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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 403 · 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 5 in 47.523? (a) 0.05 (b) 5 (c) 0.005 (d) 0.5
  2. 2.What is the value of the digit 2 in 23.814? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  3. 3.Which is the smallest: 0.36, 0.036, 0.3, 0.255? (a) 0.36 (b) 0.036 (c) 0.3 (d) 0.255
  4. 4.5.21 + 3.6 = ? (a) 8.81 (b) 8.91 (c) 8.71 (d) 5.57
  5. 5.1.33 + 3.5 = ? (a) 1.68 (b) 4.93 (c) 4.83 (d) 4.73
  6. 6.Which is the greatest: 0.026, 0.3, 0.241, 0.31? (a) 0.026 (b) 0.3 (c) 0.241 (d) 0.31
  7. 7.Which is the greatest: 0.283, 0.35, 0.043, 0.3? (a) 0.283 (b) 0.35 (c) 0.043 (d) 0.3
  8. 8.Which is the greatest: 0.077, 0.34, 0.217, 0.3? (a) 0.077 (b) 0.34 (c) 0.217 (d) 0.3
  9. 9.8.11 + 5.6 = ? (a) 13.61 (b) 13.81 (c) 13.71 (d) 8.67
  10. 10.8.66 + 1.2 = ? (a) 9.76 (b) 9.96 (c) 8.78 (d) 9.86
  11. 11.Which is the smallest: 0.024, 0.3, 0.33, 0.215? (a) 0.024 (b) 0.3 (c) 0.33 (d) 0.215
  12. 12.Which is the greatest: 0.59, 0.089, 0.5, 0.422? (a) 0.59 (b) 0.089 (c) 0.5 (d) 0.422
  13. 13.Which is the greatest: 0.161, 0.096, 0.2, 0.29? (a) 0.161 (b) 0.096 (c) 0.2 (d) 0.29
  14. 14.Which is the greatest: 0.85, 0.767, 0.8, 0.063? (a) 0.85 (b) 0.767 (c) 0.8 (d) 0.063
  15. 15.What is the value of the digit 3 in 53.921? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  16. 16.7.61 + 6.4 = ? (a) 13.91 (b) 8.25 (c) 14.01 (d) 14.11
  17. 17.What is the value of the digit 2 in 39.712? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  18. 18.Which is the greatest: 0.021, 0.319, 0.4, 0.47? (a) 0.021 (b) 0.319 (c) 0.4 (d) 0.47
  19. 19.1.44 + 6.2 = ? (a) 7.74 (b) 7.64 (c) 7.54 (d) 2.06
  20. 20.Which is the smallest: 0.5, 0.57, 0.472, 0.095? (a) 0.5 (b) 0.57 (c) 0.472 (d) 0.095
  21. 21.9.25 + 9.5 = ? (a) 18.75 (b) 10.2 (c) 18.85 (d) 18.65
  22. 22.6.96 + 9.7 = ? (a) 16.56 (b) 16.76 (c) 7.93 (d) 16.66
  23. 23.What is the value of the digit 8 in 16.948? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  24. 24.Which is the greatest: 0.29, 0.092, 0.189, 0.2? (a) 0.29 (b) 0.092 (c) 0.189 (d) 0.2
  25. 25.1.58 + 9.1 = ? (a) 2.49 (b) 10.68 (c) 10.58 (d) 10.78
  26. 26.What is the value of the digit 5 in 49.157? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  27. 27.5.17 + 4.9 = ? (a) 5.66 (b) 9.97 (c) 10.07 (d) 10.17
  28. 28.What is the value of the digit 2 in 47.329? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  29. 29.2.92 + 1.8 = ? (a) 3.1 (b) 4.72 (c) 4.82 (d) 4.62
  30. 30.Which is the greatest: 0.3, 0.32, 0.261, 0.054? (a) 0.3 (b) 0.32 (c) 0.261 (d) 0.054
  31. 31.What is the value of the digit 9 in 52.987? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  32. 32.Which is the greatest: 0.73, 0.668, 0.023, 0.7? (a) 0.73 (b) 0.668 (c) 0.023 (d) 0.7
  33. 33.What is the value of the digit 1 in 16.923? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  34. 34.8.21 + 5.8 = ? (a) 14.01 (b) 8.79 (c) 14.11 (d) 13.91
  35. 35.6.24 + 1.5 = ? (a) 7.84 (b) 6.39 (c) 7.64 (d) 7.74
  36. 36.Which is the greatest: 0.2, 0.25, 0.122, 0.041? (a) 0.2 (b) 0.25 (c) 0.122 (d) 0.041
  37. 37.What is the value of the digit 3 in 65.234? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  38. 38.Which is the smallest: 0.768, 0.88, 0.8, 0.033? (a) 0.768 (b) 0.88 (c) 0.8 (d) 0.033
  39. 39.Which is the smallest: 0.097, 0.7, 0.618, 0.79? (a) 0.097 (b) 0.7 (c) 0.618 (d) 0.79
  40. 40.4.55 + 9.3 = ? (a) 13.85 (b) 13.95 (c) 5.48 (d) 13.75

Answer key

  1. 0.5
  2. 20
  3. 0.036
  4. 8.81
  5. 4.83
  6. 0.31
  7. 0.35
  8. 0.34
  9. 13.71
  10. 9.86
  11. 0.024
  12. 0.59
  13. 0.29
  14. 0.85
  15. 3
  16. 14.01
  17. 0.002
  18. 0.47
  19. 7.64
  20. 0.095
  21. 18.75
  22. 16.66
  23. 0.008
  24. 0.29
  25. 10.68
  26. 0.05
  27. 10.07
  28. 0.02
  29. 4.72
  30. 0.32
  31. 0.9
  32. 0.73
  33. 10
  34. 14.01
  35. 7.74
  36. 0.25
  37. 0.03
  38. 0.033
  39. 0.097
  40. 13.85

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