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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 837 · 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. 1.3.96 + 5.1 = ? (a) 8.96 (b) 9.16 (c) 9.06 (d) 4.47
  2. 2.Which is the greatest: 0.043, 0.226, 0.3, 0.39? (a) 0.043 (b) 0.226 (c) 0.3 (d) 0.39
  3. 3.Which is the smallest: 0.053, 0.766, 0.8, 0.82? (a) 0.053 (b) 0.766 (c) 0.8 (d) 0.82
  4. 4.3.21 + 2.2 = ? (a) 5.41 (b) 5.51 (c) 3.43 (d) 5.31
  5. 5.4.55 + 9.1 = ? (a) 13.65 (b) 13.75 (c) 13.55 (d) 5.46
  6. 6.Which is the greatest: 0.6, 0.62, 0.056, 0.583? (a) 0.6 (b) 0.62 (c) 0.056 (d) 0.583
  7. 7.6.71 + 9.1 = ? (a) 15.81 (b) 15.71 (c) 15.91 (d) 7.62
  8. 8.8.03 + 3.3 = ? (a) 11.43 (b) 11.33 (c) 11.23 (d) 8.36
  9. 9.1.43 + 4.9 = ? (a) 6.23 (b) 6.43 (c) 6.33 (d) 1.92
  10. 10.Which is the greatest: 0.549, 0.031, 0.68, 0.6? (a) 0.549 (b) 0.031 (c) 0.68 (d) 0.6
  11. 11.Which is the smallest: 0.056, 0.236, 0.31, 0.3? (a) 0.056 (b) 0.236 (c) 0.31 (d) 0.3
  12. 12.4.98 + 9.5 = ? (a) 14.48 (b) 14.38 (c) 14.58 (d) 5.93
  13. 13.1.54 + 8.9 = ? (a) 2.43 (b) 10.54 (c) 10.44 (d) 10.34
  14. 14.9.21 + 3.2 = ? (a) 12.51 (b) 12.31 (c) 12.41 (d) 9.53
  15. 15.Which is the greatest: 0.42, 0.393, 0.4, 0.042? (a) 0.42 (b) 0.393 (c) 0.4 (d) 0.042
  16. 16.Which is the greatest: 0.086, 0.7, 0.71, 0.631? (a) 0.086 (b) 0.7 (c) 0.71 (d) 0.631
  17. 17.Which is the greatest: 0.83, 0.097, 0.753, 0.8? (a) 0.83 (b) 0.097 (c) 0.753 (d) 0.8
  18. 18.Which is the greatest: 0.89, 0.711, 0.8, 0.034? (a) 0.89 (b) 0.711 (c) 0.8 (d) 0.034
  19. 19.Which is the smallest: 0.7, 0.73, 0.063, 0.644? (a) 0.7 (b) 0.73 (c) 0.063 (d) 0.644
  20. 20.9.41 + 2.8 = ? (a) 12.31 (b) 12.21 (c) 12.11 (d) 9.69
  21. 21.3.37 + 4.9 = ? (a) 8.37 (b) 8.17 (c) 8.27 (d) 3.86
  22. 22.Which is the greatest: 0.2, 0.29, 0.116, 0.045? (a) 0.2 (b) 0.29 (c) 0.116 (d) 0.045
  23. 23.What is the value of the digit 6 in 49.765? (a) 0.006 (b) 0.6 (c) 6 (d) 0.06
  24. 24.8.21 + 2.9 = ? (a) 11.21 (b) 11.11 (c) 11.01 (d) 8.5
  25. 25.7.18 + 6.1 = ? (a) 7.79 (b) 13.28 (c) 13.18 (d) 13.38
  26. 26.Which is the greatest: 0.031, 0.651, 0.7, 0.78? (a) 0.031 (b) 0.651 (c) 0.7 (d) 0.78
  27. 27.What is the value of the digit 5 in 68.195? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  28. 28.7.91 + 1.8 = ? (a) 8.09 (b) 9.81 (c) 9.71 (d) 9.61
  29. 29.9.59 + 1.4 = ? (a) 10.99 (b) 10.89 (c) 11.09 (d) 9.73
  30. 30.Which is the greatest: 0.119, 0.24, 0.023, 0.2? (a) 0.119 (b) 0.24 (c) 0.023 (d) 0.2
  31. 31.What is the value of the digit 6 in 52.863? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  32. 32.4.45 + 4.1 = ? (a) 4.86 (b) 8.45 (c) 8.55 (d) 8.65
  33. 33.Which is the smallest: 0.557, 0.068, 0.66, 0.6? (a) 0.557 (b) 0.068 (c) 0.66 (d) 0.6
  34. 34.What is the value of the digit 8 in 84.135? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  35. 35.Which is the smallest: 0.055, 0.48, 0.4, 0.389? (a) 0.055 (b) 0.48 (c) 0.4 (d) 0.389
  36. 36.What is the value of the digit 1 in 61.932? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  37. 37.3.05 + 3.3 = ? (a) 6.45 (b) 6.25 (c) 3.38 (d) 6.35
  38. 38.What is the value of the digit 7 in 17.258? (a) 0.7 (b) 0.07 (c) 7 (d) 70
  39. 39.What is the value of the digit 7 in 96.758? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  40. 40.What is the value of the digit 4 in 79.834? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004

Answer key

  1. 9.06
  2. 0.39
  3. 0.053
  4. 5.41
  5. 13.65
  6. 0.62
  7. 15.81
  8. 11.33
  9. 6.33
  10. 0.68
  11. 0.056
  12. 14.48
  13. 10.44
  14. 12.41
  15. 0.42
  16. 0.71
  17. 0.83
  18. 0.89
  19. 0.063
  20. 12.21
  21. 8.27
  22. 0.29
  23. 0.06
  24. 11.11
  25. 13.28
  26. 0.78
  27. 0.005
  28. 9.71
  29. 10.99
  30. 0.24
  31. 0.06
  32. 8.55
  33. 0.068
  34. 80
  35. 0.055
  36. 1
  37. 6.35
  38. 7
  39. 0.7
  40. 0.004

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