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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 699 · 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. 1.4.56 + 4.3 = ? (a) 4.99 (b) 8.76 (c) 8.96 (d) 8.86
  2. 2.9.26 + 7.1 = ? (a) 16.26 (b) 16.46 (c) 16.36 (d) 9.97
  3. 3.4.88 + 8.4 = ? (a) 13.18 (b) 13.28 (c) 13.38 (d) 5.72
  4. 4.Which is the greatest: 0.075, 0.5, 0.53, 0.453? (a) 0.075 (b) 0.5 (c) 0.53 (d) 0.453
  5. 5.7.89 + 3.9 = ? (a) 11.69 (b) 8.28 (c) 11.79 (d) 11.89
  6. 6.7.31 + 8.5 = ? (a) 15.71 (b) 8.16 (c) 15.91 (d) 15.81
  7. 7.4.11 + 4.2 = ? (a) 4.53 (b) 8.41 (c) 8.21 (d) 8.31
  8. 8.3.56 + 6.9 = ? (a) 10.56 (b) 10.36 (c) 4.25 (d) 10.46
  9. 9.3.17 + 8.7 = ? (a) 4.04 (b) 11.77 (c) 11.97 (d) 11.87
  10. 10.What is the value of the digit 4 in 61.274? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  11. 11.8.35 + 1.1 = ? (a) 9.55 (b) 9.35 (c) 8.46 (d) 9.45
  12. 12.What is the value of the digit 5 in 54.863? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  13. 13.Which is the smallest: 0.5, 0.55, 0.023, 0.482? (a) 0.5 (b) 0.55 (c) 0.023 (d) 0.482
  14. 14.Which is the greatest: 0.685, 0.78, 0.017, 0.7? (a) 0.685 (b) 0.78 (c) 0.017 (d) 0.7
  15. 15.Which is the greatest: 0.7, 0.643, 0.79, 0.021? (a) 0.7 (b) 0.643 (c) 0.79 (d) 0.021
  16. 16.Which is the smallest: 0.8, 0.062, 0.737, 0.86? (a) 0.8 (b) 0.062 (c) 0.737 (d) 0.86
  17. 17.Which is the smallest: 0.086, 0.72, 0.7, 0.627? (a) 0.086 (b) 0.72 (c) 0.7 (d) 0.627
  18. 18.3.34 + 3.1 = ? (a) 6.54 (b) 6.44 (c) 6.34 (d) 3.65
  19. 19.Which is the smallest: 0.64, 0.096, 0.595, 0.6? (a) 0.64 (b) 0.096 (c) 0.595 (d) 0.6
  20. 20.Which is the smallest: 0.4, 0.49, 0.315, 0.011? (a) 0.4 (b) 0.49 (c) 0.315 (d) 0.011
  21. 21.Which is the greatest: 0.3, 0.221, 0.37, 0.012? (a) 0.3 (b) 0.221 (c) 0.37 (d) 0.012
  22. 22.2.86 + 6.1 = ? (a) 9.06 (b) 8.86 (c) 3.47 (d) 8.96
  23. 23.9.34 + 3.2 = ? (a) 12.44 (b) 9.66 (c) 12.64 (d) 12.54
  24. 24.What is the value of the digit 5 in 95.182? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  25. 25.7.41 + 9.5 = ? (a) 16.81 (b) 16.91 (c) 8.36 (d) 17.01
  26. 26.What is the value of the digit 1 in 97.261? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  27. 27.6.74 + 1.3 = ? (a) 7.94 (b) 6.87 (c) 8.14 (d) 8.04
  28. 28.2.51 + 1.9 = ? (a) 4.41 (b) 4.51 (c) 2.7 (d) 4.31
  29. 29.3.31 + 4.3 = ? (a) 7.61 (b) 7.71 (c) 7.51 (d) 3.74
  30. 30.What is the value of the digit 3 in 85.397? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  31. 31.3.68 + 2.4 = ? (a) 3.92 (b) 6.08 (c) 5.98 (d) 6.18
  32. 32.What is the value of the digit 5 in 74.685? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  33. 33.Which is the smallest: 0.6, 0.65, 0.059, 0.528? (a) 0.6 (b) 0.65 (c) 0.059 (d) 0.528
  34. 34.3.69 + 6.9 = ? (a) 4.38 (b) 10.69 (c) 10.49 (d) 10.59
  35. 35.Which is the greatest: 0.2, 0.29, 0.159, 0.086? (a) 0.2 (b) 0.29 (c) 0.159 (d) 0.086
  36. 36.Which is the smallest: 0.8, 0.86, 0.024, 0.751? (a) 0.8 (b) 0.86 (c) 0.024 (d) 0.751
  37. 37.Which is the greatest: 0.024, 0.37, 0.231, 0.3? (a) 0.024 (b) 0.37 (c) 0.231 (d) 0.3
  38. 38.Which is the smallest: 0.058, 0.89, 0.743, 0.8? (a) 0.058 (b) 0.89 (c) 0.743 (d) 0.8
  39. 39.4.61 + 2.3 = ? (a) 4.84 (b) 7.01 (c) 6.81 (d) 6.91
  40. 40.Which is the smallest: 0.3, 0.051, 0.265, 0.31? (a) 0.3 (b) 0.051 (c) 0.265 (d) 0.31

Answer key

  1. 8.86
  2. 16.36
  3. 13.28
  4. 0.53
  5. 11.79
  6. 15.81
  7. 8.31
  8. 10.46
  9. 11.87
  10. 0.004
  11. 9.45
  12. 50
  13. 0.023
  14. 0.78
  15. 0.79
  16. 0.062
  17. 0.086
  18. 6.44
  19. 0.096
  20. 0.011
  21. 0.37
  22. 8.96
  23. 12.54
  24. 5
  25. 16.91
  26. 0.001
  27. 8.04
  28. 4.41
  29. 7.61
  30. 0.3
  31. 6.08
  32. 0.005
  33. 0.059
  34. 10.59
  35. 0.29
  36. 0.024
  37. 0.37
  38. 0.058
  39. 6.91
  40. 0.051

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