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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 11 · 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. 1.9.18 + 4.5 = ? (a) 13.78 (b) 9.63 (c) 13.58 (d) 13.68
  2. 2.What is the value of the digit 7 in 75.924? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  3. 3.Which is the smallest: 0.34, 0.011, 0.238, 0.3? (a) 0.34 (b) 0.011 (c) 0.238 (d) 0.3
  4. 4.3.55 + 9.5 = ? (a) 4.5 (b) 13.15 (c) 12.95 (d) 13.05
  5. 5.Which is the smallest: 0.421, 0.086, 0.58, 0.5? (a) 0.421 (b) 0.086 (c) 0.58 (d) 0.5
  6. 6.Which is the greatest: 0.63, 0.061, 0.537, 0.6? (a) 0.63 (b) 0.061 (c) 0.537 (d) 0.6
  7. 7.2.62 + 1.9 = ? (a) 2.81 (b) 4.52 (c) 4.42 (d) 4.62
  8. 8.What is the value of the digit 9 in 64.985? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  9. 9.Which is the smallest: 0.027, 0.3, 0.33, 0.243? (a) 0.027 (b) 0.3 (c) 0.33 (d) 0.243
  10. 10.What is the value of the digit 3 in 89.342? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  11. 11.Which is the greatest: 0.3, 0.056, 0.37, 0.232? (a) 0.3 (b) 0.056 (c) 0.37 (d) 0.232
  12. 12.Which is the smallest: 0.2, 0.184, 0.26, 0.031? (a) 0.2 (b) 0.184 (c) 0.26 (d) 0.031
  13. 13.9.59 + 5.3 = ? (a) 10.12 (b) 14.79 (c) 14.99 (d) 14.89
  14. 14.What is the value of the digit 3 in 35.169? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  15. 15.7.92 + 8.3 = ? (a) 16.12 (b) 8.75 (c) 16.22 (d) 16.32
  16. 16.What is the value of the digit 8 in 84.321? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  17. 17.2.99 + 5.5 = ? (a) 3.54 (b) 8.39 (c) 8.59 (d) 8.49
  18. 18.What is the value of the digit 2 in 29.683? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  19. 19.What is the value of the digit 1 in 19.483? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  20. 20.Which is the smallest: 0.491, 0.5, 0.58, 0.052? (a) 0.491 (b) 0.5 (c) 0.58 (d) 0.052
  21. 21.Which is the greatest: 0.7, 0.71, 0.664, 0.091? (a) 0.7 (b) 0.71 (c) 0.664 (d) 0.091
  22. 22.9.17 + 2.8 = ? (a) 12.07 (b) 9.45 (c) 11.87 (d) 11.97
  23. 23.Which is the smallest: 0.4, 0.41, 0.038, 0.316? (a) 0.4 (b) 0.41 (c) 0.038 (d) 0.316
  24. 24.Which is the smallest: 0.62, 0.534, 0.092, 0.6? (a) 0.62 (b) 0.534 (c) 0.092 (d) 0.6
  25. 25.Which is the smallest: 0.467, 0.52, 0.029, 0.5? (a) 0.467 (b) 0.52 (c) 0.029 (d) 0.5
  26. 26.What is the value of the digit 2 in 82.534? (a) 2 (b) 0.2 (c) 0.02 (d) 20
  27. 27.What is the value of the digit 4 in 56.421? (a) 0.004 (b) 4 (c) 0.04 (d) 0.4
  28. 28.Which is the greatest: 0.5, 0.51, 0.486, 0.036? (a) 0.5 (b) 0.51 (c) 0.486 (d) 0.036
  29. 29.What is the value of the digit 3 in 26.483? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  30. 30.Which is the greatest: 0.096, 0.8, 0.81, 0.755? (a) 0.096 (b) 0.8 (c) 0.81 (d) 0.755
  31. 31.What is the value of the digit 6 in 31.564? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  32. 32.What is the value of the digit 3 in 34.126? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  33. 33.Which is the greatest: 0.4, 0.099, 0.47, 0.324? (a) 0.4 (b) 0.099 (c) 0.47 (d) 0.324
  34. 34.Which is the smallest: 0.5, 0.419, 0.074, 0.54? (a) 0.5 (b) 0.419 (c) 0.074 (d) 0.54
  35. 35.6.52 + 5.5 = ? (a) 12.12 (b) 12.02 (c) 7.07 (d) 11.92
  36. 36.Which is the greatest: 0.648, 0.71, 0.022, 0.7? (a) 0.648 (b) 0.71 (c) 0.022 (d) 0.7
  37. 37.Which is the greatest: 0.433, 0.5, 0.53, 0.095? (a) 0.433 (b) 0.5 (c) 0.53 (d) 0.095
  38. 38.3.71 + 5.1 = ? (a) 8.91 (b) 4.22 (c) 8.81 (d) 8.71
  39. 39.Which is the greatest: 0.018, 0.619, 0.78, 0.7? (a) 0.018 (b) 0.619 (c) 0.78 (d) 0.7
  40. 40.Which is the greatest: 0.426, 0.5, 0.51, 0.099? (a) 0.426 (b) 0.5 (c) 0.51 (d) 0.099

Answer key

  1. 13.68
  2. 70
  3. 0.011
  4. 13.05
  5. 0.086
  6. 0.63
  7. 4.52
  8. 0.9
  9. 0.027
  10. 0.3
  11. 0.37
  12. 0.031
  13. 14.89
  14. 30
  15. 16.22
  16. 80
  17. 8.49
  18. 20
  19. 10
  20. 0.052
  21. 0.71
  22. 11.97
  23. 0.038
  24. 0.092
  25. 0.029
  26. 2
  27. 0.4
  28. 0.51
  29. 0.003
  30. 0.81
  31. 0.06
  32. 30
  33. 0.47
  34. 0.074
  35. 12.02
  36. 0.71
  37. 0.53
  38. 8.81
  39. 0.78
  40. 0.51

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