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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 402 · 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.What is the value of the digit 5 in 25.789? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  2. 2.Which is the greatest: 0.258, 0.32, 0.033, 0.3? (a) 0.258 (b) 0.32 (c) 0.033 (d) 0.3
  3. 3.4.32 + 2.1 = ? (a) 6.32 (b) 4.53 (c) 6.42 (d) 6.52
  4. 4.What is the value of the digit 8 in 27.384? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  5. 5.9.52 + 9.8 = ? (a) 19.42 (b) 10.5 (c) 19.32 (d) 19.22
  6. 6.2.71 + 6.1 = ? (a) 8.71 (b) 3.32 (c) 8.81 (d) 8.91
  7. 7.5.97 + 5.8 = ? (a) 11.87 (b) 6.55 (c) 11.77 (d) 11.67
  8. 8.What is the value of the digit 7 in 87.591? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  9. 9.What is the value of the digit 9 in 81.593? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9
  10. 10.7.67 + 1.1 = ? (a) 7.78 (b) 8.67 (c) 8.87 (d) 8.77
  11. 11.4.24 + 8.2 = ? (a) 5.06 (b) 12.54 (c) 12.44 (d) 12.34
  12. 12.What is the value of the digit 4 in 32.471? (a) 0.004 (b) 0.04 (c) 4 (d) 0.4
  13. 13.2.26 + 8.8 = ? (a) 11.16 (b) 3.14 (c) 11.06 (d) 10.96
  14. 14.Which is the smallest: 0.67, 0.6, 0.041, 0.524? (a) 0.67 (b) 0.6 (c) 0.041 (d) 0.524
  15. 15.Which is the greatest: 0.051, 0.22, 0.2, 0.188? (a) 0.051 (b) 0.22 (c) 0.2 (d) 0.188
  16. 16.What is the value of the digit 7 in 58.673? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  17. 17.Which is the smallest: 0.086, 0.78, 0.623, 0.7? (a) 0.086 (b) 0.78 (c) 0.623 (d) 0.7
  18. 18.Which is the smallest: 0.2, 0.019, 0.27, 0.166? (a) 0.2 (b) 0.019 (c) 0.27 (d) 0.166
  19. 19.What is the value of the digit 9 in 25.976? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  20. 20.9.26 + 1.6 = ? (a) 9.42 (b) 10.96 (c) 10.76 (d) 10.86
  21. 21.Which is the smallest: 0.017, 0.2, 0.182, 0.29? (a) 0.017 (b) 0.2 (c) 0.182 (d) 0.29
  22. 22.Which is the greatest: 0.6, 0.63, 0.083, 0.522? (a) 0.6 (b) 0.63 (c) 0.083 (d) 0.522
  23. 23.2.37 + 2.4 = ? (a) 4.77 (b) 4.87 (c) 4.67 (d) 2.61
  24. 24.What is the value of the digit 7 in 48.671? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  25. 25.Which is the greatest: 0.22, 0.054, 0.2, 0.186? (a) 0.22 (b) 0.054 (c) 0.2 (d) 0.186
  26. 26.6.71 + 8.2 = ? (a) 15.01 (b) 14.91 (c) 14.81 (d) 7.53
  27. 27.What is the value of the digit 1 in 42.716? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  28. 28.3.75 + 9.4 = ? (a) 4.69 (b) 13.25 (c) 13.05 (d) 13.15
  29. 29.3.43 + 7.5 = ? (a) 10.83 (b) 10.93 (c) 4.18 (d) 11.03
  30. 30.1.09 + 6.2 = ? (a) 1.71 (b) 7.39 (c) 7.29 (d) 7.19
  31. 31.4.99 + 9.6 = ? (a) 14.69 (b) 5.95 (c) 14.59 (d) 14.49
  32. 32.Which is the greatest: 0.744, 0.085, 0.8, 0.87? (a) 0.744 (b) 0.085 (c) 0.8 (d) 0.87
  33. 33.Which is the greatest: 0.593, 0.6, 0.66, 0.074? (a) 0.593 (b) 0.6 (c) 0.66 (d) 0.074
  34. 34.8.97 + 6.4 = ? (a) 9.61 (b) 15.47 (c) 15.27 (d) 15.37
  35. 35.Which is the greatest: 0.078, 0.71, 0.7, 0.622? (a) 0.078 (b) 0.71 (c) 0.7 (d) 0.622
  36. 36.Which is the greatest: 0.3, 0.212, 0.021, 0.36? (a) 0.3 (b) 0.212 (c) 0.021 (d) 0.36
  37. 37.What is the value of the digit 9 in 19.472? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  38. 38.Which is the smallest: 0.157, 0.064, 0.2, 0.22? (a) 0.157 (b) 0.064 (c) 0.2 (d) 0.22
  39. 39.Which is the greatest: 0.46, 0.074, 0.4, 0.333? (a) 0.46 (b) 0.074 (c) 0.4 (d) 0.333
  40. 40.6.45 + 1.4 = ? (a) 6.59 (b) 7.75 (c) 7.95 (d) 7.85

Answer key

  1. 5
  2. 0.32
  3. 6.42
  4. 0.08
  5. 19.32
  6. 8.81
  7. 11.77
  8. 7
  9. 0.09
  10. 8.77
  11. 12.44
  12. 0.4
  13. 11.06
  14. 0.041
  15. 0.22
  16. 0.07
  17. 0.086
  18. 0.019
  19. 0.9
  20. 10.86
  21. 0.017
  22. 0.63
  23. 4.77
  24. 0.07
  25. 0.22
  26. 14.91
  27. 0.01
  28. 13.15
  29. 10.93
  30. 7.29
  31. 14.59
  32. 0.87
  33. 0.66
  34. 15.37
  35. 0.71
  36. 0.36
  37. 9
  38. 0.064
  39. 0.46
  40. 7.85

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