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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 810 · 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. 1.7.29 + 3.2 = ? (a) 10.49 (b) 10.59 (c) 7.61 (d) 10.39
  2. 2.What is the value of the digit 2 in 27.149? (a) 20 (b) 0.2 (c) 2 (d) 0.02
  3. 3.5.47 + 4.3 = ? (a) 9.77 (b) 9.87 (c) 9.67 (d) 5.9
  4. 4.Which is the greatest: 0.031, 0.25, 0.145, 0.2? (a) 0.031 (b) 0.25 (c) 0.145 (d) 0.2
  5. 5.Which is the smallest: 0.687, 0.7, 0.77, 0.029? (a) 0.687 (b) 0.7 (c) 0.77 (d) 0.029
  6. 6.Which is the greatest: 0.024, 0.118, 0.25, 0.2? (a) 0.024 (b) 0.118 (c) 0.25 (d) 0.2
  7. 7.What is the value of the digit 3 in 46.153? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  8. 8.3.37 + 9.2 = ? (a) 4.29 (b) 12.47 (c) 12.67 (d) 12.57
  9. 9.What is the value of the digit 6 in 64.197? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  10. 10.6.15 + 7.6 = ? (a) 6.91 (b) 13.75 (c) 13.65 (d) 13.85
  11. 11.Which is the smallest: 0.8, 0.099, 0.83, 0.712? (a) 0.8 (b) 0.099 (c) 0.83 (d) 0.712
  12. 12.Which is the greatest: 0.2, 0.164, 0.062, 0.23? (a) 0.2 (b) 0.164 (c) 0.062 (d) 0.23
  13. 13.4.47 + 6.2 = ? (a) 10.57 (b) 10.77 (c) 5.09 (d) 10.67
  14. 14.Which is the greatest: 0.488, 0.5, 0.091, 0.51? (a) 0.488 (b) 0.5 (c) 0.091 (d) 0.51
  15. 15.Which is the greatest: 0.481, 0.53, 0.074, 0.5? (a) 0.481 (b) 0.53 (c) 0.074 (d) 0.5
  16. 16.Which is the greatest: 0.063, 0.87, 0.8, 0.786? (a) 0.063 (b) 0.87 (c) 0.8 (d) 0.786
  17. 17.1.61 + 5.7 = ? (a) 7.41 (b) 7.21 (c) 2.18 (d) 7.31
  18. 18.4.09 + 5.1 = ? (a) 9.09 (b) 9.29 (c) 9.19 (d) 4.6
  19. 19.Which is the smallest: 0.69, 0.084, 0.573, 0.6? (a) 0.69 (b) 0.084 (c) 0.573 (d) 0.6
  20. 20.Which is the greatest: 0.3, 0.068, 0.219, 0.36? (a) 0.3 (b) 0.068 (c) 0.219 (d) 0.36
  21. 21.Which is the greatest: 0.078, 0.266, 0.32, 0.3? (a) 0.078 (b) 0.266 (c) 0.32 (d) 0.3
  22. 22.What is the value of the digit 3 in 14.735? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  23. 23.Which is the smallest: 0.697, 0.7, 0.016, 0.77? (a) 0.697 (b) 0.7 (c) 0.016 (d) 0.77
  24. 24.What is the value of the digit 3 in 18.563? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  25. 25.What is the value of the digit 8 in 21.876? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  26. 26.What is the value of the digit 5 in 12.586? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  27. 27.Which is the greatest: 0.5, 0.464, 0.056, 0.53? (a) 0.5 (b) 0.464 (c) 0.056 (d) 0.53
  28. 28.Which is the smallest: 0.538, 0.093, 0.6, 0.62? (a) 0.538 (b) 0.093 (c) 0.6 (d) 0.62
  29. 29.4.96 + 7.5 = ? (a) 12.56 (b) 12.36 (c) 5.71 (d) 12.46
  30. 30.What is the value of the digit 5 in 17.325? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  31. 31.7.33 + 2.7 = ? (a) 9.93 (b) 10.03 (c) 10.13 (d) 7.6
  32. 32.3.81 + 7.8 = ? (a) 11.51 (b) 11.71 (c) 4.59 (d) 11.61
  33. 33.What is the value of the digit 7 in 39.627? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  34. 34.Which is the greatest: 0.67, 0.075, 0.593, 0.6? (a) 0.67 (b) 0.075 (c) 0.593 (d) 0.6
  35. 35.What is the value of the digit 5 in 31.465? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  36. 36.2.73 + 7.6 = ? (a) 3.49 (b) 10.43 (c) 10.33 (d) 10.23
  37. 37.5.82 + 6.7 = ? (a) 12.62 (b) 12.42 (c) 12.52 (d) 6.49
  38. 38.Which is the greatest: 0.027, 0.8, 0.714, 0.83? (a) 0.027 (b) 0.8 (c) 0.714 (d) 0.83
  39. 39.What is the value of the digit 7 in 81.547? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  40. 40.3.35 + 2.7 = ? (a) 6.15 (b) 5.95 (c) 3.62 (d) 6.05

Answer key

  1. 10.49
  2. 20
  3. 9.77
  4. 0.25
  5. 0.029
  6. 0.25
  7. 0.003
  8. 12.57
  9. 60
  10. 13.75
  11. 0.099
  12. 0.23
  13. 10.67
  14. 0.51
  15. 0.53
  16. 0.87
  17. 7.31
  18. 9.19
  19. 0.084
  20. 0.36
  21. 0.32
  22. 0.03
  23. 0.016
  24. 0.003
  25. 0.8
  26. 0.5
  27. 0.53
  28. 0.093
  29. 12.46
  30. 0.005
  31. 10.03
  32. 11.61
  33. 0.007
  34. 0.67
  35. 0.005
  36. 10.33
  37. 12.52
  38. 0.83
  39. 0.007
  40. 6.05

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