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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 68 · 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. 1.5.78 + 5.2 = ? (a) 10.98 (b) 6.3 (c) 11.08 (d) 10.88
  2. 2.What is the value of the digit 7 in 87.416? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  3. 3.What is the value of the digit 8 in 82.961? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  4. 4.Which is the smallest: 0.028, 0.64, 0.561, 0.6? (a) 0.028 (b) 0.64 (c) 0.561 (d) 0.6
  5. 5.2.86 + 1.6 = ? (a) 4.46 (b) 3.02 (c) 4.36 (d) 4.56
  6. 6.9.26 + 5.6 = ? (a) 14.76 (b) 14.86 (c) 9.82 (d) 14.96
  7. 7.What is the value of the digit 2 in 54.827? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  8. 8.Which is the greatest: 0.3, 0.222, 0.31, 0.091? (a) 0.3 (b) 0.222 (c) 0.31 (d) 0.091
  9. 9.4.69 + 2.8 = ? (a) 7.39 (b) 4.97 (c) 7.49 (d) 7.59
  10. 10.Which is the greatest: 0.032, 0.76, 0.638, 0.7? (a) 0.032 (b) 0.76 (c) 0.638 (d) 0.7
  11. 11.8.05 + 4.6 = ? (a) 12.75 (b) 8.51 (c) 12.55 (d) 12.65
  12. 12.1.59 + 5.9 = ? (a) 2.18 (b) 7.59 (c) 7.39 (d) 7.49
  13. 13.Which is the greatest: 0.455, 0.53, 0.5, 0.089? (a) 0.455 (b) 0.53 (c) 0.5 (d) 0.089
  14. 14.2.19 + 4.7 = ? (a) 6.79 (b) 6.99 (c) 6.89 (d) 2.66
  15. 15.What is the value of the digit 5 in 42.859? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  16. 16.Which is the smallest: 0.617, 0.7, 0.031, 0.79? (a) 0.617 (b) 0.7 (c) 0.031 (d) 0.79
  17. 17.2.46 + 4.8 = ? (a) 7.26 (b) 7.16 (c) 7.36 (d) 2.94
  18. 18.What is the value of the digit 6 in 63.495? (a) 60 (b) 0.06 (c) 6 (d) 0.6
  19. 19.6.54 + 3.5 = ? (a) 6.89 (b) 10.14 (c) 9.94 (d) 10.04
  20. 20.6.84 + 8.7 = ? (a) 15.64 (b) 15.44 (c) 7.71 (d) 15.54
  21. 21.What is the value of the digit 7 in 42.157? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  22. 22.What is the value of the digit 4 in 26.943? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  23. 23.Which is the smallest: 0.71, 0.616, 0.7, 0.062? (a) 0.71 (b) 0.616 (c) 0.7 (d) 0.062
  24. 24.Which is the smallest: 0.67, 0.6, 0.079, 0.534? (a) 0.67 (b) 0.6 (c) 0.079 (d) 0.534
  25. 25.8.35 + 9.1 = ? (a) 9.26 (b) 17.35 (c) 17.45 (d) 17.55
  26. 26.What is the value of the digit 2 in 64.852? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  27. 27.What is the value of the digit 3 in 98.413? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  28. 28.5.11 + 6.1 = ? (a) 5.72 (b) 11.21 (c) 11.11 (d) 11.31
  29. 29.What is the value of the digit 3 in 85.396? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  30. 30.9.42 + 6.9 = ? (a) 10.11 (b) 16.42 (c) 16.32 (d) 16.22
  31. 31.Which is the greatest: 0.24, 0.131, 0.2, 0.098? (a) 0.24 (b) 0.131 (c) 0.2 (d) 0.098
  32. 32.3.08 + 4.5 = ? (a) 3.53 (b) 7.48 (c) 7.68 (d) 7.58
  33. 33.7.29 + 3.3 = ? (a) 10.59 (b) 10.69 (c) 10.49 (d) 7.62
  34. 34.What is the value of the digit 3 in 14.893? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  35. 35.6.31 + 3.2 = ? (a) 9.41 (b) 9.51 (c) 9.61 (d) 6.63
  36. 36.What is the value of the digit 2 in 19.823? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  37. 37.What is the value of the digit 7 in 67.539? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  38. 38.3.39 + 1.3 = ? (a) 4.69 (b) 4.59 (c) 4.79 (d) 3.52
  39. 39.What is the value of the digit 7 in 57.941? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  40. 40.3.94 + 8.5 = ? (a) 12.34 (b) 4.79 (c) 12.44 (d) 12.54

Answer key

  1. 10.98
  2. 7
  3. 80
  4. 0.028
  5. 4.46
  6. 14.86
  7. 0.02
  8. 0.31
  9. 7.49
  10. 0.76
  11. 12.65
  12. 7.49
  13. 0.53
  14. 6.89
  15. 0.05
  16. 0.031
  17. 7.26
  18. 60
  19. 10.04
  20. 15.54
  21. 0.007
  22. 0.04
  23. 0.062
  24. 0.079
  25. 17.45
  26. 0.002
  27. 0.003
  28. 11.21
  29. 0.3
  30. 16.32
  31. 0.24
  32. 7.58
  33. 10.59
  34. 0.003
  35. 9.51
  36. 0.02
  37. 7
  38. 4.69
  39. 7
  40. 12.44

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