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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 526 · 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. 1.1.77 + 3.3 = ? (a) 5.17 (b) 2.1 (c) 4.97 (d) 5.07
  2. 2.8.65 + 6.1 = ? (a) 9.26 (b) 14.65 (c) 14.75 (d) 14.85
  3. 3.Which is the smallest: 0.198, 0.26, 0.2, 0.017? (a) 0.198 (b) 0.26 (c) 0.2 (d) 0.017
  4. 4.What is the value of the digit 9 in 97.413? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  5. 5.4.78 + 7.8 = ? (a) 12.68 (b) 12.58 (c) 5.56 (d) 12.48
  6. 6.Which is the greatest: 0.89, 0.084, 0.8, 0.768? (a) 0.89 (b) 0.084 (c) 0.8 (d) 0.768
  7. 7.What is the value of the digit 9 in 97.351? (a) 9 (b) 90 (c) 0.09 (d) 0.9
  8. 8.1.57 + 8.2 = ? (a) 9.87 (b) 2.39 (c) 9.67 (d) 9.77
  9. 9.What is the value of the digit 4 in 94.381? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  10. 10.Which is the greatest: 0.571, 0.65, 0.6, 0.052? (a) 0.571 (b) 0.65 (c) 0.6 (d) 0.052
  11. 11.Which is the greatest: 0.26, 0.084, 0.113, 0.2? (a) 0.26 (b) 0.084 (c) 0.113 (d) 0.2
  12. 12.What is the value of the digit 3 in 53.276? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  13. 13.Which is the greatest: 0.48, 0.385, 0.083, 0.4? (a) 0.48 (b) 0.385 (c) 0.083 (d) 0.4
  14. 14.Which is the greatest: 0.7, 0.678, 0.78, 0.011? (a) 0.7 (b) 0.678 (c) 0.78 (d) 0.011
  15. 15.Which is the smallest: 0.712, 0.86, 0.8, 0.046? (a) 0.712 (b) 0.86 (c) 0.8 (d) 0.046
  16. 16.4.01 + 4.6 = ? (a) 8.71 (b) 8.61 (c) 4.47 (d) 8.51
  17. 17.7.22 + 1.2 = ? (a) 7.34 (b) 8.52 (c) 8.32 (d) 8.42
  18. 18.4.47 + 2.4 = ? (a) 6.97 (b) 6.87 (c) 6.77 (d) 4.71
  19. 19.Which is the greatest: 0.47, 0.4, 0.058, 0.368? (a) 0.47 (b) 0.4 (c) 0.058 (d) 0.368
  20. 20.2.01 + 7.4 = ? (a) 9.31 (b) 9.41 (c) 2.75 (d) 9.51
  21. 21.What is the value of the digit 1 in 56.217? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  22. 22.7.91 + 4.1 = ? (a) 11.91 (b) 8.32 (c) 12.11 (d) 12.01
  23. 23.1.59 + 7.3 = ? (a) 8.99 (b) 2.32 (c) 8.79 (d) 8.89
  24. 24.9.67 + 3.8 = ? (a) 13.37 (b) 10.05 (c) 13.47 (d) 13.57
  25. 25.What is the value of the digit 6 in 56.714? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  26. 26.Which is the smallest: 0.33, 0.238, 0.017, 0.3? (a) 0.33 (b) 0.238 (c) 0.017 (d) 0.3
  27. 27.9.61 + 8.6 = ? (a) 18.31 (b) 18.11 (c) 10.47 (d) 18.21
  28. 28.2.14 + 9.8 = ? (a) 11.94 (b) 3.12 (c) 11.84 (d) 12.04
  29. 29.Which is the greatest: 0.226, 0.38, 0.3, 0.069? (a) 0.226 (b) 0.38 (c) 0.3 (d) 0.069
  30. 30.3.63 + 7.1 = ? (a) 10.73 (b) 10.63 (c) 10.83 (d) 4.34
  31. 31.What is the value of the digit 9 in 91.843? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  32. 32.5.71 + 3.4 = ? (a) 9.11 (b) 9.01 (c) 9.21 (d) 6.05
  33. 33.What is the value of the digit 3 in 14.386? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  34. 34.Which is the smallest: 0.3, 0.063, 0.257, 0.38? (a) 0.3 (b) 0.063 (c) 0.257 (d) 0.38
  35. 35.What is the value of the digit 2 in 42.619? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  36. 36.What is the value of the digit 4 in 73.428? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  37. 37.What is the value of the digit 7 in 18.573? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  38. 38.What is the value of the digit 5 in 36.845? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  39. 39.Which is the smallest: 0.676, 0.7, 0.73, 0.049? (a) 0.676 (b) 0.7 (c) 0.73 (d) 0.049
  40. 40.4.01 + 2.6 = ? (a) 6.61 (b) 6.51 (c) 6.71 (d) 4.27

Answer key

  1. 5.07
  2. 14.75
  3. 0.017
  4. 90
  5. 12.58
  6. 0.89
  7. 90
  8. 9.77
  9. 4
  10. 0.65
  11. 0.26
  12. 3
  13. 0.48
  14. 0.78
  15. 0.046
  16. 8.61
  17. 8.42
  18. 6.87
  19. 0.47
  20. 9.41
  21. 0.01
  22. 12.01
  23. 8.89
  24. 13.47
  25. 6
  26. 0.017
  27. 18.21
  28. 11.94
  29. 0.38
  30. 10.73
  31. 90
  32. 9.11
  33. 0.3
  34. 0.063
  35. 2
  36. 0.4
  37. 0.07
  38. 0.005
  39. 0.049
  40. 6.61

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