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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 752 · 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: 0.4, 0.074, 0.344, 0.42? (a) 0.4 (b) 0.074 (c) 0.344 (d) 0.42
  2. 2.7.43 + 6.4 = ? (a) 13.93 (b) 13.83 (c) 8.07 (d) 13.73
  3. 3.5.37 + 5.9 = ? (a) 11.27 (b) 5.96 (c) 11.17 (d) 11.37
  4. 4.Which is the greatest: 0.62, 0.522, 0.049, 0.6? (a) 0.62 (b) 0.522 (c) 0.049 (d) 0.6
  5. 5.What is the value of the digit 2 in 16.729? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  6. 6.4.75 + 5.6 = ? (a) 5.31 (b) 10.35 (c) 10.45 (d) 10.25
  7. 7.Which is the smallest: 0.71, 0.7, 0.645, 0.028? (a) 0.71 (b) 0.7 (c) 0.645 (d) 0.028
  8. 8.8.26 + 8.3 = ? (a) 16.46 (b) 9.09 (c) 16.66 (d) 16.56
  9. 9.2.79 + 6.8 = ? (a) 9.49 (b) 3.47 (c) 9.59 (d) 9.69
  10. 10.Which is the greatest: 0.2, 0.23, 0.163, 0.022? (a) 0.2 (b) 0.23 (c) 0.163 (d) 0.022
  11. 11.7.36 + 9.4 = ? (a) 8.3 (b) 16.76 (c) 16.86 (d) 16.66
  12. 12.3.56 + 7.7 = ? (a) 4.33 (b) 11.26 (c) 11.36 (d) 11.16
  13. 13.What is the value of the digit 2 in 52.483? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  14. 14.9.61 + 1.1 = ? (a) 10.61 (b) 10.71 (c) 10.81 (d) 9.72
  15. 15.8.98 + 3.1 = ? (a) 11.98 (b) 12.18 (c) 12.08 (d) 9.29
  16. 16.What is the value of the digit 3 in 63.759? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  17. 17.What is the value of the digit 9 in 89.425? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  18. 18.What is the value of the digit 2 in 46.291? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  19. 19.Which is the greatest: 0.83, 0.036, 0.739, 0.8? (a) 0.83 (b) 0.036 (c) 0.739 (d) 0.8
  20. 20.2.15 + 2.4 = ? (a) 4.65 (b) 4.45 (c) 4.55 (d) 2.39
  21. 21.Which is the smallest: 0.38, 0.3, 0.014, 0.292? (a) 0.38 (b) 0.3 (c) 0.014 (d) 0.292
  22. 22.What is the value of the digit 9 in 96.843? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  23. 23.6.31 + 2.6 = ? (a) 9.01 (b) 6.57 (c) 8.81 (d) 8.91
  24. 24.Which is the smallest: 0.094, 0.68, 0.521, 0.6? (a) 0.094 (b) 0.68 (c) 0.521 (d) 0.6
  25. 25.5.65 + 3.1 = ? (a) 5.96 (b) 8.65 (c) 8.75 (d) 8.85
  26. 26.What is the value of the digit 8 in 17.328? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  27. 27.Which is the greatest: 0.729, 0.83, 0.8, 0.017? (a) 0.729 (b) 0.83 (c) 0.8 (d) 0.017
  28. 28.9.09 + 3.4 = ? (a) 9.43 (b) 12.39 (c) 12.49 (d) 12.59
  29. 29.6.13 + 8.4 = ? (a) 14.53 (b) 14.43 (c) 6.97 (d) 14.63
  30. 30.Which is the greatest: 0.34, 0.3, 0.288, 0.022? (a) 0.34 (b) 0.3 (c) 0.288 (d) 0.022
  31. 31.Which is the greatest: 0.3, 0.095, 0.252, 0.31? (a) 0.3 (b) 0.095 (c) 0.252 (d) 0.31
  32. 32.Which is the smallest: 0.3, 0.35, 0.076, 0.236? (a) 0.3 (b) 0.35 (c) 0.076 (d) 0.236
  33. 33.Which is the greatest: 0.054, 0.479, 0.5, 0.54? (a) 0.054 (b) 0.479 (c) 0.5 (d) 0.54
  34. 34.2.71 + 7.6 = ? (a) 10.41 (b) 10.21 (c) 3.47 (d) 10.31
  35. 35.4.75 + 3.1 = ? (a) 7.75 (b) 7.95 (c) 5.06 (d) 7.85
  36. 36.7.56 + 1.7 = ? (a) 9.16 (b) 7.73 (c) 9.26 (d) 9.36
  37. 37.Which is the smallest: 0.056, 0.254, 0.31, 0.3? (a) 0.056 (b) 0.254 (c) 0.31 (d) 0.3
  38. 38.What is the value of the digit 2 in 52.471? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  39. 39.Which is the greatest: 0.5, 0.51, 0.035, 0.462? (a) 0.5 (b) 0.51 (c) 0.035 (d) 0.462
  40. 40.Which is the greatest: 0.5, 0.073, 0.465, 0.55? (a) 0.5 (b) 0.073 (c) 0.465 (d) 0.55

Answer key

  1. 0.42
  2. 13.83
  3. 11.27
  4. 0.62
  5. 0.02
  6. 10.35
  7. 0.028
  8. 16.56
  9. 9.59
  10. 0.23
  11. 16.76
  12. 11.26
  13. 2
  14. 10.71
  15. 12.08
  16. 3
  17. 9
  18. 0.2
  19. 0.83
  20. 4.55
  21. 0.014
  22. 90
  23. 8.91
  24. 0.094
  25. 8.75
  26. 0.008
  27. 0.83
  28. 12.49
  29. 14.53
  30. 0.34
  31. 0.31
  32. 0.076
  33. 0.54
  34. 10.31
  35. 7.85
  36. 9.26
  37. 0.056
  38. 2
  39. 0.51
  40. 0.55

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