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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 83 · 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: 0.56, 0.5, 0.035, 0.414? (a) 0.56 (b) 0.5 (c) 0.035 (d) 0.414
  2. 2.5.07 + 3.7 = ? (a) 8.87 (b) 8.67 (c) 5.44 (d) 8.77
  3. 3.4.81 + 3.5 = ? (a) 5.16 (b) 8.41 (c) 8.21 (d) 8.31
  4. 4.What is the value of the digit 9 in 51.392? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  5. 5.Which is the smallest: 0.763, 0.013, 0.85, 0.8? (a) 0.763 (b) 0.013 (c) 0.85 (d) 0.8
  6. 6.Which is the greatest: 0.061, 0.5, 0.454, 0.57? (a) 0.061 (b) 0.5 (c) 0.454 (d) 0.57
  7. 7.What is the value of the digit 4 in 43.876? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  8. 8.Which is the smallest: 0.022, 0.54, 0.5, 0.495? (a) 0.022 (b) 0.54 (c) 0.5 (d) 0.495
  9. 9.Which is the greatest: 0.6, 0.522, 0.031, 0.65? (a) 0.6 (b) 0.522 (c) 0.031 (d) 0.65
  10. 10.What is the value of the digit 7 in 78.615? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  11. 11.What is the value of the digit 9 in 49.678? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  12. 12.3.38 + 8.2 = ? (a) 11.68 (b) 11.58 (c) 11.48 (d) 4.2
  13. 13.7.44 + 6.3 = ? (a) 13.64 (b) 13.74 (c) 13.84 (d) 8.07
  14. 14.Which is the greatest: 0.22, 0.112, 0.2, 0.048? (a) 0.22 (b) 0.112 (c) 0.2 (d) 0.048
  15. 15.Which is the greatest: 0.017, 0.223, 0.3, 0.31? (a) 0.017 (b) 0.223 (c) 0.3 (d) 0.31
  16. 16.Which is the smallest: 0.82, 0.767, 0.074, 0.8? (a) 0.82 (b) 0.767 (c) 0.074 (d) 0.8
  17. 17.8.47 + 4.9 = ? (a) 13.47 (b) 13.37 (c) 13.27 (d) 8.96
  18. 18.Which is the greatest: 0.027, 0.5, 0.426, 0.53? (a) 0.027 (b) 0.5 (c) 0.426 (d) 0.53
  19. 19.7.77 + 8.1 = ? (a) 15.77 (b) 15.97 (c) 8.58 (d) 15.87
  20. 20.What is the value of the digit 9 in 47.189? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  21. 21.Which is the greatest: 0.078, 0.8, 0.729, 0.83? (a) 0.078 (b) 0.8 (c) 0.729 (d) 0.83
  22. 22.What is the value of the digit 3 in 63.147? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  23. 23.Which is the smallest: 0.044, 0.699, 0.75, 0.7? (a) 0.044 (b) 0.699 (c) 0.75 (d) 0.7
  24. 24.What is the value of the digit 1 in 12.359? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  25. 25.What is the value of the digit 2 in 92.385? (a) 2 (b) 20 (c) 0.2 (d) 0.02
  26. 26.9.19 + 6.7 = ? (a) 15.99 (b) 15.79 (c) 9.86 (d) 15.89
  27. 27.Which is the greatest: 0.4, 0.43, 0.073, 0.333? (a) 0.4 (b) 0.43 (c) 0.073 (d) 0.333
  28. 28.Which is the greatest: 0.088, 0.143, 0.28, 0.2? (a) 0.088 (b) 0.143 (c) 0.28 (d) 0.2
  29. 29.What is the value of the digit 3 in 64.573? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  30. 30.Which is the smallest: 0.652, 0.7, 0.76, 0.031? (a) 0.652 (b) 0.7 (c) 0.76 (d) 0.031
  31. 31.4.91 + 8.1 = ? (a) 5.72 (b) 12.91 (c) 13.11 (d) 13.01
  32. 32.Which is the smallest: 0.348, 0.048, 0.4, 0.45? (a) 0.348 (b) 0.048 (c) 0.4 (d) 0.45
  33. 33.8.63 + 8.6 = ? (a) 17.33 (b) 17.23 (c) 9.49 (d) 17.13
  34. 34.1.81 + 9.3 = ? (a) 2.74 (b) 11.01 (c) 11.21 (d) 11.11
  35. 35.What is the value of the digit 2 in 36.284? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  36. 36.Which is the smallest: 0.311, 0.4, 0.072, 0.42? (a) 0.311 (b) 0.4 (c) 0.072 (d) 0.42
  37. 37.8.51 + 4.7 = ? (a) 13.31 (b) 8.98 (c) 13.11 (d) 13.21
  38. 38.Which is the greatest: 0.121, 0.26, 0.038, 0.2? (a) 0.121 (b) 0.26 (c) 0.038 (d) 0.2
  39. 39.3.81 + 1.9 = ? (a) 4 (b) 5.61 (c) 5.71 (d) 5.81
  40. 40.What is the value of the digit 1 in 73.156? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1

Answer key

  1. 0.035
  2. 8.77
  3. 8.31
  4. 0.09
  5. 0.013
  6. 0.57
  7. 40
  8. 0.022
  9. 0.65
  10. 70
  11. 9
  12. 11.58
  13. 13.74
  14. 0.22
  15. 0.31
  16. 0.074
  17. 13.37
  18. 0.53
  19. 15.87
  20. 0.009
  21. 0.83
  22. 3
  23. 0.044
  24. 10
  25. 2
  26. 15.89
  27. 0.43
  28. 0.28
  29. 0.003
  30. 0.031
  31. 13.01
  32. 0.048
  33. 17.23
  34. 11.11
  35. 0.2
  36. 0.072
  37. 13.21
  38. 0.26
  39. 5.71
  40. 0.1

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