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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 735 · 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: 0.491, 0.51, 0.026, 0.5? (a) 0.491 (b) 0.51 (c) 0.026 (d) 0.5
  2. 2.2.09 + 4.7 = ? (a) 6.69 (b) 2.56 (c) 6.89 (d) 6.79
  3. 3.1.78 + 6.9 = ? (a) 8.58 (b) 8.78 (c) 8.68 (d) 2.47
  4. 4.What is the value of the digit 5 in 34.215? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  5. 5.What is the value of the digit 1 in 39.471? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  6. 6.1.16 + 8.1 = ? (a) 9.16 (b) 9.26 (c) 9.36 (d) 1.97
  7. 7.6.74 + 7.8 = ? (a) 7.52 (b) 14.54 (c) 14.64 (d) 14.44
  8. 8.6.94 + 8.9 = ? (a) 7.83 (b) 15.74 (c) 15.94 (d) 15.84
  9. 9.What is the value of the digit 5 in 39.542? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  10. 10.What is the value of the digit 7 in 82.374? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  11. 11.What is the value of the digit 7 in 37.168? (a) 0.7 (b) 7 (c) 0.07 (d) 70
  12. 12.7.24 + 2.4 = ? (a) 7.48 (b) 9.54 (c) 9.64 (d) 9.74
  13. 13.What is the value of the digit 3 in 72.563? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  14. 14.6.75 + 2.1 = ? (a) 8.85 (b) 8.95 (c) 8.75 (d) 6.96
  15. 15.What is the value of the digit 3 in 31.428? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  16. 16.9.96 + 7.3 = ? (a) 17.26 (b) 17.16 (c) 17.36 (d) 10.69
  17. 17.1.68 + 6.5 = ? (a) 2.33 (b) 8.08 (c) 8.28 (d) 8.18
  18. 18.6.81 + 7.7 = ? (a) 7.58 (b) 14.41 (c) 14.51 (d) 14.61
  19. 19.2.93 + 9.2 = ? (a) 12.13 (b) 12.23 (c) 3.85 (d) 12.03
  20. 20.2.38 + 5.1 = ? (a) 7.38 (b) 7.58 (c) 2.89 (d) 7.48
  21. 21.What is the value of the digit 4 in 45.187? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  22. 22.Which is the greatest: 0.035, 0.733, 0.8, 0.82? (a) 0.035 (b) 0.733 (c) 0.8 (d) 0.82
  23. 23.Which is the smallest: 0.771, 0.81, 0.8, 0.064? (a) 0.771 (b) 0.81 (c) 0.8 (d) 0.064
  24. 24.What is the value of the digit 8 in 82.653? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  25. 25.Which is the greatest: 0.099, 0.535, 0.6, 0.69? (a) 0.099 (b) 0.535 (c) 0.6 (d) 0.69
  26. 26.What is the value of the digit 3 in 13.728? (a) 30 (b) 0.3 (c) 0.03 (d) 3
  27. 27.What is the value of the digit 7 in 53.278? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  28. 28.6.81 + 1.2 = ? (a) 8.11 (b) 6.93 (c) 7.91 (d) 8.01
  29. 29.7.24 + 2.2 = ? (a) 9.34 (b) 9.54 (c) 7.46 (d) 9.44
  30. 30.6.28 + 1.6 = ? (a) 7.98 (b) 6.44 (c) 7.88 (d) 7.78
  31. 31.9.76 + 8.3 = ? (a) 17.96 (b) 18.06 (c) 18.16 (d) 10.59
  32. 32.What is the value of the digit 4 in 42.798? (a) 4 (b) 40 (c) 0.4 (d) 0.04
  33. 33.Which is the greatest: 0.151, 0.2, 0.27, 0.038? (a) 0.151 (b) 0.2 (c) 0.27 (d) 0.038
  34. 34.7.81 + 5.1 = ? (a) 12.81 (b) 12.91 (c) 13.01 (d) 8.32
  35. 35.What is the value of the digit 8 in 42.768? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  36. 36.Which is the smallest: 0.069, 0.572, 0.6, 0.61? (a) 0.069 (b) 0.572 (c) 0.6 (d) 0.61
  37. 37.What is the value of the digit 4 in 51.842? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  38. 38.2.42 + 5.8 = ? (a) 8.22 (b) 8.32 (c) 3 (d) 8.12
  39. 39.Which is the greatest: 0.82, 0.8, 0.065, 0.744? (a) 0.82 (b) 0.8 (c) 0.065 (d) 0.744
  40. 40.9.13 + 5.3 = ? (a) 14.43 (b) 14.53 (c) 14.33 (d) 9.66

Answer key

  1. 0.51
  2. 6.79
  3. 8.68
  4. 0.005
  5. 0.001
  6. 9.26
  7. 14.54
  8. 15.84
  9. 0.5
  10. 0.07
  11. 7
  12. 9.64
  13. 0.003
  14. 8.85
  15. 30
  16. 17.26
  17. 8.18
  18. 14.51
  19. 12.13
  20. 7.48
  21. 40
  22. 0.82
  23. 0.064
  24. 80
  25. 0.69
  26. 3
  27. 0.07
  28. 8.01
  29. 9.44
  30. 7.88
  31. 18.06
  32. 40
  33. 0.27
  34. 12.91
  35. 0.008
  36. 0.069
  37. 0.04
  38. 8.22
  39. 0.82
  40. 14.43

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