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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 120 · 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 greatest: 0.26, 0.142, 0.035, 0.2? (a) 0.26 (b) 0.142 (c) 0.035 (d) 0.2
  2. 2.Which is the greatest: 0.41, 0.4, 0.313, 0.061? (a) 0.41 (b) 0.4 (c) 0.313 (d) 0.061
  3. 3.1.23 + 4.5 = ? (a) 5.63 (b) 5.83 (c) 5.73 (d) 1.68
  4. 4.What is the value of the digit 2 in 45.231? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  5. 5.6.35 + 7.2 = ? (a) 13.45 (b) 13.55 (c) 7.07 (d) 13.65
  6. 6.What is the value of the digit 2 in 29.648? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  7. 7.8.52 + 9.9 = ? (a) 18.42 (b) 18.52 (c) 18.32 (d) 9.51
  8. 8.What is the value of the digit 9 in 81.329? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  9. 9.What is the value of the digit 2 in 62.875? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  10. 10.6.64 + 1.9 = ? (a) 8.64 (b) 8.44 (c) 6.83 (d) 8.54
  11. 11.4.61 + 7.4 = ? (a) 12.11 (b) 5.35 (c) 12.01 (d) 11.91
  12. 12.Which is the greatest: 0.053, 0.72, 0.685, 0.7? (a) 0.053 (b) 0.72 (c) 0.685 (d) 0.7
  13. 13.Which is the smallest: 0.416, 0.5, 0.087, 0.55? (a) 0.416 (b) 0.5 (c) 0.087 (d) 0.55
  14. 14.6.87 + 5.6 = ? (a) 12.57 (b) 12.37 (c) 7.43 (d) 12.47
  15. 15.1.78 + 7.2 = ? (a) 8.88 (b) 8.98 (c) 9.08 (d) 2.5
  16. 16.Which is the greatest: 0.4, 0.43, 0.331, 0.063? (a) 0.4 (b) 0.43 (c) 0.331 (d) 0.063
  17. 17.Which is the greatest: 0.228, 0.022, 0.3, 0.36? (a) 0.228 (b) 0.022 (c) 0.3 (d) 0.36
  18. 18.What is the value of the digit 8 in 82.465? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  19. 19.7.21 + 2.1 = ? (a) 7.42 (b) 9.31 (c) 9.41 (d) 9.21
  20. 20.Which is the greatest: 0.062, 0.2, 0.133, 0.21? (a) 0.062 (b) 0.2 (c) 0.133 (d) 0.21
  21. 21.7.32 + 8.1 = ? (a) 15.42 (b) 8.13 (c) 15.52 (d) 15.32
  22. 22.Which is the greatest: 0.6, 0.66, 0.582, 0.077? (a) 0.6 (b) 0.66 (c) 0.582 (d) 0.077
  23. 23.What is the value of the digit 9 in 39.572? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  24. 24.Which is the smallest: 0.781, 0.094, 0.8, 0.89? (a) 0.781 (b) 0.094 (c) 0.8 (d) 0.89
  25. 25.Which is the greatest: 0.243, 0.031, 0.36, 0.3? (a) 0.243 (b) 0.031 (c) 0.36 (d) 0.3
  26. 26.Which is the smallest: 0.021, 0.225, 0.3, 0.34? (a) 0.021 (b) 0.225 (c) 0.3 (d) 0.34
  27. 27.What is the value of the digit 2 in 24.936? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  28. 28.Which is the greatest: 0.017, 0.2, 0.24, 0.136? (a) 0.017 (b) 0.2 (c) 0.24 (d) 0.136
  29. 29.What is the value of the digit 2 in 29.467? (a) 0.02 (b) 0.2 (c) 2 (d) 20
  30. 30.Which is the smallest: 0.434, 0.58, 0.5, 0.084? (a) 0.434 (b) 0.58 (c) 0.5 (d) 0.084
  31. 31.Which is the smallest: 0.68, 0.563, 0.071, 0.6? (a) 0.68 (b) 0.563 (c) 0.071 (d) 0.6
  32. 32.Which is the greatest: 0.024, 0.124, 0.2, 0.25? (a) 0.024 (b) 0.124 (c) 0.2 (d) 0.25
  33. 33.What is the value of the digit 3 in 23.461? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  34. 34.What is the value of the digit 2 in 25.974? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  35. 35.What is the value of the digit 2 in 13.562? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  36. 36.3.11 + 7.5 = ? (a) 10.51 (b) 10.61 (c) 10.71 (d) 3.86
  37. 37.Which is the smallest: 0.63, 0.081, 0.561, 0.6? (a) 0.63 (b) 0.081 (c) 0.561 (d) 0.6
  38. 38.What is the value of the digit 1 in 94.351? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  39. 39.What is the value of the digit 9 in 94.316? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  40. 40.Which is the smallest: 0.056, 0.162, 0.2, 0.22? (a) 0.056 (b) 0.162 (c) 0.2 (d) 0.22

Answer key

  1. 0.26
  2. 0.41
  3. 5.73
  4. 0.2
  5. 13.55
  6. 20
  7. 18.42
  8. 0.009
  9. 2
  10. 8.54
  11. 12.01
  12. 0.72
  13. 0.087
  14. 12.47
  15. 8.98
  16. 0.43
  17. 0.36
  18. 80
  19. 9.31
  20. 0.21
  21. 15.42
  22. 0.66
  23. 9
  24. 0.094
  25. 0.36
  26. 0.021
  27. 20
  28. 0.24
  29. 20
  30. 0.084
  31. 0.071
  32. 0.25
  33. 3
  34. 20
  35. 0.002
  36. 10.61
  37. 0.081
  38. 0.001
  39. 90
  40. 0.056

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