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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 958 · 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. 1.9.52 + 3.7 = ? (a) 13.32 (b) 13.22 (c) 13.12 (d) 9.89
  2. 2.Which is the smallest: 0.134, 0.2, 0.014, 0.27? (a) 0.134 (b) 0.2 (c) 0.014 (d) 0.27
  3. 3.Which is the greatest: 0.256, 0.38, 0.021, 0.3? (a) 0.256 (b) 0.38 (c) 0.021 (d) 0.3
  4. 4.Which is the smallest: 0.39, 0.3, 0.015, 0.236? (a) 0.39 (b) 0.3 (c) 0.015 (d) 0.236
  5. 5.2.51 + 2.1 = ? (a) 2.72 (b) 4.51 (c) 4.61 (d) 4.71
  6. 6.2.21 + 1.2 = ? (a) 3.41 (b) 2.33 (c) 3.51 (d) 3.31
  7. 7.9.94 + 2.9 = ? (a) 12.74 (b) 12.94 (c) 12.84 (d) 10.23
  8. 8.What is the value of the digit 5 in 52.871? (a) 5 (b) 50 (c) 0.5 (d) 0.05
  9. 9.1.56 + 3.1 = ? (a) 4.56 (b) 4.66 (c) 1.87 (d) 4.76
  10. 10.What is the value of the digit 8 in 86.723? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  11. 11.7.03 + 2.4 = ? (a) 7.27 (b) 9.43 (c) 9.53 (d) 9.33
  12. 12.What is the value of the digit 5 in 35.198? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  13. 13.4.81 + 5.4 = ? (a) 5.35 (b) 10.31 (c) 10.21 (d) 10.11
  14. 14.What is the value of the digit 9 in 23.769? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  15. 15.What is the value of the digit 9 in 43.129? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  16. 16.3.51 + 1.3 = ? (a) 3.64 (b) 4.71 (c) 4.91 (d) 4.81
  17. 17.What is the value of the digit 8 in 82.731? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  18. 18.Which is the greatest: 0.185, 0.29, 0.055, 0.2? (a) 0.185 (b) 0.29 (c) 0.055 (d) 0.2
  19. 19.What is the value of the digit 8 in 14.758? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  20. 20.Which is the greatest: 0.589, 0.023, 0.6, 0.64? (a) 0.589 (b) 0.023 (c) 0.6 (d) 0.64
  21. 21.What is the value of the digit 6 in 67.932? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  22. 22.Which is the greatest: 0.537, 0.034, 0.6, 0.61? (a) 0.537 (b) 0.034 (c) 0.6 (d) 0.61
  23. 23.5.83 + 2.1 = ? (a) 6.04 (b) 8.03 (c) 7.93 (d) 7.83
  24. 24.What is the value of the digit 3 in 34.215? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  25. 25.4.51 + 2.2 = ? (a) 4.73 (b) 6.81 (c) 6.61 (d) 6.71
  26. 26.Which is the greatest: 0.31, 0.055, 0.213, 0.3? (a) 0.31 (b) 0.055 (c) 0.213 (d) 0.3
  27. 27.What is the value of the digit 7 in 96.327? (a) 7 (b) 0.07 (c) 0.007 (d) 0.7
  28. 28.4.61 + 4.7 = ? (a) 5.08 (b) 9.21 (c) 9.41 (d) 9.31
  29. 29.2.53 + 7.2 = ? (a) 9.83 (b) 9.63 (c) 9.73 (d) 3.25
  30. 30.What is the value of the digit 9 in 97.861? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  31. 31.8.21 + 4.7 = ? (a) 12.91 (b) 8.68 (c) 12.81 (d) 13.01
  32. 32.Which is the greatest: 0.775, 0.81, 0.088, 0.8? (a) 0.775 (b) 0.81 (c) 0.088 (d) 0.8
  33. 33.Which is the greatest: 0.61, 0.555, 0.032, 0.6? (a) 0.61 (b) 0.555 (c) 0.032 (d) 0.6
  34. 34.3.35 + 2.6 = ? (a) 6.05 (b) 5.85 (c) 5.95 (d) 3.61
  35. 35.5.66 + 3.1 = ? (a) 8.86 (b) 5.97 (c) 8.76 (d) 8.66
  36. 36.Which is the greatest: 0.5, 0.423, 0.59, 0.058? (a) 0.5 (b) 0.423 (c) 0.59 (d) 0.058
  37. 37.Which is the greatest: 0.61, 0.097, 0.561, 0.6? (a) 0.61 (b) 0.097 (c) 0.561 (d) 0.6
  38. 38.3.63 + 6.7 = ? (a) 4.3 (b) 10.23 (c) 10.33 (d) 10.43
  39. 39.7.41 + 3.7 = ? (a) 11.21 (b) 11.01 (c) 11.11 (d) 7.78
  40. 40.Which is the smallest: 0.79, 0.646, 0.7, 0.045? (a) 0.79 (b) 0.646 (c) 0.7 (d) 0.045

Answer key

  1. 13.22
  2. 0.014
  3. 0.38
  4. 0.015
  5. 4.61
  6. 3.41
  7. 12.84
  8. 50
  9. 4.66
  10. 80
  11. 9.43
  12. 5
  13. 10.21
  14. 0.009
  15. 0.009
  16. 4.81
  17. 80
  18. 0.29
  19. 0.008
  20. 0.64
  21. 60
  22. 0.61
  23. 7.93
  24. 30
  25. 6.71
  26. 0.31
  27. 0.007
  28. 9.31
  29. 9.73
  30. 90
  31. 12.91
  32. 0.81
  33. 0.61
  34. 5.95
  35. 8.76
  36. 0.59
  37. 0.61
  38. 10.33
  39. 11.11
  40. 0.045

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