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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 706 · 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. 1.7.82 + 9.6 = ? (a) 17.52 (b) 17.42 (c) 8.78 (d) 17.32
  2. 2.Which is the smallest: 0.6, 0.577, 0.084, 0.62? (a) 0.6 (b) 0.577 (c) 0.084 (d) 0.62
  3. 3.1.29 + 7.3 = ? (a) 8.59 (b) 8.49 (c) 2.02 (d) 8.69
  4. 4.What is the value of the digit 2 in 12.648? (a) 20 (b) 2 (c) 0.02 (d) 0.2
  5. 5.1.17 + 4.5 = ? (a) 5.77 (b) 5.67 (c) 1.62 (d) 5.57
  6. 6.1.54 + 1.4 = ? (a) 1.68 (b) 2.84 (c) 2.94 (d) 3.04
  7. 7.What is the value of the digit 9 in 49.532? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  8. 8.3.21 + 5.7 = ? (a) 8.91 (b) 3.78 (c) 9.01 (d) 8.81
  9. 9.Which is the smallest: 0.57, 0.017, 0.466, 0.5? (a) 0.57 (b) 0.017 (c) 0.466 (d) 0.5
  10. 10.Which is the smallest: 0.6, 0.69, 0.541, 0.025? (a) 0.6 (b) 0.69 (c) 0.541 (d) 0.025
  11. 11.8.32 + 8.5 = ? (a) 9.17 (b) 16.72 (c) 16.82 (d) 16.92
  12. 12.2.18 + 3.1 = ? (a) 5.18 (b) 5.28 (c) 2.49 (d) 5.38
  13. 13.What is the value of the digit 7 in 18.726? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  14. 14.2.41 + 6.2 = ? (a) 3.03 (b) 8.71 (c) 8.51 (d) 8.61
  15. 15.3.61 + 8.1 = ? (a) 11.71 (b) 11.61 (c) 4.42 (d) 11.81
  16. 16.Which is the smallest: 0.086, 0.783, 0.83, 0.8? (a) 0.086 (b) 0.783 (c) 0.83 (d) 0.8
  17. 17.What is the value of the digit 3 in 13.456? (a) 3 (b) 0.03 (c) 0.3 (d) 30
  18. 18.What is the value of the digit 8 in 35.278? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  19. 19.Which is the greatest: 0.59, 0.5, 0.077, 0.411? (a) 0.59 (b) 0.5 (c) 0.077 (d) 0.411
  20. 20.Which is the greatest: 0.012, 0.511, 0.6, 0.67? (a) 0.012 (b) 0.511 (c) 0.6 (d) 0.67
  21. 21.3.56 + 2.8 = ? (a) 6.36 (b) 6.26 (c) 6.46 (d) 3.84
  22. 22.Which is the greatest: 0.45, 0.016, 0.364, 0.4? (a) 0.45 (b) 0.016 (c) 0.364 (d) 0.4
  23. 23.Which is the greatest: 0.6, 0.036, 0.64, 0.528? (a) 0.6 (b) 0.036 (c) 0.64 (d) 0.528
  24. 24.1.28 + 8.1 = ? (a) 2.09 (b) 9.38 (c) 9.28 (d) 9.48
  25. 25.What is the value of the digit 7 in 46.793? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  26. 26.What is the value of the digit 3 in 38.425? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  27. 27.What is the value of the digit 9 in 79.168? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  28. 28.7.51 + 9.8 = ? (a) 17.31 (b) 17.41 (c) 8.49 (d) 17.21
  29. 29.4.86 + 5.6 = ? (a) 10.46 (b) 10.56 (c) 5.42 (d) 10.36
  30. 30.7.06 + 1.8 = ? (a) 8.76 (b) 7.24 (c) 8.96 (d) 8.86
  31. 31.7.73 + 6.2 = ? (a) 8.35 (b) 13.93 (c) 14.03 (d) 13.83
  32. 32.What is the value of the digit 7 in 83.627? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  33. 33.2.39 + 6.3 = ? (a) 8.59 (b) 8.79 (c) 3.02 (d) 8.69
  34. 34.What is the value of the digit 2 in 83.542? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  35. 35.Which is the smallest: 0.24, 0.031, 0.2, 0.158? (a) 0.24 (b) 0.031 (c) 0.2 (d) 0.158
  36. 36.What is the value of the digit 9 in 76.839? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  37. 37.7.38 + 9.4 = ? (a) 16.88 (b) 16.68 (c) 8.32 (d) 16.78
  38. 38.Which is the smallest: 0.7, 0.023, 0.653, 0.74? (a) 0.7 (b) 0.023 (c) 0.653 (d) 0.74
  39. 39.What is the value of the digit 8 in 45.831? (a) 8 (b) 0.008 (c) 0.8 (d) 0.08
  40. 40.8.96 + 2.8 = ? (a) 11.66 (b) 11.86 (c) 11.76 (d) 9.24

Answer key

  1. 17.42
  2. 0.084
  3. 8.59
  4. 2
  5. 5.67
  6. 2.94
  7. 9
  8. 8.91
  9. 0.017
  10. 0.025
  11. 16.82
  12. 5.28
  13. 0.7
  14. 8.61
  15. 11.71
  16. 0.086
  17. 3
  18. 0.008
  19. 0.59
  20. 0.67
  21. 6.36
  22. 0.45
  23. 0.64
  24. 9.38
  25. 0.7
  26. 30
  27. 9
  28. 17.31
  29. 10.46
  30. 8.86
  31. 13.93
  32. 0.007
  33. 8.69
  34. 0.002
  35. 0.031
  36. 0.009
  37. 16.78
  38. 0.023
  39. 0.8
  40. 11.76

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