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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 499 · 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 18.257? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  2. 2.7.54 + 2.2 = ? (a) 9.74 (b) 9.84 (c) 9.64 (d) 7.76
  3. 3.1.16 + 3.7 = ? (a) 4.96 (b) 4.76 (c) 1.53 (d) 4.86
  4. 4.Which is the greatest: 0.047, 0.29, 0.182, 0.2? (a) 0.047 (b) 0.29 (c) 0.182 (d) 0.2
  5. 5.Which is the smallest: 0.85, 0.8, 0.061, 0.711? (a) 0.85 (b) 0.8 (c) 0.061 (d) 0.711
  6. 6.What is the value of the digit 7 in 97.483? (a) 7 (b) 0.7 (c) 70 (d) 0.07
  7. 7.Which is the greatest: 0.515, 0.66, 0.018, 0.6? (a) 0.515 (b) 0.66 (c) 0.018 (d) 0.6
  8. 8.2.35 + 6.5 = ? (a) 8.85 (b) 3 (c) 8.75 (d) 8.95
  9. 9.7.63 + 8.3 = ? (a) 15.83 (b) 8.46 (c) 15.93 (d) 16.03
  10. 10.5.02 + 6.3 = ? (a) 11.42 (b) 11.32 (c) 11.22 (d) 5.65
  11. 11.9.97 + 7.6 = ? (a) 17.57 (b) 17.67 (c) 10.73 (d) 17.47
  12. 12.2.24 + 8.7 = ? (a) 10.94 (b) 11.04 (c) 10.84 (d) 3.11
  13. 13.Which is the smallest: 0.583, 0.61, 0.018, 0.6? (a) 0.583 (b) 0.61 (c) 0.018 (d) 0.6
  14. 14.What is the value of the digit 1 in 61.839? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  15. 15.5.43 + 1.7 = ? (a) 7.03 (b) 5.6 (c) 7.13 (d) 7.23
  16. 16.6.86 + 8.5 = ? (a) 15.46 (b) 15.36 (c) 15.26 (d) 7.71
  17. 17.What is the value of the digit 3 in 42.376? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  18. 18.5.66 + 8.4 = ? (a) 13.96 (b) 14.16 (c) 14.06 (d) 6.5
  19. 19.Which is the smallest: 0.6, 0.521, 0.69, 0.086? (a) 0.6 (b) 0.521 (c) 0.69 (d) 0.086
  20. 20.Which is the smallest: 0.086, 0.314, 0.43, 0.4? (a) 0.086 (b) 0.314 (c) 0.43 (d) 0.4
  21. 21.Which is the smallest: 0.292, 0.013, 0.39, 0.3? (a) 0.292 (b) 0.013 (c) 0.39 (d) 0.3
  22. 22.6.37 + 6.2 = ? (a) 12.57 (b) 6.99 (c) 12.47 (d) 12.67
  23. 23.What is the value of the digit 9 in 16.984? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  24. 24.What is the value of the digit 7 in 14.327? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  25. 25.Which is the smallest: 0.7, 0.671, 0.031, 0.74? (a) 0.7 (b) 0.671 (c) 0.031 (d) 0.74
  26. 26.8.42 + 3.8 = ? (a) 12.32 (b) 12.12 (c) 8.8 (d) 12.22
  27. 27.Which is the smallest: 0.283, 0.3, 0.088, 0.33? (a) 0.283 (b) 0.3 (c) 0.088 (d) 0.33
  28. 28.Which is the greatest: 0.7, 0.672, 0.064, 0.78? (a) 0.7 (b) 0.672 (c) 0.064 (d) 0.78
  29. 29.What is the value of the digit 3 in 87.631? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  30. 30.Which is the greatest: 0.072, 0.3, 0.235, 0.36? (a) 0.072 (b) 0.3 (c) 0.235 (d) 0.36
  31. 31.What is the value of the digit 1 in 69.312? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  32. 32.2.24 + 8.8 = ? (a) 11.04 (b) 3.12 (c) 11.14 (d) 10.94
  33. 33.2.77 + 3.4 = ? (a) 6.07 (b) 6.27 (c) 6.17 (d) 3.11
  34. 34.5.71 + 8.5 = ? (a) 14.31 (b) 6.56 (c) 14.21 (d) 14.11
  35. 35.What is the value of the digit 9 in 28.695? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  36. 36.7.25 + 2.1 = ? (a) 9.25 (b) 7.46 (c) 9.35 (d) 9.45
  37. 37.Which is the greatest: 0.6, 0.058, 0.536, 0.62? (a) 0.6 (b) 0.058 (c) 0.536 (d) 0.62
  38. 38.Which is the greatest: 0.2, 0.25, 0.182, 0.045? (a) 0.2 (b) 0.25 (c) 0.182 (d) 0.045
  39. 39.Which is the smallest: 0.036, 0.65, 0.519, 0.6? (a) 0.036 (b) 0.65 (c) 0.519 (d) 0.6
  40. 40.5.11 + 3.6 = ? (a) 8.81 (b) 8.71 (c) 5.47 (d) 8.61

Answer key

  1. 0.05
  2. 9.74
  3. 4.86
  4. 0.29
  5. 0.061
  6. 7
  7. 0.66
  8. 8.85
  9. 15.93
  10. 11.32
  11. 17.57
  12. 10.94
  13. 0.018
  14. 1
  15. 7.13
  16. 15.36
  17. 0.3
  18. 14.06
  19. 0.086
  20. 0.086
  21. 0.013
  22. 12.57
  23. 0.9
  24. 0.007
  25. 0.031
  26. 12.22
  27. 0.088
  28. 0.78
  29. 0.03
  30. 0.36
  31. 0.01
  32. 11.04
  33. 6.17
  34. 14.21
  35. 0.09
  36. 9.35
  37. 0.62
  38. 0.25
  39. 0.036
  40. 8.71

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