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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 570 · 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.Which is the smallest: 0.097, 0.3, 0.31, 0.221? (a) 0.097 (b) 0.3 (c) 0.31 (d) 0.221
  2. 2.5.51 + 4.1 = ? (a) 5.92 (b) 9.71 (c) 9.61 (d) 9.51
  3. 3.2.61 + 7.9 = ? (a) 10.61 (b) 3.4 (c) 10.41 (d) 10.51
  4. 4.8.39 + 5.1 = ? (a) 13.39 (b) 8.9 (c) 13.49 (d) 13.59
  5. 5.Which is the smallest: 0.032, 0.591, 0.6, 0.62? (a) 0.032 (b) 0.591 (c) 0.6 (d) 0.62
  6. 6.Which is the greatest: 0.2, 0.016, 0.29, 0.164? (a) 0.2 (b) 0.016 (c) 0.29 (d) 0.164
  7. 7.Which is the greatest: 0.015, 0.61, 0.6, 0.523? (a) 0.015 (b) 0.61 (c) 0.6 (d) 0.523
  8. 8.7.19 + 2.1 = ? (a) 9.19 (b) 9.39 (c) 9.29 (d) 7.4
  9. 9.Which is the greatest: 0.069, 0.44, 0.4, 0.391? (a) 0.069 (b) 0.44 (c) 0.4 (d) 0.391
  10. 10.What is the value of the digit 1 in 17.259? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  11. 11.What is the value of the digit 1 in 14.257? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  12. 12.Which is the greatest: 0.38, 0.258, 0.022, 0.3? (a) 0.38 (b) 0.258 (c) 0.022 (d) 0.3
  13. 13.What is the value of the digit 1 in 16.247? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  14. 14.1.45 + 8.1 = ? (a) 9.65 (b) 9.55 (c) 2.26 (d) 9.45
  15. 15.Which is the smallest: 0.61, 0.6, 0.512, 0.018? (a) 0.61 (b) 0.6 (c) 0.512 (d) 0.018
  16. 16.What is the value of the digit 5 in 56.321? (a) 5 (b) 50 (c) 0.5 (d) 0.05
  17. 17.Which is the greatest: 0.093, 0.728, 0.8, 0.82? (a) 0.093 (b) 0.728 (c) 0.8 (d) 0.82
  18. 18.9.89 + 4.4 = ? (a) 14.29 (b) 10.33 (c) 14.39 (d) 14.19
  19. 19.1.96 + 8.7 = ? (a) 2.83 (b) 10.56 (c) 10.66 (d) 10.76
  20. 20.What is the value of the digit 3 in 36.582? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  21. 21.1.88 + 9.3 = ? (a) 11.08 (b) 11.18 (c) 11.28 (d) 2.81
  22. 22.8.14 + 6.4 = ? (a) 8.78 (b) 14.64 (c) 14.44 (d) 14.54
  23. 23.2.86 + 5.8 = ? (a) 8.76 (b) 8.56 (c) 8.66 (d) 3.44
  24. 24.2.91 + 9.3 = ? (a) 12.11 (b) 12.31 (c) 12.21 (d) 3.84
  25. 25.5.12 + 8.5 = ? (a) 13.72 (b) 13.62 (c) 13.52 (d) 5.97
  26. 26.3.92 + 1.9 = ? (a) 5.92 (b) 5.82 (c) 4.11 (d) 5.72
  27. 27.Which is the smallest: 0.055, 0.62, 0.6, 0.547? (a) 0.055 (b) 0.62 (c) 0.6 (d) 0.547
  28. 28.What is the value of the digit 8 in 57.628? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  29. 29.Which is the greatest: 0.148, 0.059, 0.25, 0.2? (a) 0.148 (b) 0.059 (c) 0.25 (d) 0.2
  30. 30.7.63 + 5.5 = ? (a) 13.03 (b) 13.23 (c) 8.18 (d) 13.13
  31. 31.3.81 + 9.1 = ? (a) 4.72 (b) 13.01 (c) 12.81 (d) 12.91
  32. 32.What is the value of the digit 6 in 27.196? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  33. 33.8.51 + 5.9 = ? (a) 14.51 (b) 14.41 (c) 9.1 (d) 14.31
  34. 34.Which is the greatest: 0.091, 0.34, 0.3, 0.285? (a) 0.091 (b) 0.34 (c) 0.3 (d) 0.285
  35. 35.Which is the smallest: 0.2, 0.169, 0.086, 0.27? (a) 0.2 (b) 0.169 (c) 0.086 (d) 0.27
  36. 36.Which is the greatest: 0.81, 0.725, 0.8, 0.023? (a) 0.81 (b) 0.725 (c) 0.8 (d) 0.023
  37. 37.4.61 + 7.1 = ? (a) 5.32 (b) 11.61 (c) 11.71 (d) 11.81
  38. 38.6.23 + 8.1 = ? (a) 7.04 (b) 14.43 (c) 14.23 (d) 14.33
  39. 39.9.26 + 3.1 = ? (a) 12.26 (b) 12.36 (c) 12.46 (d) 9.57
  40. 40.3.76 + 2.3 = ? (a) 6.06 (b) 6.16 (c) 5.96 (d) 3.99

Answer key

  1. 0.097
  2. 9.61
  3. 10.51
  4. 13.49
  5. 0.032
  6. 0.29
  7. 0.61
  8. 9.29
  9. 0.44
  10. 10
  11. 10
  12. 0.38
  13. 10
  14. 9.55
  15. 0.018
  16. 50
  17. 0.82
  18. 14.29
  19. 10.66
  20. 30
  21. 11.18
  22. 14.54
  23. 8.66
  24. 12.21
  25. 13.62
  26. 5.82
  27. 0.055
  28. 0.008
  29. 0.25
  30. 13.13
  31. 12.91
  32. 0.006
  33. 14.41
  34. 0.34
  35. 0.086
  36. 0.81
  37. 11.71
  38. 14.33
  39. 12.36
  40. 6.06

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