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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 142 · 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: 0.064, 0.491, 0.5, 0.57? (a) 0.064 (b) 0.491 (c) 0.5 (d) 0.57
  2. 2.7.95 + 1.2 = ? (a) 9.05 (b) 9.15 (c) 9.25 (d) 8.07
  3. 3.9.31 + 9.2 = ? (a) 18.41 (b) 18.51 (c) 10.23 (d) 18.61
  4. 4.1.77 + 4.8 = ? (a) 6.47 (b) 6.57 (c) 6.67 (d) 2.25
  5. 5.What is the value of the digit 1 in 15.269? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  6. 6.Which is the greatest: 0.612, 0.72, 0.011, 0.7? (a) 0.612 (b) 0.72 (c) 0.011 (d) 0.7
  7. 7.4.73 + 4.1 = ? (a) 8.73 (b) 8.93 (c) 5.14 (d) 8.83
  8. 8.Which is the smallest: 0.525, 0.6, 0.099, 0.62? (a) 0.525 (b) 0.6 (c) 0.099 (d) 0.62
  9. 9.6.48 + 6.6 = ? (a) 12.98 (b) 13.18 (c) 13.08 (d) 7.14
  10. 10.7.06 + 3.1 = ? (a) 10.06 (b) 10.26 (c) 10.16 (d) 7.37
  11. 11.7.73 + 1.5 = ? (a) 9.33 (b) 7.88 (c) 9.13 (d) 9.23
  12. 12.Which is the smallest: 0.036, 0.3, 0.251, 0.31? (a) 0.036 (b) 0.3 (c) 0.251 (d) 0.31
  13. 13.7.28 + 8.1 = ? (a) 15.48 (b) 15.28 (c) 15.38 (d) 8.09
  14. 14.Which is the greatest: 0.6, 0.097, 0.514, 0.66? (a) 0.6 (b) 0.097 (c) 0.514 (d) 0.66
  15. 15.What is the value of the digit 5 in 24.586? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  16. 16.What is the value of the digit 9 in 32.948? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  17. 17.What is the value of the digit 3 in 36.241? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  18. 18.What is the value of the digit 6 in 71.964? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  19. 19.What is the value of the digit 4 in 14.678? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  20. 20.What is the value of the digit 7 in 63.751? (a) 0.07 (b) 0.007 (c) 0.7 (d) 7
  21. 21.What is the value of the digit 8 in 27.485? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  22. 22.What is the value of the digit 9 in 94.385? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  23. 23.3.17 + 4.4 = ? (a) 7.67 (b) 7.57 (c) 7.47 (d) 3.61
  24. 24.5.43 + 3.1 = ? (a) 5.74 (b) 8.43 (c) 8.53 (d) 8.63
  25. 25.Which is the greatest: 0.3, 0.046, 0.39, 0.218? (a) 0.3 (b) 0.046 (c) 0.39 (d) 0.218
  26. 26.What is the value of the digit 9 in 98.534? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  27. 27.What is the value of the digit 7 in 45.967? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  28. 28.2.86 + 6.7 = ? (a) 3.53 (b) 9.46 (c) 9.56 (d) 9.66
  29. 29.Which is the smallest: 0.086, 0.153, 0.2, 0.25? (a) 0.086 (b) 0.153 (c) 0.2 (d) 0.25
  30. 30.1.61 + 3.7 = ? (a) 5.21 (b) 1.98 (c) 5.41 (d) 5.31
  31. 31.What is the value of the digit 7 in 85.497? (a) 7 (b) 0.007 (c) 0.7 (d) 0.07
  32. 32.Which is the smallest: 0.78, 0.684, 0.017, 0.7? (a) 0.78 (b) 0.684 (c) 0.017 (d) 0.7
  33. 33.What is the value of the digit 8 in 68.914? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  34. 34.Which is the smallest: 0.715, 0.86, 0.8, 0.052? (a) 0.715 (b) 0.86 (c) 0.8 (d) 0.052
  35. 35.What is the value of the digit 4 in 79.624? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  36. 36.Which is the smallest: 0.324, 0.4, 0.024, 0.49? (a) 0.324 (b) 0.4 (c) 0.024 (d) 0.49
  37. 37.2.04 + 4.1 = ? (a) 6.04 (b) 2.45 (c) 6.24 (d) 6.14
  38. 38.4.69 + 6.1 = ? (a) 5.3 (b) 10.89 (c) 10.69 (d) 10.79
  39. 39.Which is the greatest: 0.474, 0.062, 0.5, 0.55? (a) 0.474 (b) 0.062 (c) 0.5 (d) 0.55
  40. 40.Which is the greatest: 0.71, 0.028, 0.7, 0.627? (a) 0.71 (b) 0.028 (c) 0.7 (d) 0.627

Answer key

  1. 0.57
  2. 9.15
  3. 18.51
  4. 6.57
  5. 10
  6. 0.72
  7. 8.83
  8. 0.099
  9. 13.08
  10. 10.16
  11. 9.23
  12. 0.036
  13. 15.38
  14. 0.66
  15. 0.5
  16. 0.9
  17. 30
  18. 0.06
  19. 4
  20. 0.7
  21. 0.08
  22. 90
  23. 7.57
  24. 8.53
  25. 0.39
  26. 90
  27. 0.007
  28. 9.56
  29. 0.086
  30. 5.31
  31. 0.007
  32. 0.017
  33. 8
  34. 0.052
  35. 0.004
  36. 0.024
  37. 6.14
  38. 10.79
  39. 0.55
  40. 0.71

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