 0.677
  22. 22.Which is the greatest: 0.367, 0.48, 0.072, 0.4? (a) 0.367 (b) 0.48 (c) 0.072 (d) 0.4
  23. 23.What is the value of the digit 3 in 81.634? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  24. 24.6.28 + 5.6 = ? (a) 11.78 (b) 11.88 (c) 11.98 (d) 6.84
  25. 25.What is the value of the digit 1 in 34.158? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  26. 26.5.22 + 4.3 = ? (a) 9.42 (b) 9.52 (c) 9.62 (d) 5.65
  27. 27.5.12 + 6.5 = ? (a) 11.52 (b) 11.72 (c) 5.77 (d) 11.62
  28. 28.What is the value of the digit 1 in 52.618? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  29. 29.2.99 + 3.1 = ? (a) 6.09 (b) 5.99 (c) 6.19 (d) 3.3
  30. 30.What is the value of the digit 8 in 57.283? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  31. 31.What is the value of the digit 2 in 94.652? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  32. 32.Which is the smallest: 0.4, 0.321, 0.45, 0.065? (a) 0.4 (b) 0.321 (c) 0.45 (d) 0.065
  33. 33.Which is the greatest: 0.016, 0.7, 0.79, 0.699? (a) 0.016 (b) 0.7 (c) 0.79 (d) 0.699
  34. 34.1.45 + 6.2 = ? (a) 7.55 (b) 2.07 (c) 7.75 (d) 7.65
  35. 35.2.91 + 6.1 = ? (a) 8.91 (b) 9.01 (c) 9.11 (d) 3.52
  36. 36.2.72 + 6.6 = ? (a) 3.38 (b) 9.42 (c) 9.22 (d) 9.32
  37. 37.What is the value of the digit 2 in 51.428? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  38. 38.Which is the smallest: 0.8, 0.85, 0.747, 0.014? (a) 0.8 (b) 0.85 (c) 0.747 (d) 0.014
  39. 39.Which is the smallest: 0.421, 0.5, 0.053, 0.55? (a) 0.421 (b) 0.5 (c) 0.053 (d) 0.55
  40. 40.7.45 + 5.5 = ? (a) 12.85 (b) 13.05 (c) 8 (d) 12.95

Answer key

  1. 12.08
  2. 3.93
  3. 0.26
  4. 9.38
  5. 14.53
  6. 0.001
  7. 90
  8. 0.093
  9. 30
  10. 9.85
  11. 0.81
  12. 0.37
  13. 10.16
  14. 4.61
  15. 8
  16. 15.99
  17. 40
  18. 13.71
  19. 50
  20. 30
  21. 0.058
  22. 0.48
  23. 0.03
  24. 11.88
  25. 0.1
  26. 9.52
  27. 11.62
  28. 0.01
  29. 6.09
  30. 0.08
  31. 0.002
  32. 0.065
  33. 0.79
  34. 7.65
  35. 9.01
  36. 9.32
  37. 0.02
  38. 0.014
  39. 0.053
  40. 12.95

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