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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 19 · 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. 1.5.92 + 6.1 = ? (a) 12.12 (b) 6.53 (c) 11.92 (d) 12.02
  2. 2.What is the value of the digit 5 in 42.153? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  3. 3.Which is the smallest: 0.3, 0.267, 0.065, 0.35? (a) 0.3 (b) 0.267 (c) 0.065 (d) 0.35
  4. 4.What is the value of the digit 5 in 16.945? (a) 0.05 (b) 0.005 (c) 0.5 (d) 5
  5. 5.What is the value of the digit 3 in 52.378? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  6. 6.What is the value of the digit 1 in 31.794? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  7. 7.Which is the greatest: 0.221, 0.3, 0.36, 0.091? (a) 0.221 (b) 0.3 (c) 0.36 (d) 0.091
  8. 8.1.11 + 5.6 = ? (a) 1.67 (b) 6.81 (c) 6.61 (d) 6.71
  9. 9.5.41 + 3.9 = ? (a) 9.41 (b) 9.21 (c) 9.31 (d) 5.8
  10. 10.Which is the greatest: 0.139, 0.2, 0.27, 0.097? (a) 0.139 (b) 0.2 (c) 0.27 (d) 0.097
  11. 11.Which is the smallest: 0.4, 0.42, 0.341, 0.084? (a) 0.4 (b) 0.42 (c) 0.341 (d) 0.084
  12. 12.7.79 + 2.9 = ? (a) 8.08 (b) 10.69 (c) 10.79 (d) 10.59
  13. 13.What is the value of the digit 2 in 48.921? (a) 0.002 (b) 0.2 (c) 0.02 (d) 2
  14. 14.Which is the greatest: 0.712, 0.081, 0.81, 0.8? (a) 0.712 (b) 0.081 (c) 0.81 (d) 0.8
  15. 15.1.41 + 2.6 = ? (a) 4.11 (b) 4.01 (c) 1.67 (d) 3.91
  16. 16.What is the value of the digit 8 in 27.648? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  17. 17.3.97 + 3.1 = ? (a) 6.97 (b) 4.28 (c) 7.07 (d) 7.17
  18. 18.Which is the greatest: 0.089, 0.694, 0.7, 0.76? (a) 0.089 (b) 0.694 (c) 0.7 (d) 0.76
  19. 19.5.79 + 7.3 = ? (a) 6.52 (b) 13.09 (c) 13.19 (d) 12.99
  20. 20.What is the value of the digit 5 in 45.132? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  21. 21.Which is the smallest: 0.393, 0.47, 0.4, 0.052? (a) 0.393 (b) 0.47 (c) 0.4 (d) 0.052
  22. 22.Which is the smallest: 0.365, 0.043, 0.42, 0.4? (a) 0.365 (b) 0.043 (c) 0.42 (d) 0.4
  23. 23.6.67 + 3.8 = ? (a) 10.37 (b) 10.57 (c) 7.05 (d) 10.47
  24. 24.What is the value of the digit 7 in 73.412? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  25. 25.5.73 + 8.3 = ? (a) 13.93 (b) 14.03 (c) 14.13 (d) 6.56
  26. 26.Which is the greatest: 0.295, 0.056, 0.32, 0.3? (a) 0.295 (b) 0.056 (c) 0.32 (d) 0.3
  27. 27.9.07 + 1.8 = ? (a) 9.25 (b) 10.97 (c) 10.87 (d) 10.77
  28. 28.Which is the smallest: 0.67, 0.036, 0.569, 0.6? (a) 0.67 (b) 0.036 (c) 0.569 (d) 0.6
  29. 29.Which is the greatest: 0.051, 0.83, 0.779, 0.8? (a) 0.051 (b) 0.83 (c) 0.779 (d) 0.8
  30. 30.Which is the greatest: 0.046, 0.87, 0.712, 0.8? (a) 0.046 (b) 0.87 (c) 0.712 (d) 0.8
  31. 31.6.45 + 1.9 = ? (a) 6.64 (b) 8.45 (c) 8.35 (d) 8.25
  32. 32.Which is the smallest: 0.4, 0.319, 0.015, 0.42? (a) 0.4 (b) 0.319 (c) 0.015 (d) 0.42
  33. 33.9.95 + 8.4 = ? (a) 10.79 (b) 18.25 (c) 18.35 (d) 18.45
  34. 34.5.61 + 8.2 = ? (a) 13.91 (b) 13.71 (c) 13.81 (d) 6.43
  35. 35.What is the value of the digit 6 in 69.132? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  36. 36.Which is the greatest: 0.2, 0.165, 0.27, 0.034? (a) 0.2 (b) 0.165 (c) 0.27 (d) 0.034
  37. 37.What is the value of the digit 2 in 96.182? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  38. 38.Which is the greatest: 0.094, 0.2, 0.28, 0.112? (a) 0.094 (b) 0.2 (c) 0.28 (d) 0.112
  39. 39.What is the value of the digit 7 in 73.259? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  40. 40.What is the value of the digit 8 in 61.438? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08

Answer key

  1. 12.02
  2. 0.05
  3. 0.065
  4. 0.005
  5. 0.3
  6. 1
  7. 0.36
  8. 6.71
  9. 9.31
  10. 0.27
  11. 0.084
  12. 10.69
  13. 0.02
  14. 0.81
  15. 4.01
  16. 0.008
  17. 7.07
  18. 0.76
  19. 13.09
  20. 5
  21. 0.052
  22. 0.043
  23. 10.47
  24. 70
  25. 14.03
  26. 0.32
  27. 10.87
  28. 0.036
  29. 0.83
  30. 0.87
  31. 8.35
  32. 0.015
  33. 18.35
  34. 13.81
  35. 60
  36. 0.27
  37. 0.002
  38. 0.28
  39. 70
  40. 0.008

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