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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 419 · 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 2 in 32.561? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  2. 2.1.92 + 7.7 = ? (a) 9.52 (b) 9.62 (c) 2.69 (d) 9.72
  3. 3.What is the value of the digit 2 in 21.534? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  4. 4.What is the value of the digit 9 in 54.938? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  5. 5.Which is the greatest: 0.739, 0.88, 0.8, 0.069? (a) 0.739 (b) 0.88 (c) 0.8 (d) 0.069
  6. 6.Which is the smallest: 0.35, 0.3, 0.089, 0.239? (a) 0.35 (b) 0.3 (c) 0.089 (d) 0.239
  7. 7.Which is the smallest: 0.558, 0.63, 0.6, 0.049? (a) 0.558 (b) 0.63 (c) 0.6 (d) 0.049
  8. 8.Which is the greatest: 0.539, 0.68, 0.099, 0.6? (a) 0.539 (b) 0.68 (c) 0.099 (d) 0.6
  9. 9.7.93 + 5.3 = ? (a) 13.33 (b) 8.46 (c) 13.13 (d) 13.23
  10. 10.3.47 + 2.1 = ? (a) 5.67 (b) 3.68 (c) 5.57 (d) 5.47
  11. 11.9.11 + 7.1 = ? (a) 16.21 (b) 16.31 (c) 9.82 (d) 16.11
  12. 12.Which is the greatest: 0.077, 0.8, 0.719, 0.81? (a) 0.077 (b) 0.8 (c) 0.719 (d) 0.81
  13. 13.Which is the smallest: 0.385, 0.021, 0.4, 0.44? (a) 0.385 (b) 0.021 (c) 0.4 (d) 0.44
  14. 14.What is the value of the digit 1 in 68.417? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  15. 15.1.19 + 3.6 = ? (a) 4.69 (b) 1.55 (c) 4.89 (d) 4.79
  16. 16.3.38 + 6.4 = ? (a) 9.88 (b) 9.78 (c) 4.02 (d) 9.68
  17. 17.What is the value of the digit 5 in 42.965? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  18. 18.3.94 + 6.2 = ? (a) 10.24 (b) 10.04 (c) 10.14 (d) 4.56
  19. 19.Which is the greatest: 0.6, 0.076, 0.68, 0.518? (a) 0.6 (b) 0.076 (c) 0.68 (d) 0.518
  20. 20.5.93 + 1.7 = ? (a) 7.73 (b) 6.1 (c) 7.63 (d) 7.53
  21. 21.7.01 + 4.4 = ? (a) 11.31 (b) 11.51 (c) 11.41 (d) 7.45
  22. 22.What is the value of the digit 2 in 41.572? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  23. 23.Which is the smallest: 0.7, 0.032, 0.641, 0.79? (a) 0.7 (b) 0.032 (c) 0.641 (d) 0.79
  24. 24.What is the value of the digit 2 in 35.821? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  25. 25.6.52 + 4.2 = ? (a) 10.62 (b) 10.72 (c) 10.82 (d) 6.94
  26. 26.What is the value of the digit 6 in 62.819? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  27. 27.Which is the smallest: 0.671, 0.051, 0.75, 0.7? (a) 0.671 (b) 0.051 (c) 0.75 (d) 0.7
  28. 28.5.01 + 9.4 = ? (a) 14.51 (b) 5.95 (c) 14.31 (d) 14.41
  29. 29.5.01 + 5.2 = ? (a) 10.31 (b) 10.21 (c) 5.53 (d) 10.11
  30. 30.What is the value of the digit 2 in 29.587? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  31. 31.7.41 + 1.3 = ? (a) 8.61 (b) 8.81 (c) 7.54 (d) 8.71
  32. 32.6.04 + 8.1 = ? (a) 6.85 (b) 14.24 (c) 14.04 (d) 14.14
  33. 33.4.36 + 9.7 = ? (a) 5.33 (b) 14.16 (c) 14.06 (d) 13.96
  34. 34.Which is the greatest: 0.029, 0.84, 0.733, 0.8? (a) 0.029 (b) 0.84 (c) 0.733 (d) 0.8
  35. 35.4.01 + 4.3 = ? (a) 8.21 (b) 8.31 (c) 4.44 (d) 8.41
  36. 36.Which is the greatest: 0.81, 0.799, 0.018, 0.8? (a) 0.81 (b) 0.799 (c) 0.018 (d) 0.8
  37. 37.Which is the smallest: 0.077, 0.154, 0.2, 0.22? (a) 0.077 (b) 0.154 (c) 0.2 (d) 0.22
  38. 38.9.91 + 7.7 = ? (a) 17.51 (b) 17.61 (c) 10.68 (d) 17.71
  39. 39.What is the value of the digit 7 in 78.234? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  40. 40.What is the value of the digit 3 in 41.835? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3

Answer key

  1. 2
  2. 9.62
  3. 20
  4. 0.9
  5. 0.88
  6. 0.089
  7. 0.049
  8. 0.68
  9. 13.23
  10. 5.57
  11. 16.21
  12. 0.81
  13. 0.021
  14. 0.01
  15. 4.79
  16. 9.78
  17. 0.005
  18. 10.14
  19. 0.68
  20. 7.63
  21. 11.41
  22. 0.002
  23. 0.032
  24. 0.02
  25. 10.72
  26. 60
  27. 0.051
  28. 14.41
  29. 10.21
  30. 20
  31. 8.71
  32. 14.14
  33. 14.06
  34. 0.84
  35. 8.31
  36. 0.81
  37. 0.077
  38. 17.61
  39. 70
  40. 0.03

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