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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 695 · 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. 1.2.57 + 2.3 = ? (a) 4.77 (b) 4.87 (c) 2.8 (d) 4.97
  2. 2.Which is the smallest: 0.39, 0.3, 0.067, 0.283? (a) 0.39 (b) 0.3 (c) 0.067 (d) 0.283
  3. 3.5.74 + 7.4 = ? (a) 6.48 (b) 13.14 (c) 13.24 (d) 13.04
  4. 4.2.88 + 7.5 = ? (a) 3.63 (b) 10.28 (c) 10.48 (d) 10.38
  5. 5.Which is the smallest: 0.086, 0.724, 0.88, 0.8? (a) 0.086 (b) 0.724 (c) 0.88 (d) 0.8
  6. 6.What is the value of the digit 2 in 12.384? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  7. 7.Which is the smallest: 0.172, 0.22, 0.2, 0.064? (a) 0.172 (b) 0.22 (c) 0.2 (d) 0.064
  8. 8.Which is the greatest: 0.016, 0.694, 0.7, 0.74? (a) 0.016 (b) 0.694 (c) 0.7 (d) 0.74
  9. 9.8.14 + 6.7 = ? (a) 14.74 (b) 8.81 (c) 14.84 (d) 14.94
  10. 10.Which is the smallest: 0.23, 0.2, 0.074, 0.147? (a) 0.23 (b) 0.2 (c) 0.074 (d) 0.147
  11. 11.Which is the smallest: 0.5, 0.081, 0.481, 0.57? (a) 0.5 (b) 0.081 (c) 0.481 (d) 0.57
  12. 12.What is the value of the digit 4 in 91.634? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  13. 13.9.14 + 1.3 = ? (a) 10.54 (b) 10.34 (c) 9.27 (d) 10.44
  14. 14.4.41 + 4.5 = ? (a) 4.86 (b) 8.91 (c) 8.81 (d) 9.01
  15. 15.1.82 + 3.1 = ? (a) 4.92 (b) 4.82 (c) 5.02 (d) 2.13
  16. 16.3.48 + 3.8 = ? (a) 7.38 (b) 3.86 (c) 7.18 (d) 7.28
  17. 17.What is the value of the digit 8 in 68.294? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  18. 18.What is the value of the digit 6 in 68.457? (a) 0.06 (b) 0.6 (c) 60 (d) 6
  19. 19.6.01 + 7.5 = ? (a) 13.51 (b) 13.41 (c) 13.61 (d) 6.76
  20. 20.Which is the smallest: 0.66, 0.511, 0.6, 0.033? (a) 0.66 (b) 0.511 (c) 0.6 (d) 0.033
  21. 21.Which is the greatest: 0.59, 0.5, 0.085, 0.423? (a) 0.59 (b) 0.5 (c) 0.085 (d) 0.423
  22. 22.Which is the greatest: 0.048, 0.147, 0.28, 0.2? (a) 0.048 (b) 0.147 (c) 0.28 (d) 0.2
  23. 23.Which is the smallest: 0.054, 0.81, 0.746, 0.8? (a) 0.054 (b) 0.81 (c) 0.746 (d) 0.8
  24. 24.8.37 + 2.5 = ? (a) 8.62 (b) 10.77 (c) 10.87 (d) 10.97
  25. 25.3.51 + 1.2 = ? (a) 3.63 (b) 4.71 (c) 4.81 (d) 4.61
  26. 26.Which is the greatest: 0.79, 0.7, 0.097, 0.673? (a) 0.79 (b) 0.7 (c) 0.097 (d) 0.673
  27. 27.5.13 + 6.8 = ? (a) 11.83 (b) 5.81 (c) 12.03 (d) 11.93
  28. 28.4.11 + 2.9 = ? (a) 7.11 (b) 6.91 (c) 7.01 (d) 4.4
  29. 29.2.01 + 5.1 = ? (a) 7.11 (b) 7.21 (c) 7.01 (d) 2.52
  30. 30.Which is the smallest: 0.134, 0.2, 0.037, 0.26? (a) 0.134 (b) 0.2 (c) 0.037 (d) 0.26
  31. 31.9.19 + 5.1 = ? (a) 9.7 (b) 14.19 (c) 14.29 (d) 14.39
  32. 32.Which is the smallest: 0.068, 0.4, 0.363, 0.43? (a) 0.068 (b) 0.4 (c) 0.363 (d) 0.43
  33. 33.Which is the smallest: 0.3, 0.39, 0.237, 0.027? (a) 0.3 (b) 0.39 (c) 0.237 (d) 0.027
  34. 34.Which is the greatest: 0.076, 0.322, 0.43, 0.4? (a) 0.076 (b) 0.322 (c) 0.43 (d) 0.4
  35. 35.What is the value of the digit 6 in 81.654? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  36. 36.9.17 + 8.4 = ? (a) 10.01 (b) 17.47 (c) 17.67 (d) 17.57
  37. 37.8.29 + 6.9 = ? (a) 15.09 (b) 15.19 (c) 8.98 (d) 15.29
  38. 38.Which is the greatest: 0.57, 0.073, 0.5, 0.415? (a) 0.57 (b) 0.073 (c) 0.5 (d) 0.415
  39. 39.What is the value of the digit 9 in 76.984? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  40. 40.What is the value of the digit 7 in 72.368? (a) 0.07 (b) 7 (c) 0.7 (d) 70

Answer key

  1. 4.87
  2. 0.067
  3. 13.14
  4. 10.38
  5. 0.086
  6. 2
  7. 0.064
  8. 0.74
  9. 14.84
  10. 0.074
  11. 0.081
  12. 0.004
  13. 10.44
  14. 8.91
  15. 4.92
  16. 7.28
  17. 8
  18. 60
  19. 13.51
  20. 0.033
  21. 0.59
  22. 0.28
  23. 0.054
  24. 10.87
  25. 4.71
  26. 0.79
  27. 11.93
  28. 7.01
  29. 7.11
  30. 0.037
  31. 14.29
  32. 0.068
  33. 0.027
  34. 0.43
  35. 0.6
  36. 17.57
  37. 15.19
  38. 0.57
  39. 0.9
  40. 70

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