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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 272 · 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: 0.21, 0.2, 0.199, 0.015? (a) 0.21 (b) 0.2 (c) 0.199 (d) 0.015
  2. 2.6.46 + 6.7 = ? (a) 13.16 (b) 7.13 (c) 13.26 (d) 13.06
  3. 3.Which is the smallest: 0.8, 0.721, 0.047, 0.85? (a) 0.8 (b) 0.721 (c) 0.047 (d) 0.85
  4. 4.6.12 + 6.8 = ? (a) 12.82 (b) 12.92 (c) 13.02 (d) 6.8
  5. 5.Which is the greatest: 0.174, 0.063, 0.2, 0.23? (a) 0.174 (b) 0.063 (c) 0.2 (d) 0.23
  6. 6.Which is the greatest: 0.77, 0.634, 0.7, 0.079? (a) 0.77 (b) 0.634 (c) 0.7 (d) 0.079
  7. 7.Which is the greatest: 0.26, 0.191, 0.2, 0.079? (a) 0.26 (b) 0.191 (c) 0.2 (d) 0.079
  8. 8.What is the value of the digit 1 in 95.841? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  9. 9.5.78 + 5.6 = ? (a) 6.34 (b) 11.28 (c) 11.38 (d) 11.48
  10. 10.Which is the greatest: 0.444, 0.033, 0.52, 0.5? (a) 0.444 (b) 0.033 (c) 0.52 (d) 0.5
  11. 11.1.71 + 2.3 = ? (a) 1.94 (b) 4.01 (c) 4.11 (d) 3.91
  12. 12.2.23 + 7.6 = ? (a) 9.83 (b) 9.73 (c) 9.93 (d) 2.99
  13. 13.What is the value of the digit 6 in 67.159? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  14. 14.9.41 + 5.9 = ? (a) 15.21 (b) 15.41 (c) 15.31 (d) 10
  15. 15.1.13 + 8.6 = ? (a) 9.73 (b) 9.63 (c) 9.83 (d) 1.99
  16. 16.Which is the smallest: 0.44, 0.349, 0.4, 0.032? (a) 0.44 (b) 0.349 (c) 0.4 (d) 0.032
  17. 17.Which is the greatest: 0.041, 0.181, 0.25, 0.2? (a) 0.041 (b) 0.181 (c) 0.25 (d) 0.2
  18. 18.What is the value of the digit 1 in 36.214? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  19. 19.7.54 + 1.4 = ? (a) 9.04 (b) 8.84 (c) 7.68 (d) 8.94
  20. 20.Which is the greatest: 0.071, 0.484, 0.54, 0.5? (a) 0.071 (b) 0.484 (c) 0.54 (d) 0.5
  21. 21.7.41 + 7.6 = ? (a) 15.11 (b) 15.01 (c) 14.91 (d) 8.17
  22. 22.5.89 + 4.9 = ? (a) 10.89 (b) 10.69 (c) 10.79 (d) 6.38
  23. 23.2.59 + 2.1 = ? (a) 4.79 (b) 2.8 (c) 4.59 (d) 4.69
  24. 24.7.07 + 7.1 = ? (a) 7.78 (b) 14.07 (c) 14.27 (d) 14.17
  25. 25.What is the value of the digit 2 in 62.389? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  26. 26.7.06 + 4.1 = ? (a) 7.47 (b) 11.26 (c) 11.06 (d) 11.16
  27. 27.1.69 + 3.5 = ? (a) 5.19 (b) 5.29 (c) 5.09 (d) 2.04
  28. 28.5.57 + 3.9 = ? (a) 9.37 (b) 5.96 (c) 9.47 (d) 9.57
  29. 29.Which is the smallest: 0.267, 0.31, 0.016, 0.3? (a) 0.267 (b) 0.31 (c) 0.016 (d) 0.3
  30. 30.1.97 + 2.3 = ? (a) 4.37 (b) 2.2 (c) 4.27 (d) 4.17
  31. 31.What is the value of the digit 6 in 36.849? (a) 0.06 (b) 6 (c) 0.6 (d) 60
  32. 32.6.37 + 7.8 = ? (a) 7.15 (b) 14.07 (c) 14.27 (d) 14.17
  33. 33.8.64 + 9.7 = ? (a) 9.61 (b) 18.44 (c) 18.24 (d) 18.34
  34. 34.7.42 + 1.5 = ? (a) 8.82 (b) 7.57 (c) 9.02 (d) 8.92
  35. 35.Which is the smallest: 0.48, 0.4, 0.372, 0.067? (a) 0.48 (b) 0.4 (c) 0.372 (d) 0.067
  36. 36.Which is the smallest: 0.226, 0.35, 0.093, 0.3? (a) 0.226 (b) 0.35 (c) 0.093 (d) 0.3
  37. 37.3.93 + 6.8 = ? (a) 10.73 (b) 10.63 (c) 10.83 (d) 4.61
  38. 38.Which is the smallest: 0.327, 0.031, 0.4, 0.42? (a) 0.327 (b) 0.031 (c) 0.4 (d) 0.42
  39. 39.What is the value of the digit 4 in 38.416? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  40. 40.Which is the greatest: 0.66, 0.065, 0.6, 0.571? (a) 0.66 (b) 0.065 (c) 0.6 (d) 0.571

Answer key

  1. 0.21
  2. 13.16
  3. 0.047
  4. 12.92
  5. 0.23
  6. 0.77
  7. 0.26
  8. 0.001
  9. 11.38
  10. 0.52
  11. 4.01
  12. 9.83
  13. 60
  14. 15.31
  15. 9.73
  16. 0.032
  17. 0.25
  18. 0.01
  19. 8.94
  20. 0.54
  21. 15.01
  22. 10.79
  23. 4.69
  24. 14.17
  25. 2
  26. 11.16
  27. 5.19
  28. 9.47
  29. 0.016
  30. 4.27
  31. 6
  32. 14.17
  33. 18.34
  34. 8.92
  35. 0.067
  36. 0.093
  37. 10.73
  38. 0.031
  39. 0.4
  40. 0.66

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