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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 596 · 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: 0.79, 0.689, 0.7, 0.051? (a) 0.79 (b) 0.689 (c) 0.7 (d) 0.051
  2. 2.Which is the greatest: 0.89, 0.061, 0.8, 0.784? (a) 0.89 (b) 0.061 (c) 0.8 (d) 0.784
  3. 3.8.27 + 8.2 = ? (a) 16.37 (b) 9.09 (c) 16.57 (d) 16.47
  4. 4.What is the value of the digit 6 in 25.469? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  5. 5.Which is the greatest: 0.517, 0.61, 0.6, 0.071? (a) 0.517 (b) 0.61 (c) 0.6 (d) 0.071
  6. 6.5.73 + 4.5 = ? (a) 10.33 (b) 10.23 (c) 10.13 (d) 6.18
  7. 7.Which is the smallest: 0.055, 0.5, 0.59, 0.492? (a) 0.055 (b) 0.5 (c) 0.59 (d) 0.492
  8. 8.1.87 + 7.4 = ? (a) 2.61 (b) 9.27 (c) 9.37 (d) 9.17
  9. 9.3.39 + 7.1 = ? (a) 10.49 (b) 10.39 (c) 10.59 (d) 4.1
  10. 10.5.38 + 7.6 = ? (a) 6.14 (b) 12.88 (c) 12.98 (d) 13.08
  11. 11.2.03 + 2.8 = ? (a) 4.83 (b) 2.31 (c) 4.73 (d) 4.93
  12. 12.4.39 + 7.5 = ? (a) 5.14 (b) 11.99 (c) 11.79 (d) 11.89
  13. 13.Which is the greatest: 0.374, 0.033, 0.42, 0.4? (a) 0.374 (b) 0.033 (c) 0.42 (d) 0.4
  14. 14.Which is the greatest: 0.78, 0.7, 0.063, 0.673? (a) 0.78 (b) 0.7 (c) 0.063 (d) 0.673
  15. 15.5.87 + 9.9 = ? (a) 15.77 (b) 15.87 (c) 15.67 (d) 6.86
  16. 16.Which is the smallest: 0.61, 0.517, 0.6, 0.092? (a) 0.61 (b) 0.517 (c) 0.6 (d) 0.092
  17. 17.What is the value of the digit 8 in 83.721? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  18. 18.What is the value of the digit 2 in 12.953? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  19. 19.Which is the smallest: 0.6, 0.048, 0.66, 0.539? (a) 0.6 (b) 0.048 (c) 0.66 (d) 0.539
  20. 20.What is the value of the digit 2 in 53.821? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  21. 21.Which is the greatest: 0.735, 0.82, 0.051, 0.8? (a) 0.735 (b) 0.82 (c) 0.051 (d) 0.8
  22. 22.Which is the greatest: 0.053, 0.763, 0.8, 0.85? (a) 0.053 (b) 0.763 (c) 0.8 (d) 0.85
  23. 23.7.74 + 4.1 = ? (a) 8.15 (b) 11.94 (c) 11.74 (d) 11.84
  24. 24.Which is the greatest: 0.611, 0.7, 0.055, 0.75? (a) 0.611 (b) 0.7 (c) 0.055 (d) 0.75
  25. 25.3.81 + 1.8 = ? (a) 5.71 (b) 3.99 (c) 5.61 (d) 5.51
  26. 26.Which is the greatest: 0.283, 0.3, 0.39, 0.092? (a) 0.283 (b) 0.3 (c) 0.39 (d) 0.092
  27. 27.3.11 + 9.4 = ? (a) 12.61 (b) 4.05 (c) 12.51 (d) 12.41
  28. 28.What is the value of the digit 7 in 75.619? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  29. 29.What is the value of the digit 2 in 95.274? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  30. 30.What is the value of the digit 1 in 53.917? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  31. 31.9.64 + 7.8 = ? (a) 10.42 (b) 17.44 (c) 17.34 (d) 17.54
  32. 32.Which is the smallest: 0.022, 0.73, 0.7, 0.668? (a) 0.022 (b) 0.73 (c) 0.7 (d) 0.668
  33. 33.What is the value of the digit 3 in 95.312? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  34. 34.Which is the greatest: 0.71, 0.077, 0.7, 0.638? (a) 0.71 (b) 0.077 (c) 0.7 (d) 0.638
  35. 35.What is the value of the digit 9 in 13.649? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  36. 36.8.75 + 7.7 = ? (a) 9.52 (b) 16.35 (c) 16.45 (d) 16.55
  37. 37.Which is the greatest: 0.2, 0.166, 0.029, 0.27? (a) 0.2 (b) 0.166 (c) 0.029 (d) 0.27
  38. 38.5.01 + 9.1 = ? (a) 14.11 (b) 14.21 (c) 5.92 (d) 14.01
  39. 39.Which is the smallest: 0.277, 0.34, 0.3, 0.064? (a) 0.277 (b) 0.34 (c) 0.3 (d) 0.064
  40. 40.4.82 + 4.1 = ? (a) 8.82 (b) 9.02 (c) 8.92 (d) 5.23

Answer key

  1. 0.79
  2. 0.89
  3. 16.47
  4. 0.06
  5. 0.61
  6. 10.23
  7. 0.055
  8. 9.27
  9. 10.49
  10. 12.98
  11. 4.83
  12. 11.89
  13. 0.42
  14. 0.78
  15. 15.77
  16. 0.092
  17. 80
  18. 2
  19. 0.048
  20. 0.02
  21. 0.82
  22. 0.85
  23. 11.84
  24. 0.75
  25. 5.61
  26. 0.39
  27. 12.51
  28. 70
  29. 0.2
  30. 0.01
  31. 17.44
  32. 0.022
  33. 0.3
  34. 0.71
  35. 0.009
  36. 16.45
  37. 0.27
  38. 14.11
  39. 0.064
  40. 8.92

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