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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 668 · 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. 1.4.66 + 9.2 = ? (a) 13.76 (b) 13.96 (c) 5.58 (d) 13.86
  2. 2.1.37 + 8.7 = ? (a) 2.24 (b) 10.17 (c) 9.97 (d) 10.07
  3. 3.9.81 + 9.4 = ? (a) 19.31 (b) 19.11 (c) 19.21 (d) 10.75
  4. 4.What is the value of the digit 8 in 37.684? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  5. 5.What is the value of the digit 6 in 19.564? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  6. 6.5.19 + 7.7 = ? (a) 12.99 (b) 5.96 (c) 12.79 (d) 12.89
  7. 7.Which is the greatest: 0.012, 0.68, 0.6, 0.562? (a) 0.012 (b) 0.68 (c) 0.6 (d) 0.562
  8. 8.3.82 + 8.9 = ? (a) 12.72 (b) 4.71 (c) 12.62 (d) 12.82
  9. 9.7.82 + 1.8 = ? (a) 9.52 (b) 9.62 (c) 9.72 (d) 8
  10. 10.Which is the smallest: 0.489, 0.51, 0.5, 0.056? (a) 0.489 (b) 0.51 (c) 0.5 (d) 0.056
  11. 11.9.01 + 6.2 = ? (a) 9.63 (b) 15.21 (c) 15.31 (d) 15.11
  12. 12.2.46 + 2.7 = ? (a) 5.16 (b) 5.26 (c) 5.06 (d) 2.73
  13. 13.Which is the smallest: 0.82, 0.792, 0.027, 0.8? (a) 0.82 (b) 0.792 (c) 0.027 (d) 0.8
  14. 14.Which is the greatest: 0.461, 0.5, 0.53, 0.065? (a) 0.461 (b) 0.5 (c) 0.53 (d) 0.065
  15. 15.What is the value of the digit 7 in 32.157? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  16. 16.What is the value of the digit 1 in 71.324? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  17. 17.Which is the greatest: 0.43, 0.034, 0.4, 0.371? (a) 0.43 (b) 0.034 (c) 0.4 (d) 0.371
  18. 18.What is the value of the digit 1 in 61.329? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  19. 19.Which is the greatest: 0.3, 0.35, 0.276, 0.012? (a) 0.3 (b) 0.35 (c) 0.276 (d) 0.012
  20. 20.What is the value of the digit 2 in 35.792? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  21. 21.9.54 + 8.9 = ? (a) 18.54 (b) 10.43 (c) 18.44 (d) 18.34
  22. 22.Which is the smallest: 0.76, 0.016, 0.7, 0.681? (a) 0.76 (b) 0.016 (c) 0.7 (d) 0.681
  23. 23.Which is the smallest: 0.3, 0.298, 0.36, 0.086? (a) 0.3 (b) 0.298 (c) 0.36 (d) 0.086
  24. 24.7.89 + 1.6 = ? (a) 9.49 (b) 9.39 (c) 8.05 (d) 9.59
  25. 25.What is the value of the digit 8 in 91.862? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  26. 26.What is the value of the digit 1 in 18.569? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  27. 27.2.32 + 3.3 = ? (a) 5.52 (b) 2.65 (c) 5.62 (d) 5.72
  28. 28.6.71 + 8.9 = ? (a) 7.6 (b) 15.61 (c) 15.51 (d) 15.71
  29. 29.8.58 + 3.6 = ? (a) 12.08 (b) 12.28 (c) 8.94 (d) 12.18
  30. 30.Which is the smallest: 0.055, 0.8, 0.83, 0.719? (a) 0.055 (b) 0.8 (c) 0.83 (d) 0.719
  31. 31.What is the value of the digit 9 in 57.981? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  32. 32.Which is the smallest: 0.7, 0.015, 0.621, 0.72? (a) 0.7 (b) 0.015 (c) 0.621 (d) 0.72
  33. 33.2.45 + 3.6 = ? (a) 5.95 (b) 2.81 (c) 6.05 (d) 6.15
  34. 34.What is the value of the digit 3 in 13.957? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  35. 35.4.83 + 8.1 = ? (a) 5.64 (b) 13.03 (c) 12.93 (d) 12.83
  36. 36.7.71 + 3.4 = ? (a) 11.01 (b) 8.05 (c) 11.11 (d) 11.21
  37. 37.Which is the smallest: 0.248, 0.34, 0.3, 0.066? (a) 0.248 (b) 0.34 (c) 0.3 (d) 0.066
  38. 38.What is the value of the digit 4 in 24.931? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  39. 39.What is the value of the digit 1 in 52.861? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  40. 40.What is the value of the digit 5 in 94.765? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5

Answer key

  1. 13.86
  2. 10.07
  3. 19.21
  4. 0.08
  5. 0.06
  6. 12.89
  7. 0.68
  8. 12.72
  9. 9.62
  10. 0.056
  11. 15.21
  12. 5.16
  13. 0.027
  14. 0.53
  15. 0.007
  16. 1
  17. 0.43
  18. 1
  19. 0.35
  20. 0.002
  21. 18.44
  22. 0.016
  23. 0.086
  24. 9.49
  25. 0.8
  26. 10
  27. 5.62
  28. 15.61
  29. 12.18
  30. 0.055
  31. 0.9
  32. 0.015
  33. 6.05
  34. 3
  35. 12.93
  36. 11.11
  37. 0.066
  38. 4
  39. 0.001
  40. 0.005

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