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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 966 · 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. 1.2.49 + 3.9 = ? (a) 6.39 (b) 6.49 (c) 2.88 (d) 6.29
  2. 2.1.03 + 2.5 = ? (a) 1.28 (b) 3.63 (c) 3.53 (d) 3.43
  3. 3.What is the value of the digit 3 in 34.126? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  4. 4.Which is the greatest: 0.038, 0.271, 0.3, 0.33? (a) 0.038 (b) 0.271 (c) 0.3 (d) 0.33
  5. 5.8.11 + 7.1 = ? (a) 8.82 (b) 15.21 (c) 15.11 (d) 15.31
  6. 6.4.34 + 9.1 = ? (a) 13.34 (b) 13.44 (c) 5.25 (d) 13.54
  7. 7.6.09 + 4.3 = ? (a) 10.49 (b) 6.52 (c) 10.29 (d) 10.39
  8. 8.What is the value of the digit 6 in 65.147? (a) 6 (b) 0.6 (c) 0.06 (d) 60
  9. 9.Which is the greatest: 0.099, 0.155, 0.2, 0.25? (a) 0.099 (b) 0.155 (c) 0.2 (d) 0.25
  10. 10.What is the value of the digit 6 in 17.623? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  11. 11.Which is the greatest: 0.84, 0.715, 0.8, 0.016? (a) 0.84 (b) 0.715 (c) 0.8 (d) 0.016
  12. 12.4.52 + 9.2 = ? (a) 5.44 (b) 13.62 (c) 13.82 (d) 13.72
  13. 13.6.31 + 9.4 = ? (a) 15.81 (b) 15.61 (c) 15.71 (d) 7.25
  14. 14.1.61 + 9.8 = ? (a) 11.41 (b) 11.31 (c) 2.59 (d) 11.51
  15. 15.Which is the greatest: 0.062, 0.6, 0.68, 0.581? (a) 0.062 (b) 0.6 (c) 0.68 (d) 0.581
  16. 16.Which is the smallest: 0.49, 0.352, 0.4, 0.049? (a) 0.49 (b) 0.352 (c) 0.4 (d) 0.049
  17. 17.Which is the greatest: 0.095, 0.429, 0.5, 0.51? (a) 0.095 (b) 0.429 (c) 0.5 (d) 0.51
  18. 18.2.46 + 3.5 = ? (a) 5.86 (b) 2.81 (c) 5.96 (d) 6.06
  19. 19.8.14 + 4.8 = ? (a) 8.62 (b) 12.84 (c) 12.94 (d) 13.04
  20. 20.8.26 + 6.1 = ? (a) 8.87 (b) 14.36 (c) 14.26 (d) 14.46
  21. 21.Which is the smallest: 0.014, 0.24, 0.2, 0.112? (a) 0.014 (b) 0.24 (c) 0.2 (d) 0.112
  22. 22.1.71 + 7.6 = ? (a) 9.31 (b) 9.41 (c) 9.21 (d) 2.47
  23. 23.What is the value of the digit 8 in 31.298? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  24. 24.What is the value of the digit 9 in 19.387? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  25. 25.What is the value of the digit 5 in 47.156? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  26. 26.5.77 + 9.5 = ? (a) 15.17 (b) 15.37 (c) 15.27 (d) 6.72
  27. 27.What is the value of the digit 5 in 14.659? (a) 5 (b) 0.5 (c) 0.05 (d) 0.005
  28. 28.Which is the greatest: 0.6, 0.537, 0.64, 0.059? (a) 0.6 (b) 0.537 (c) 0.64 (d) 0.059
  29. 29.4.21 + 2.1 = ? (a) 6.21 (b) 6.31 (c) 6.41 (d) 4.42
  30. 30.Which is the smallest: 0.67, 0.555, 0.6, 0.026? (a) 0.67 (b) 0.555 (c) 0.6 (d) 0.026
  31. 31.What is the value of the digit 5 in 52.791? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  32. 32.What is the value of the digit 5 in 49.725? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  33. 33.Which is the smallest: 0.2, 0.092, 0.28, 0.133? (a) 0.2 (b) 0.092 (c) 0.28 (d) 0.133
  34. 34.Which is the greatest: 0.74, 0.7, 0.067, 0.648? (a) 0.74 (b) 0.7 (c) 0.067 (d) 0.648
  35. 35.What is the value of the digit 7 in 27.968? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  36. 36.Which is the smallest: 0.071, 0.3, 0.282, 0.31? (a) 0.071 (b) 0.3 (c) 0.282 (d) 0.31
  37. 37.9.29 + 1.5 = ? (a) 10.69 (b) 10.89 (c) 9.44 (d) 10.79
  38. 38.4.85 + 7.7 = ? (a) 12.65 (b) 12.45 (c) 12.55 (d) 5.62
  39. 39.What is the value of the digit 8 in 38.746? (a) 0.8 (b) 8 (c) 80 (d) 0.08
  40. 40.Which is the greatest: 0.51, 0.042, 0.487, 0.5? (a) 0.51 (b) 0.042 (c) 0.487 (d) 0.5

Answer key

  1. 6.39
  2. 3.53
  3. 30
  4. 0.33
  5. 15.21
  6. 13.44
  7. 10.39
  8. 60
  9. 0.25
  10. 0.6
  11. 0.84
  12. 13.72
  13. 15.71
  14. 11.41
  15. 0.68
  16. 0.049
  17. 0.51
  18. 5.96
  19. 12.94
  20. 14.36
  21. 0.014
  22. 9.31
  23. 0.008
  24. 9
  25. 0.05
  26. 15.27
  27. 0.05
  28. 0.64
  29. 6.31
  30. 0.026
  31. 50
  32. 0.005
  33. 0.092
  34. 0.74
  35. 7
  36. 0.071
  37. 10.79
  38. 12.55
  39. 8
  40. 0.51

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