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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 493 · 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. 1.6.41 + 9.2 = ? (a) 15.51 (b) 15.61 (c) 15.71 (d) 7.33
  2. 2.What is the value of the digit 8 in 84.256? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  3. 3.Which is the greatest: 0.31, 0.043, 0.3, 0.265? (a) 0.31 (b) 0.043 (c) 0.3 (d) 0.265
  4. 4.Which is the smallest: 0.018, 0.2, 0.132, 0.24? (a) 0.018 (b) 0.2 (c) 0.132 (d) 0.24
  5. 5.1.15 + 9.5 = ? (a) 10.55 (b) 2.1 (c) 10.75 (d) 10.65
  6. 6.5.46 + 5.7 = ? (a) 6.03 (b) 11.26 (c) 11.06 (d) 11.16
  7. 7.9.58 + 4.7 = ? (a) 10.05 (b) 14.38 (c) 14.28 (d) 14.18
  8. 8.8.09 + 5.8 = ? (a) 13.89 (b) 13.79 (c) 13.99 (d) 8.67
  9. 9.4.28 + 7.3 = ? (a) 5.01 (b) 11.48 (c) 11.58 (d) 11.68
  10. 10.8.14 + 2.7 = ? (a) 10.94 (b) 8.41 (c) 10.74 (d) 10.84
  11. 11.What is the value of the digit 9 in 41.973? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  12. 12.Which is the smallest: 0.598, 0.66, 0.6, 0.031? (a) 0.598 (b) 0.66 (c) 0.6 (d) 0.031
  13. 13.9.21 + 1.3 = ? (a) 10.51 (b) 10.61 (c) 10.41 (d) 9.34
  14. 14.Which is the smallest: 0.74, 0.033, 0.7, 0.659? (a) 0.74 (b) 0.033 (c) 0.7 (d) 0.659
  15. 15.Which is the smallest: 0.4, 0.026, 0.385, 0.41? (a) 0.4 (b) 0.026 (c) 0.385 (d) 0.41
  16. 16.What is the value of the digit 3 in 68.531? (a) 0.003 (b) 3 (c) 0.3 (d) 0.03
  17. 17.2.71 + 2.1 = ? (a) 4.81 (b) 4.71 (c) 2.92 (d) 4.91
  18. 18.5.78 + 7.5 = ? (a) 6.53 (b) 13.18 (c) 13.28 (d) 13.38
  19. 19.What is the value of the digit 3 in 28.135? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  20. 20.5.78 + 3.3 = ? (a) 8.98 (b) 9.18 (c) 9.08 (d) 6.11
  21. 21.6.87 + 3.1 = ? (a) 7.18 (b) 10.07 (c) 9.87 (d) 9.97
  22. 22.3.92 + 4.3 = ? (a) 4.35 (b) 8.22 (c) 8.32 (d) 8.12
  23. 23.9.59 + 2.2 = ? (a) 9.81 (b) 11.69 (c) 11.89 (d) 11.79
  24. 24.Which is the greatest: 0.097, 0.61, 0.6, 0.583? (a) 0.097 (b) 0.61 (c) 0.6 (d) 0.583
  25. 25.What is the value of the digit 6 in 36.251? (a) 60 (b) 6 (c) 0.06 (d) 0.6
  26. 26.Which is the greatest: 0.2, 0.116, 0.073, 0.23? (a) 0.2 (b) 0.116 (c) 0.073 (d) 0.23
  27. 27.Which is the greatest: 0.025, 0.2, 0.122, 0.26? (a) 0.025 (b) 0.2 (c) 0.122 (d) 0.26
  28. 28.What is the value of the digit 8 in 51.284? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  29. 29.Which is the smallest: 0.439, 0.036, 0.54, 0.5? (a) 0.439 (b) 0.036 (c) 0.54 (d) 0.5
  30. 30.What is the value of the digit 1 in 31.678? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  31. 31.Which is the smallest: 0.78, 0.651, 0.7, 0.012? (a) 0.78 (b) 0.651 (c) 0.7 (d) 0.012
  32. 32.Which is the greatest: 0.065, 0.54, 0.5, 0.445? (a) 0.065 (b) 0.54 (c) 0.5 (d) 0.445
  33. 33.Which is the greatest: 0.2, 0.22, 0.069, 0.113? (a) 0.2 (b) 0.22 (c) 0.069 (d) 0.113
  34. 34.Which is the smallest: 0.172, 0.034, 0.26, 0.2? (a) 0.172 (b) 0.034 (c) 0.26 (d) 0.2
  35. 35.What is the value of the digit 9 in 76.952? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  36. 36.What is the value of the digit 8 in 59.843? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  37. 37.5.81 + 4.2 = ? (a) 9.91 (b) 6.23 (c) 10.11 (d) 10.01
  38. 38.Which is the smallest: 0.3, 0.37, 0.028, 0.222? (a) 0.3 (b) 0.37 (c) 0.028 (d) 0.222
  39. 39.4.45 + 6.4 = ? (a) 10.75 (b) 10.85 (c) 10.95 (d) 5.09
  40. 40.Which is the smallest: 0.584, 0.047, 0.68, 0.6? (a) 0.584 (b) 0.047 (c) 0.68 (d) 0.6

Answer key

  1. 15.61
  2. 80
  3. 0.31
  4. 0.018
  5. 10.65
  6. 11.16
  7. 14.28
  8. 13.89
  9. 11.58
  10. 10.84
  11. 0.9
  12. 0.031
  13. 10.51
  14. 0.033
  15. 0.026
  16. 0.03
  17. 4.81
  18. 13.28
  19. 0.03
  20. 9.08
  21. 9.97
  22. 8.22
  23. 11.79
  24. 0.61
  25. 6
  26. 0.23
  27. 0.26
  28. 0.08
  29. 0.036
  30. 1
  31. 0.012
  32. 0.54
  33. 0.22
  34. 0.034
  35. 0.9
  36. 0.8
  37. 10.01
  38. 0.028
  39. 10.85
  40. 0.047

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