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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 478 · 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 greatest: 0.269, 0.061, 0.39, 0.3? (a) 0.269 (b) 0.061 (c) 0.39 (d) 0.3
  2. 2.9.56 + 6.9 = ? (a) 16.46 (b) 16.36 (c) 10.25 (d) 16.56
  3. 3.What is the value of the digit 9 in 98.537? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  4. 4.Which is the greatest: 0.27, 0.168, 0.2, 0.046? (a) 0.27 (b) 0.168 (c) 0.2 (d) 0.046
  5. 5.Which is the greatest: 0.71, 0.644, 0.022, 0.7? (a) 0.71 (b) 0.644 (c) 0.022 (d) 0.7
  6. 6.Which is the smallest: 0.099, 0.68, 0.6, 0.598? (a) 0.099 (b) 0.68 (c) 0.6 (d) 0.598
  7. 7.8.91 + 8.2 = ? (a) 17.01 (b) 17.11 (c) 9.73 (d) 17.21
  8. 8.What is the value of the digit 2 in 25.938? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  9. 9.Which is the smallest: 0.3, 0.291, 0.34, 0.067? (a) 0.3 (b) 0.291 (c) 0.34 (d) 0.067
  10. 10.Which is the smallest: 0.229, 0.36, 0.024, 0.3? (a) 0.229 (b) 0.36 (c) 0.024 (d) 0.3
  11. 11.2.13 + 8.6 = ? (a) 10.63 (b) 10.73 (c) 2.99 (d) 10.83
  12. 12.8.81 + 7.8 = ? (a) 9.59 (b) 16.71 (c) 16.61 (d) 16.51
  13. 13.What is the value of the digit 5 in 54.618? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  14. 14.1.81 + 6.7 = ? (a) 2.48 (b) 8.61 (c) 8.51 (d) 8.41
  15. 15.4.31 + 5.3 = ? (a) 4.84 (b) 9.71 (c) 9.61 (d) 9.51
  16. 16.9.93 + 1.1 = ? (a) 10.93 (b) 11.13 (c) 11.03 (d) 10.04
  17. 17.What is the value of the digit 2 in 26.835? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  18. 18.5.51 + 5.7 = ? (a) 6.08 (b) 11.21 (c) 11.11 (d) 11.31
  19. 19.Which is the smallest: 0.7, 0.77, 0.024, 0.621? (a) 0.7 (b) 0.77 (c) 0.024 (d) 0.621
  20. 20.3.25 + 3.5 = ? (a) 6.85 (b) 6.75 (c) 6.65 (d) 3.6
  21. 21.4.99 + 2.4 = ? (a) 5.23 (b) 7.29 (c) 7.39 (d) 7.49
  22. 22.What is the value of the digit 2 in 36.827? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  23. 23.3.11 + 4.1 = ? (a) 7.31 (b) 3.52 (c) 7.21 (d) 7.11
  24. 24.7.57 + 3.3 = ? (a) 10.77 (b) 7.9 (c) 10.87 (d) 10.97
  25. 25.What is the value of the digit 2 in 76.215? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  26. 26.5.83 + 4.3 = ? (a) 6.26 (b) 10.13 (c) 10.03 (d) 10.23
  27. 27.1.25 + 1.3 = ? (a) 1.38 (b) 2.45 (c) 2.55 (d) 2.65
  28. 28.Which is the greatest: 0.089, 0.5, 0.56, 0.435? (a) 0.089 (b) 0.5 (c) 0.56 (d) 0.435
  29. 29.What is the value of the digit 1 in 23.517? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  30. 30.8.65 + 3.6 = ? (a) 12.35 (b) 9.01 (c) 12.25 (d) 12.15
  31. 31.What is the value of the digit 2 in 27.369? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  32. 32.Which is the greatest: 0.322, 0.4, 0.025, 0.48? (a) 0.322 (b) 0.4 (c) 0.025 (d) 0.48
  33. 33.What is the value of the digit 9 in 93.265? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  34. 34.9.46 + 7.9 = ? (a) 17.26 (b) 10.25 (c) 17.46 (d) 17.36
  35. 35.7.12 + 8.5 = ? (a) 7.97 (b) 15.52 (c) 15.72 (d) 15.62
  36. 36.What is the value of the digit 2 in 69.372? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  37. 37.Which is the greatest: 0.039, 0.45, 0.4, 0.312? (a) 0.039 (b) 0.45 (c) 0.4 (d) 0.312
  38. 38.What is the value of the digit 8 in 28.761? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  39. 39.Which is the greatest: 0.8, 0.747, 0.81, 0.093? (a) 0.8 (b) 0.747 (c) 0.81 (d) 0.093
  40. 40.Which is the greatest: 0.51, 0.017, 0.461, 0.5? (a) 0.51 (b) 0.017 (c) 0.461 (d) 0.5

Answer key

  1. 0.39
  2. 16.46
  3. 90
  4. 0.27
  5. 0.71
  6. 0.099
  7. 17.11
  8. 20
  9. 0.067
  10. 0.024
  11. 10.73
  12. 16.61
  13. 50
  14. 8.51
  15. 9.61
  16. 11.03
  17. 20
  18. 11.21
  19. 0.024
  20. 6.75
  21. 7.39
  22. 0.02
  23. 7.21
  24. 10.87
  25. 0.2
  26. 10.13
  27. 2.55
  28. 0.56
  29. 0.01
  30. 12.25
  31. 20
  32. 0.48
  33. 90
  34. 17.36
  35. 15.62
  36. 0.002
  37. 0.45
  38. 8
  39. 0.81
  40. 0.51

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