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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 211 · 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.What is the value of the digit 4 in 34.256? (a) 0.04 (b) 40 (c) 4 (d) 0.4
  2. 2.6.89 + 3.4 = ? (a) 10.39 (b) 7.23 (c) 10.29 (d) 10.19
  3. 3.6.78 + 7.3 = ? (a) 7.51 (b) 14.08 (c) 14.18 (d) 13.98
  4. 4.Which is the smallest: 0.33, 0.3, 0.027, 0.236? (a) 0.33 (b) 0.3 (c) 0.027 (d) 0.236
  5. 5.4.09 + 6.4 = ? (a) 10.49 (b) 4.73 (c) 10.39 (d) 10.59
  6. 6.What is the value of the digit 9 in 82.139? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  7. 7.What is the value of the digit 6 in 19.436? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  8. 8.5.12 + 2.7 = ? (a) 7.92 (b) 5.39 (c) 7.72 (d) 7.82
  9. 9.What is the value of the digit 2 in 74.129? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  10. 10.6.29 + 8.8 = ? (a) 7.17 (b) 15.19 (c) 15.09 (d) 14.99
  11. 11.Which is the greatest: 0.228, 0.045, 0.39, 0.3? (a) 0.228 (b) 0.045 (c) 0.39 (d) 0.3
  12. 12.Which is the greatest: 0.4, 0.386, 0.43, 0.029? (a) 0.4 (b) 0.386 (c) 0.43 (d) 0.029
  13. 13.What is the value of the digit 1 in 24.158? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  14. 14.What is the value of the digit 4 in 82.496? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  15. 15.What is the value of the digit 1 in 91.572? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  16. 16.What is the value of the digit 3 in 34.918? (a) 0.03 (b) 0.3 (c) 30 (d) 3
  17. 17.5.11 + 4.7 = ? (a) 9.71 (b) 5.58 (c) 9.81 (d) 9.91
  18. 18.What is the value of the digit 4 in 32.468? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  19. 19.What is the value of the digit 8 in 15.836? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  20. 20.Which is the smallest: 0.078, 0.261, 0.3, 0.34? (a) 0.078 (b) 0.261 (c) 0.3 (d) 0.34
  21. 21.Which is the greatest: 0.736, 0.011, 0.83, 0.8? (a) 0.736 (b) 0.011 (c) 0.83 (d) 0.8
  22. 22.What is the value of the digit 9 in 56.978? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  23. 23.5.79 + 2.1 = ? (a) 7.89 (b) 7.79 (c) 6 (d) 7.99
  24. 24.What is the value of the digit 9 in 18.279? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  25. 25.Which is the smallest: 0.8, 0.082, 0.81, 0.711? (a) 0.8 (b) 0.082 (c) 0.81 (d) 0.711
  26. 26.3.67 + 5.5 = ? (a) 9.07 (b) 9.17 (c) 9.27 (d) 4.22
  27. 27.Which is the greatest: 0.141, 0.27, 0.016, 0.2? (a) 0.141 (b) 0.27 (c) 0.016 (d) 0.2
  28. 28.9.41 + 2.5 = ? (a) 11.91 (b) 11.81 (c) 9.66 (d) 12.01
  29. 29.6.56 + 5.8 = ? (a) 7.14 (b) 12.36 (c) 12.26 (d) 12.46
  30. 30.What is the value of the digit 2 in 39.241? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  31. 31.5.08 + 7.5 = ? (a) 12.48 (b) 12.58 (c) 12.68 (d) 5.83
  32. 32.What is the value of the digit 1 in 46.381? (a) 0.001 (b) 1 (c) 0.01 (d) 0.1
  33. 33.7.81 + 1.4 = ? (a) 7.95 (b) 9.21 (c) 9.31 (d) 9.11
  34. 34.What is the value of the digit 1 in 54.981? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  35. 35.Which is the greatest: 0.023, 0.8, 0.83, 0.777? (a) 0.023 (b) 0.8 (c) 0.83 (d) 0.777
  36. 36.7.15 + 2.7 = ? (a) 9.95 (b) 9.85 (c) 9.75 (d) 7.42
  37. 37.3.39 + 6.3 = ? (a) 4.02 (b) 9.79 (c) 9.59 (d) 9.69
  38. 38.Which is the smallest: 0.56, 0.053, 0.493, 0.5? (a) 0.56 (b) 0.053 (c) 0.493 (d) 0.5
  39. 39.7.01 + 5.9 = ? (a) 13.01 (b) 12.81 (c) 7.6 (d) 12.91
  40. 40.4.48 + 9.4 = ? (a) 13.78 (b) 13.88 (c) 5.42 (d) 13.98

Answer key

  1. 4
  2. 10.29
  3. 14.08
  4. 0.027
  5. 10.49
  6. 0.009
  7. 0.006
  8. 7.82
  9. 0.02
  10. 15.09
  11. 0.39
  12. 0.43
  13. 0.1
  14. 0.4
  15. 1
  16. 30
  17. 9.81
  18. 0.4
  19. 0.8
  20. 0.078
  21. 0.83
  22. 0.9
  23. 7.89
  24. 0.009
  25. 0.082
  26. 9.17
  27. 0.27
  28. 11.91
  29. 12.36
  30. 0.2
  31. 12.58
  32. 0.001
  33. 9.21
  34. 0.001
  35. 0.83
  36. 9.85
  37. 9.69
  38. 0.053
  39. 12.91
  40. 13.88

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