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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 642 · 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. 1.8.48 + 4.4 = ? (a) 12.98 (b) 12.78 (c) 8.92 (d) 12.88
  2. 2.Which is the smallest: 0.097, 0.51, 0.5, 0.442? (a) 0.097 (b) 0.51 (c) 0.5 (d) 0.442
  3. 3.Which is the smallest: 0.6, 0.68, 0.587, 0.079? (a) 0.6 (b) 0.68 (c) 0.587 (d) 0.079
  4. 4.Which is the greatest: 0.061, 0.393, 0.4, 0.41? (a) 0.061 (b) 0.393 (c) 0.4 (d) 0.41
  5. 5.5.15 + 9.7 = ? (a) 6.12 (b) 14.95 (c) 14.85 (d) 14.75
  6. 6.6.21 + 7.1 = ? (a) 6.92 (b) 13.31 (c) 13.21 (d) 13.41
  7. 7.4.68 + 9.6 = ? (a) 14.38 (b) 14.18 (c) 14.28 (d) 5.64
  8. 8.Which is the smallest: 0.434, 0.056, 0.57, 0.5? (a) 0.434 (b) 0.056 (c) 0.57 (d) 0.5
  9. 9.What is the value of the digit 6 in 16.298? (a) 0.06 (b) 60 (c) 6 (d) 0.6
  10. 10.2.72 + 4.2 = ? (a) 7.02 (b) 6.82 (c) 6.92 (d) 3.14
  11. 11.What is the value of the digit 5 in 15.326? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  12. 12.Which is the smallest: 0.052, 0.88, 0.8, 0.792? (a) 0.052 (b) 0.88 (c) 0.8 (d) 0.792
  13. 13.Which is the greatest: 0.315, 0.43, 0.036, 0.4? (a) 0.315 (b) 0.43 (c) 0.036 (d) 0.4
  14. 14.Which is the greatest: 0.29, 0.191, 0.2, 0.086? (a) 0.29 (b) 0.191 (c) 0.2 (d) 0.086
  15. 15.What is the value of the digit 7 in 63.817? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  16. 16.2.63 + 1.8 = ? (a) 4.33 (b) 4.43 (c) 2.81 (d) 4.53
  17. 17.Which is the greatest: 0.789, 0.8, 0.013, 0.89? (a) 0.789 (b) 0.8 (c) 0.013 (d) 0.89
  18. 18.4.42 + 6.9 = ? (a) 11.42 (b) 5.11 (c) 11.22 (d) 11.32
  19. 19.What is the value of the digit 2 in 82.951? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  20. 20.6.73 + 8.1 = ? (a) 14.83 (b) 7.54 (c) 14.93 (d) 14.73
  21. 21.3.21 + 5.4 = ? (a) 8.61 (b) 3.75 (c) 8.51 (d) 8.71
  22. 22.Which is the smallest: 0.46, 0.4, 0.332, 0.077? (a) 0.46 (b) 0.4 (c) 0.332 (d) 0.077
  23. 23.What is the value of the digit 5 in 65.471? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  24. 24.What is the value of the digit 3 in 73.146? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  25. 25.2.38 + 2.8 = ? (a) 5.28 (b) 2.66 (c) 5.08 (d) 5.18
  26. 26.7.01 + 3.3 = ? (a) 7.34 (b) 10.41 (c) 10.31 (d) 10.21
  27. 27.Which is the greatest: 0.084, 0.161, 0.2, 0.24? (a) 0.084 (b) 0.161 (c) 0.2 (d) 0.24
  28. 28.Which is the greatest: 0.24, 0.099, 0.2, 0.138? (a) 0.24 (b) 0.099 (c) 0.2 (d) 0.138
  29. 29.Which is the smallest: 0.42, 0.394, 0.4, 0.033? (a) 0.42 (b) 0.394 (c) 0.4 (d) 0.033
  30. 30.Which is the smallest: 0.39, 0.3, 0.031, 0.214? (a) 0.39 (b) 0.3 (c) 0.031 (d) 0.214
  31. 31.3.04 + 2.8 = ? (a) 5.84 (b) 5.74 (c) 3.32 (d) 5.94
  32. 32.8.51 + 2.9 = ? (a) 8.8 (b) 11.31 (c) 11.51 (d) 11.41
  33. 33.Which is the greatest: 0.46, 0.4, 0.338, 0.036? (a) 0.46 (b) 0.4 (c) 0.338 (d) 0.036
  34. 34.What is the value of the digit 1 in 82.951? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  35. 35.What is the value of the digit 6 in 18.673? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  36. 36.Which is the greatest: 0.7, 0.069, 0.72, 0.659? (a) 0.7 (b) 0.069 (c) 0.72 (d) 0.659
  37. 37.Which is the greatest: 0.72, 0.091, 0.629, 0.7? (a) 0.72 (b) 0.091 (c) 0.629 (d) 0.7
  38. 38.Which is the greatest: 0.115, 0.2, 0.054, 0.21? (a) 0.115 (b) 0.2 (c) 0.054 (d) 0.21
  39. 39.Which is the smallest: 0.88, 0.072, 0.8, 0.767? (a) 0.88 (b) 0.072 (c) 0.8 (d) 0.767
  40. 40.What is the value of the digit 7 in 16.732? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7

Answer key

  1. 12.88
  2. 0.097
  3. 0.079
  4. 0.41
  5. 14.85
  6. 13.31
  7. 14.28
  8. 0.056
  9. 6
  10. 6.92
  11. 5
  12. 0.052
  13. 0.43
  14. 0.29
  15. 0.007
  16. 4.43
  17. 0.89
  18. 11.32
  19. 2
  20. 14.83
  21. 8.61
  22. 0.077
  23. 5
  24. 3
  25. 5.18
  26. 10.31
  27. 0.24
  28. 0.24
  29. 0.033
  30. 0.031
  31. 5.84
  32. 11.41
  33. 0.46
  34. 0.001
  35. 0.6
  36. 0.72
  37. 0.72
  38. 0.21
  39. 0.072
  40. 0.7

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