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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 366 · 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. 1.6.28 + 5.9 = ? (a) 12.28 (b) 6.87 (c) 12.08 (d) 12.18
  2. 2.Which is the smallest: 0.8, 0.745, 0.075, 0.89? (a) 0.8 (b) 0.745 (c) 0.075 (d) 0.89
  3. 3.9.68 + 6.3 = ? (a) 16.08 (b) 15.98 (c) 10.31 (d) 15.88
  4. 4.4.15 + 2.5 = ? (a) 6.75 (b) 4.4 (c) 6.55 (d) 6.65
  5. 5.Which is the smallest: 0.76, 0.066, 0.7, 0.678? (a) 0.76 (b) 0.066 (c) 0.7 (d) 0.678
  6. 6.What is the value of the digit 9 in 23.891? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  7. 7.2.44 + 5.9 = ? (a) 8.44 (b) 8.34 (c) 3.03 (d) 8.24
  8. 8.2.25 + 7.5 = ? (a) 9.75 (b) 9.85 (c) 9.65 (d) 3
  9. 9.5.37 + 6.1 = ? (a) 5.98 (b) 11.37 (c) 11.57 (d) 11.47
  10. 10.What is the value of the digit 5 in 65.194? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  11. 11.6.18 + 9.3 = ? (a) 7.11 (b) 15.38 (c) 15.58 (d) 15.48
  12. 12.Which is the greatest: 0.58, 0.417, 0.5, 0.087? (a) 0.58 (b) 0.417 (c) 0.5 (d) 0.087
  13. 13.Which is the smallest: 0.086, 0.2, 0.27, 0.116? (a) 0.086 (b) 0.2 (c) 0.27 (d) 0.116
  14. 14.Which is the smallest: 0.037, 0.171, 0.2, 0.25? (a) 0.037 (b) 0.171 (c) 0.2 (d) 0.25
  15. 15.9.52 + 1.3 = ? (a) 10.72 (b) 9.65 (c) 10.82 (d) 10.92
  16. 16.What is the value of the digit 7 in 78.219? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  17. 17.Which is the greatest: 0.613, 0.71, 0.014, 0.7? (a) 0.613 (b) 0.71 (c) 0.014 (d) 0.7
  18. 18.4.16 + 6.7 = ? (a) 10.76 (b) 10.86 (c) 4.83 (d) 10.96
  19. 19.4.58 + 9.5 = ? (a) 14.18 (b) 5.53 (c) 13.98 (d) 14.08
  20. 20.Which is the greatest: 0.86, 0.043, 0.8, 0.758? (a) 0.86 (b) 0.043 (c) 0.8 (d) 0.758
  21. 21.9.93 + 3.3 = ? (a) 13.23 (b) 13.33 (c) 13.13 (d) 10.26
  22. 22.1.11 + 5.1 = ? (a) 6.21 (b) 1.62 (c) 6.11 (d) 6.31
  23. 23.8.62 + 9.7 = ? (a) 18.42 (b) 18.32 (c) 18.22 (d) 9.59
  24. 24.Which is the greatest: 0.36, 0.049, 0.3, 0.282? (a) 0.36 (b) 0.049 (c) 0.3 (d) 0.282
  25. 25.Which is the greatest: 0.326, 0.4, 0.45, 0.048? (a) 0.326 (b) 0.4 (c) 0.45 (d) 0.048
  26. 26.What is the value of the digit 8 in 64.782? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  27. 27.Which is the smallest: 0.29, 0.2, 0.117, 0.063? (a) 0.29 (b) 0.2 (c) 0.117 (d) 0.063
  28. 28.What is the value of the digit 6 in 69.714? (a) 60 (b) 0.06 (c) 6 (d) 0.6
  29. 29.Which is the greatest: 0.576, 0.014, 0.68, 0.6? (a) 0.576 (b) 0.014 (c) 0.68 (d) 0.6
  30. 30.What is the value of the digit 5 in 81.536? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  31. 31.Which is the greatest: 0.23, 0.017, 0.147, 0.2? (a) 0.23 (b) 0.017 (c) 0.147 (d) 0.2
  32. 32.8.51 + 9.7 = ? (a) 18.21 (b) 9.48 (c) 18.31 (d) 18.11
  33. 33.8.05 + 1.5 = ? (a) 9.45 (b) 8.2 (c) 9.65 (d) 9.55
  34. 34.3.67 + 1.4 = ? (a) 4.97 (b) 3.81 (c) 5.07 (d) 5.17
  35. 35.8.68 + 6.1 = ? (a) 14.68 (b) 9.29 (c) 14.78 (d) 14.88
  36. 36.6.84 + 7.1 = ? (a) 13.84 (b) 13.94 (c) 7.55 (d) 14.04
  37. 37.What is the value of the digit 6 in 93.268? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  38. 38.1.99 + 4.5 = ? (a) 6.59 (b) 6.49 (c) 2.44 (d) 6.39
  39. 39.What is the value of the digit 9 in 97.382? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  40. 40.7.49 + 6.2 = ? (a) 13.59 (b) 13.79 (c) 8.11 (d) 13.69

Answer key

  1. 12.18
  2. 0.075
  3. 15.98
  4. 6.65
  5. 0.066
  6. 0.09
  7. 8.34
  8. 9.75
  9. 11.47
  10. 5
  11. 15.48
  12. 0.58
  13. 0.086
  14. 0.037
  15. 10.82
  16. 70
  17. 0.71
  18. 10.86
  19. 14.08
  20. 0.86
  21. 13.23
  22. 6.21
  23. 18.32
  24. 0.36
  25. 0.45
  26. 0.08
  27. 0.063
  28. 60
  29. 0.68
  30. 0.5
  31. 0.23
  32. 18.21
  33. 9.55
  34. 5.07
  35. 14.78
  36. 13.94
  37. 0.06
  38. 6.49
  39. 90
  40. 13.69

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