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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 8 · 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 31.756? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  2. 2.5.08 + 6.6 = ? (a) 5.74 (b) 11.78 (c) 11.58 (d) 11.68
  3. 3.Which is the greatest: 0.017, 0.72, 0.7, 0.665? (a) 0.017 (b) 0.72 (c) 0.7 (d) 0.665
  4. 4.8.29 + 4.3 = ? (a) 12.59 (b) 8.72 (c) 12.49 (d) 12.69
  5. 5.6.31 + 7.9 = ? (a) 7.1 (b) 14.31 (c) 14.21 (d) 14.11
  6. 6.1.41 + 4.1 = ? (a) 5.41 (b) 5.61 (c) 1.82 (d) 5.51
  7. 7.3.77 + 5.5 = ? (a) 9.37 (b) 4.32 (c) 9.27 (d) 9.17
  8. 8.What is the value of the digit 6 in 36.294? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  9. 9.What is the value of the digit 3 in 27.134? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  10. 10.5.53 + 6.3 = ? (a) 11.73 (b) 6.16 (c) 11.83 (d) 11.93
  11. 11.What is the value of the digit 1 in 42.791? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  12. 12.What is the value of the digit 3 in 34.679? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  13. 13.9.46 + 8.6 = ? (a) 18.06 (b) 18.16 (c) 17.96 (d) 10.32
  14. 14.Which is the greatest: 0.5, 0.58, 0.088, 0.429? (a) 0.5 (b) 0.58 (c) 0.088 (d) 0.429
  15. 15.What is the value of the digit 4 in 83.497? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  16. 16.3.06 + 2.1 = ? (a) 5.16 (b) 3.27 (c) 5.06 (d) 5.26
  17. 17.5.61 + 7.8 = ? (a) 6.39 (b) 13.31 (c) 13.41 (d) 13.51
  18. 18.1.03 + 3.7 = ? (a) 1.4 (b) 4.83 (c) 4.63 (d) 4.73
  19. 19.Which is the smallest: 0.632, 0.77, 0.042, 0.7? (a) 0.632 (b) 0.77 (c) 0.042 (d) 0.7
  20. 20.What is the value of the digit 8 in 87.691? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  21. 21.What is the value of the digit 4 in 54.237? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  22. 22.Which is the smallest: 0.7, 0.71, 0.092, 0.632? (a) 0.7 (b) 0.71 (c) 0.092 (d) 0.632
  23. 23.1.15 + 8.6 = ? (a) 2.01 (b) 9.75 (c) 9.85 (d) 9.65
  24. 24.What is the value of the digit 7 in 61.735? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  25. 25.What is the value of the digit 9 in 54.239? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  26. 26.5.93 + 4.1 = ? (a) 10.13 (b) 6.34 (c) 10.03 (d) 9.93
  27. 27.What is the value of the digit 1 in 34.521? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  28. 28.3.39 + 6.9 = ? (a) 10.39 (b) 4.08 (c) 10.19 (d) 10.29
  29. 29.8.66 + 9.4 = ? (a) 18.06 (b) 9.6 (c) 17.96 (d) 18.16
  30. 30.4.71 + 1.6 = ? (a) 6.21 (b) 4.87 (c) 6.31 (d) 6.41
  31. 31.Which is the smallest: 0.28, 0.071, 0.2, 0.165? (a) 0.28 (b) 0.071 (c) 0.2 (d) 0.165
  32. 32.4.57 + 9.8 = ? (a) 5.55 (b) 14.47 (c) 14.27 (d) 14.37
  33. 33.Which is the greatest: 0.559, 0.68, 0.076, 0.6? (a) 0.559 (b) 0.68 (c) 0.076 (d) 0.6
  34. 34.Which is the greatest: 0.4, 0.389, 0.095, 0.41? (a) 0.4 (b) 0.389 (c) 0.095 (d) 0.41
  35. 35.Which is the greatest: 0.014, 0.556, 0.69, 0.6? (a) 0.014 (b) 0.556 (c) 0.69 (d) 0.6
  36. 36.Which is the smallest: 0.063, 0.5, 0.59, 0.495? (a) 0.063 (b) 0.5 (c) 0.59 (d) 0.495
  37. 37.What is the value of the digit 7 in 85.237? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  38. 38.1.11 + 3.7 = ? (a) 4.81 (b) 1.48 (c) 4.71 (d) 4.91
  39. 39.Which is the smallest: 0.435, 0.5, 0.56, 0.071? (a) 0.435 (b) 0.5 (c) 0.56 (d) 0.071
  40. 40.What is the value of the digit 2 in 71.632? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02

Answer key

  1. 0.05
  2. 11.68
  3. 0.72
  4. 12.59
  5. 14.21
  6. 5.51
  7. 9.27
  8. 6
  9. 0.03
  10. 11.83
  11. 0.001
  12. 30
  13. 18.06
  14. 0.58
  15. 0.4
  16. 5.16
  17. 13.41
  18. 4.73
  19. 0.042
  20. 80
  21. 4
  22. 0.092
  23. 9.75
  24. 0.7
  25. 0.009
  26. 10.03
  27. 0.001
  28. 10.29
  29. 18.06
  30. 6.31
  31. 0.071
  32. 14.37
  33. 0.68
  34. 0.41
  35. 0.69
  36. 0.063
  37. 0.007
  38. 4.81
  39. 0.071
  40. 0.002

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