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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 590 · 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: 0.661, 0.77, 0.7, 0.013? (a) 0.661 (b) 0.77 (c) 0.7 (d) 0.013
  2. 2.Which is the smallest: 0.024, 0.45, 0.4, 0.392? (a) 0.024 (b) 0.45 (c) 0.4 (d) 0.392
  3. 3.Which is the greatest: 0.094, 0.297, 0.37, 0.3? (a) 0.094 (b) 0.297 (c) 0.37 (d) 0.3
  4. 4.2.99 + 1.6 = ? (a) 4.69 (b) 4.59 (c) 4.49 (d) 3.15
  5. 5.Which is the greatest: 0.628, 0.031, 0.76, 0.7? (a) 0.628 (b) 0.031 (c) 0.76 (d) 0.7
  6. 6.8.88 + 8.5 = ? (a) 17.38 (b) 17.48 (c) 17.28 (d) 9.73
  7. 7.6.68 + 2.4 = ? (a) 9.08 (b) 8.98 (c) 6.92 (d) 9.18
  8. 8.What is the value of the digit 4 in 61.745? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  9. 9.Which is the smallest: 0.2, 0.084, 0.111, 0.28? (a) 0.2 (b) 0.084 (c) 0.111 (d) 0.28
  10. 10.2.57 + 8.9 = ? (a) 11.37 (b) 3.46 (c) 11.47 (d) 11.57
  11. 11.Which is the greatest: 0.146, 0.2, 0.021, 0.26? (a) 0.146 (b) 0.2 (c) 0.021 (d) 0.26
  12. 12.6.91 + 3.1 = ? (a) 9.91 (b) 10.11 (c) 10.01 (d) 7.22
  13. 13.3.18 + 6.4 = ? (a) 9.48 (b) 9.58 (c) 3.82 (d) 9.68
  14. 14.8.42 + 6.6 = ? (a) 9.08 (b) 15.12 (c) 14.92 (d) 15.02
  15. 15.Which is the smallest: 0.8, 0.778, 0.096, 0.88? (a) 0.8 (b) 0.778 (c) 0.096 (d) 0.88
  16. 16.What is the value of the digit 2 in 92.834? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  17. 17.9.99 + 5.1 = ? (a) 15.09 (b) 10.5 (c) 14.99 (d) 15.19
  18. 18.What is the value of the digit 6 in 25.196? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  19. 19.What is the value of the digit 4 in 57.684? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  20. 20.2.17 + 8.1 = ? (a) 10.17 (b) 10.27 (c) 10.37 (d) 2.98
  21. 21.What is the value of the digit 1 in 54.931? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  22. 22.What is the value of the digit 1 in 58.139? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  23. 23.2.05 + 7.8 = ? (a) 2.83 (b) 9.95 (c) 9.75 (d) 9.85
  24. 24.5.53 + 2.1 = ? (a) 5.74 (b) 7.53 (c) 7.73 (d) 7.63
  25. 25.Which is the smallest: 0.031, 0.21, 0.136, 0.2? (a) 0.031 (b) 0.21 (c) 0.136 (d) 0.2
  26. 26.What is the value of the digit 7 in 75.149? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  27. 27.7.57 + 9.8 = ? (a) 8.55 (b) 17.37 (c) 17.27 (d) 17.47
  28. 28.1.05 + 5.1 = ? (a) 6.15 (b) 1.56 (c) 6.05 (d) 6.25
  29. 29.7.97 + 2.1 = ? (a) 9.97 (b) 10.07 (c) 10.17 (d) 8.18
  30. 30.Which is the greatest: 0.377, 0.011, 0.4, 0.47? (a) 0.377 (b) 0.011 (c) 0.4 (d) 0.47
  31. 31.What is the value of the digit 3 in 21.364? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  32. 32.What is the value of the digit 6 in 14.962? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  33. 33.What is the value of the digit 3 in 36.578? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  34. 34.8.41 + 2.3 = ? (a) 10.81 (b) 8.64 (c) 10.71 (d) 10.61
  35. 35.9.46 + 4.2 = ? (a) 13.56 (b) 13.66 (c) 9.88 (d) 13.76
  36. 36.Which is the greatest: 0.013, 0.2, 0.28, 0.174? (a) 0.013 (b) 0.2 (c) 0.28 (d) 0.174
  37. 37.3.73 + 5.7 = ? (a) 9.33 (b) 4.3 (c) 9.43 (d) 9.53
  38. 38.Which is the greatest: 0.6, 0.583, 0.054, 0.64? (a) 0.6 (b) 0.583 (c) 0.054 (d) 0.64
  39. 39.What is the value of the digit 2 in 28.631? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  40. 40.What is the value of the digit 9 in 24.963? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9

Answer key

  1. 0.013
  2. 0.024
  3. 0.37
  4. 4.59
  5. 0.76
  6. 17.38
  7. 9.08
  8. 0.04
  9. 0.084
  10. 11.47
  11. 0.26
  12. 10.01
  13. 9.58
  14. 15.02
  15. 0.096
  16. 2
  17. 15.09
  18. 0.006
  19. 0.004
  20. 10.27
  21. 0.001
  22. 0.1
  23. 9.85
  24. 7.63
  25. 0.031
  26. 70
  27. 17.37
  28. 6.15
  29. 10.07
  30. 0.47
  31. 0.3
  32. 0.06
  33. 30
  34. 10.71
  35. 13.66
  36. 0.28
  37. 9.43
  38. 0.64
  39. 20
  40. 0.9

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