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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 169 · 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. 1.3.04 + 2.2 = ? (a) 3.26 (b) 5.34 (c) 5.24 (d) 5.14
  2. 2.What is the value of the digit 3 in 69.231? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  3. 3.Which is the greatest: 0.081, 0.31, 0.3, 0.298? (a) 0.081 (b) 0.31 (c) 0.3 (d) 0.298
  4. 4.2.01 + 6.6 = ? (a) 8.71 (b) 8.61 (c) 8.51 (d) 2.67
  5. 5.What is the value of the digit 2 in 35.298? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  6. 6.5.83 + 7.8 = ? (a) 13.73 (b) 13.53 (c) 13.63 (d) 6.61
  7. 7.5.44 + 9.4 = ? (a) 6.38 (b) 14.74 (c) 14.94 (d) 14.84
  8. 8.What is the value of the digit 1 in 17.359? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  9. 9.2.01 + 8.1 = ? (a) 10.01 (b) 10.11 (c) 2.82 (d) 10.21
  10. 10.4.24 + 3.5 = ? (a) 7.74 (b) 7.84 (c) 7.64 (d) 4.59
  11. 11.Which is the greatest: 0.539, 0.062, 0.6, 0.64? (a) 0.539 (b) 0.062 (c) 0.6 (d) 0.64
  12. 12.4.23 + 1.7 = ? (a) 4.4 (b) 5.83 (c) 5.93 (d) 6.03
  13. 13.Which is the greatest: 0.7, 0.76, 0.655, 0.021? (a) 0.7 (b) 0.76 (c) 0.655 (d) 0.021
  14. 14.8.55 + 3.8 = ? (a) 12.35 (b) 12.45 (c) 8.93 (d) 12.25
  15. 15.Which is the greatest: 0.013, 0.5, 0.53, 0.467? (a) 0.013 (b) 0.5 (c) 0.53 (d) 0.467
  16. 16.7.29 + 3.9 = ? (a) 7.68 (b) 11.29 (c) 11.09 (d) 11.19
  17. 17.Which is the greatest: 0.054, 0.7, 0.73, 0.673? (a) 0.054 (b) 0.7 (c) 0.73 (d) 0.673
  18. 18.Which is the greatest: 0.6, 0.544, 0.61, 0.033? (a) 0.6 (b) 0.544 (c) 0.61 (d) 0.033
  19. 19.What is the value of the digit 9 in 49.517? (a) 0.9 (b) 9 (c) 90 (d) 0.09
  20. 20.Which is the greatest: 0.371, 0.024, 0.4, 0.41? (a) 0.371 (b) 0.024 (c) 0.4 (d) 0.41
  21. 21.7.83 + 7.5 = ? (a) 15.43 (b) 15.33 (c) 15.23 (d) 8.58
  22. 22.Which is the smallest: 0.52, 0.021, 0.478, 0.5? (a) 0.52 (b) 0.021 (c) 0.478 (d) 0.5
  23. 23.Which is the smallest: 0.059, 0.278, 0.37, 0.3? (a) 0.059 (b) 0.278 (c) 0.37 (d) 0.3
  24. 24.What is the value of the digit 3 in 26.357? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  25. 25.Which is the greatest: 0.236, 0.35, 0.3, 0.014? (a) 0.236 (b) 0.35 (c) 0.3 (d) 0.014
  26. 26.Which is the smallest: 0.224, 0.055, 0.3, 0.31? (a) 0.224 (b) 0.055 (c) 0.3 (d) 0.31
  27. 27.What is the value of the digit 3 in 67.138? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  28. 28.What is the value of the digit 9 in 39.425? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  29. 29.What is the value of the digit 9 in 63.429? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  30. 30.6.86 + 8.1 = ? (a) 14.86 (b) 15.06 (c) 14.96 (d) 7.67
  31. 31.1.26 + 3.6 = ? (a) 4.76 (b) 4.96 (c) 4.86 (d) 1.62
  32. 32.Which is the greatest: 0.83, 0.8, 0.715, 0.013? (a) 0.83 (b) 0.8 (c) 0.715 (d) 0.013
  33. 33.Which is the smallest: 0.138, 0.2, 0.28, 0.015? (a) 0.138 (b) 0.2 (c) 0.28 (d) 0.015
  34. 34.What is the value of the digit 3 in 63.982? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  35. 35.What is the value of the digit 5 in 86.517? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  36. 36.What is the value of the digit 1 in 53.421? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  37. 37.6.75 + 1.6 = ? (a) 6.91 (b) 8.35 (c) 8.25 (d) 8.45
  38. 38.Which is the smallest: 0.724, 0.052, 0.8, 0.87? (a) 0.724 (b) 0.052 (c) 0.8 (d) 0.87
  39. 39.8.31 + 4.1 = ? (a) 8.72 (b) 12.41 (c) 12.31 (d) 12.51
  40. 40.Which is the smallest: 0.79, 0.033, 0.686, 0.7? (a) 0.79 (b) 0.033 (c) 0.686 (d) 0.7

Answer key

  1. 5.24
  2. 0.03
  3. 0.31
  4. 8.61
  5. 0.2
  6. 13.63
  7. 14.84
  8. 10
  9. 10.11
  10. 7.74
  11. 0.64
  12. 5.93
  13. 0.76
  14. 12.35
  15. 0.53
  16. 11.19
  17. 0.73
  18. 0.61
  19. 9
  20. 0.41
  21. 15.33
  22. 0.021
  23. 0.059
  24. 0.3
  25. 0.35
  26. 0.055
  27. 0.03
  28. 9
  29. 0.009
  30. 14.96
  31. 4.86
  32. 0.83
  33. 0.015
  34. 3
  35. 0.5
  36. 0.001
  37. 8.35
  38. 0.052
  39. 12.41
  40. 0.033

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