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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 831 · 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: 0.61, 0.6, 0.054, 0.535? (a) 0.61 (b) 0.6 (c) 0.054 (d) 0.535
  2. 2.6.86 + 5.1 = ? (a) 12.06 (b) 7.37 (c) 11.86 (d) 11.96
  3. 3.8.34 + 3.8 = ? (a) 12.24 (b) 8.72 (c) 12.14 (d) 12.04
  4. 4.Which is the greatest: 0.075, 0.33, 0.3, 0.296? (a) 0.075 (b) 0.33 (c) 0.3 (d) 0.296
  5. 5.9.47 + 5.3 = ? (a) 14.87 (b) 14.77 (c) 14.67 (d) 10
  6. 6.5.83 + 1.5 = ? (a) 7.23 (b) 5.98 (c) 7.33 (d) 7.43
  7. 7.1.53 + 4.1 = ? (a) 1.94 (b) 5.63 (c) 5.73 (d) 5.53
  8. 8.What is the value of the digit 9 in 84.139? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  9. 9.Which is the greatest: 0.32, 0.234, 0.054, 0.3? (a) 0.32 (b) 0.234 (c) 0.054 (d) 0.3
  10. 10.8.66 + 7.7 = ? (a) 16.46 (b) 9.43 (c) 16.26 (d) 16.36
  11. 11.Which is the smallest: 0.051, 0.3, 0.39, 0.286? (a) 0.051 (b) 0.3 (c) 0.39 (d) 0.286
  12. 12.8.51 + 8.6 = ? (a) 9.37 (b) 17.01 (c) 17.11 (d) 17.21
  13. 13.What is the value of the digit 2 in 34.257? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  14. 14.8.65 + 1.7 = ? (a) 10.25 (b) 10.35 (c) 10.45 (d) 8.82
  15. 15.7.91 + 9.2 = ? (a) 8.83 (b) 17.01 (c) 17.21 (d) 17.11
  16. 16.Which is the greatest: 0.536, 0.6, 0.61, 0.032? (a) 0.536 (b) 0.6 (c) 0.61 (d) 0.032
  17. 17.6.51 + 7.1 = ? (a) 13.51 (b) 13.71 (c) 7.22 (d) 13.61
  18. 18.9.53 + 5.7 = ? (a) 10.1 (b) 15.33 (c) 15.23 (d) 15.13
  19. 19.What is the value of the digit 6 in 41.396? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  20. 20.What is the value of the digit 4 in 29.634? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  21. 21.3.84 + 8.6 = ? (a) 12.34 (b) 12.54 (c) 12.44 (d) 4.7
  22. 22.Which is the smallest: 0.68, 0.6, 0.553, 0.068? (a) 0.68 (b) 0.6 (c) 0.553 (d) 0.068
  23. 23.What is the value of the digit 1 in 21.354? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  24. 24.Which is the smallest: 0.56, 0.5, 0.027, 0.446? (a) 0.56 (b) 0.5 (c) 0.027 (d) 0.446
  25. 25.4.63 + 8.4 = ? (a) 5.47 (b) 13.13 (c) 13.03 (d) 12.93
  26. 26.Which is the greatest: 0.055, 0.68, 0.536, 0.6? (a) 0.055 (b) 0.68 (c) 0.536 (d) 0.6
  27. 27.What is the value of the digit 1 in 21.739? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  28. 28.1.89 + 7.6 = ? (a) 9.59 (b) 9.39 (c) 2.65 (d) 9.49
  29. 29.5.71 + 9.8 = ? (a) 15.41 (b) 15.61 (c) 15.51 (d) 6.69
  30. 30.5.54 + 4.9 = ? (a) 10.34 (b) 10.44 (c) 10.54 (d) 6.03
  31. 31.What is the value of the digit 6 in 72.586? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  32. 32.Which is the greatest: 0.061, 0.37, 0.3, 0.272? (a) 0.061 (b) 0.37 (c) 0.3 (d) 0.272
  33. 33.What is the value of the digit 1 in 52.314? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  34. 34.What is the value of the digit 4 in 17.384? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  35. 35.What is the value of the digit 2 in 13.925? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  36. 36.Which is the smallest: 0.3, 0.086, 0.32, 0.259? (a) 0.3 (b) 0.086 (c) 0.32 (d) 0.259
  37. 37.What is the value of the digit 6 in 24.165? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  38. 38.7.01 + 3.3 = ? (a) 10.21 (b) 10.41 (c) 10.31 (d) 7.34
  39. 39.What is the value of the digit 3 in 76.135? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  40. 40.What is the value of the digit 8 in 85.273? (a) 0.8 (b) 80 (c) 0.08 (d) 8

Answer key

  1. 0.61
  2. 11.96
  3. 12.14
  4. 0.33
  5. 14.77
  6. 7.33
  7. 5.63
  8. 0.009
  9. 0.32
  10. 16.36
  11. 0.051
  12. 17.11
  13. 0.2
  14. 10.35
  15. 17.11
  16. 0.61
  17. 13.61
  18. 15.23
  19. 0.006
  20. 0.004
  21. 12.44
  22. 0.068
  23. 1
  24. 0.027
  25. 13.03
  26. 0.68
  27. 1
  28. 9.49
  29. 15.51
  30. 10.44
  31. 0.006
  32. 0.37
  33. 0.01
  34. 0.004
  35. 0.02
  36. 0.086
  37. 0.06
  38. 10.31
  39. 0.03
  40. 80

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