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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 450 · 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.Which is the greatest: 0.8, 0.786, 0.012, 0.84? (a) 0.8 (b) 0.786 (c) 0.012 (d) 0.84
  2. 2.Which is the smallest: 0.795, 0.035, 0.8, 0.82? (a) 0.795 (b) 0.035 (c) 0.8 (d) 0.82
  3. 3.1.55 + 7.1 = ? (a) 8.75 (b) 8.55 (c) 2.26 (d) 8.65
  4. 4.What is the value of the digit 3 in 36.918? (a) 30 (b) 0.3 (c) 3 (d) 0.03
  5. 5.9.66 + 2.1 = ? (a) 11.86 (b) 11.76 (c) 11.66 (d) 9.87
  6. 6.What is the value of the digit 4 in 64.581? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  7. 7.What is the value of the digit 4 in 52.498? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  8. 8.6.15 + 7.4 = ? (a) 13.45 (b) 13.55 (c) 13.65 (d) 6.89
  9. 9.What is the value of the digit 8 in 46.318? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  10. 10.Which is the greatest: 0.48, 0.4, 0.098, 0.359? (a) 0.48 (b) 0.4 (c) 0.098 (d) 0.359
  11. 11.Which is the greatest: 0.2, 0.24, 0.082, 0.137? (a) 0.2 (b) 0.24 (c) 0.082 (d) 0.137
  12. 12.1.65 + 2.3 = ? (a) 4.05 (b) 3.95 (c) 1.88 (d) 3.85
  13. 13.7.66 + 4.1 = ? (a) 11.86 (b) 11.66 (c) 8.07 (d) 11.76
  14. 14.5.64 + 3.3 = ? (a) 9.04 (b) 5.97 (c) 8.84 (d) 8.94
  15. 15.What is the value of the digit 9 in 85.913? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  16. 16.Which is the smallest: 0.8, 0.82, 0.789, 0.072? (a) 0.8 (b) 0.82 (c) 0.789 (d) 0.072
  17. 17.Which is the greatest: 0.244, 0.32, 0.3, 0.022? (a) 0.244 (b) 0.32 (c) 0.3 (d) 0.022
  18. 18.What is the value of the digit 4 in 82.764? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  19. 19.9.11 + 2.3 = ? (a) 9.34 (b) 11.51 (c) 11.41 (d) 11.31
  20. 20.What is the value of the digit 6 in 81.672? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  21. 21.1.11 + 8.1 = ? (a) 1.92 (b) 9.21 (c) 9.31 (d) 9.11
  22. 22.Which is the smallest: 0.689, 0.7, 0.026, 0.71? (a) 0.689 (b) 0.7 (c) 0.026 (d) 0.71
  23. 23.What is the value of the digit 1 in 97.153? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  24. 24.What is the value of the digit 7 in 38.751? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  25. 25.Which is the smallest: 0.44, 0.4, 0.347, 0.021? (a) 0.44 (b) 0.4 (c) 0.347 (d) 0.021
  26. 26.What is the value of the digit 1 in 67.158? (a) 1 (b) 0.1 (c) 0.001 (d) 0.01
  27. 27.Which is the greatest: 0.058, 0.38, 0.3, 0.269? (a) 0.058 (b) 0.38 (c) 0.3 (d) 0.269
  28. 28.Which is the smallest: 0.7, 0.676, 0.043, 0.73? (a) 0.7 (b) 0.676 (c) 0.043 (d) 0.73
  29. 29.4.74 + 4.1 = ? (a) 8.74 (b) 5.15 (c) 8.94 (d) 8.84
  30. 30.What is the value of the digit 5 in 54.862? (a) 5 (b) 50 (c) 0.5 (d) 0.05
  31. 31.What is the value of the digit 9 in 92.731? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  32. 32.What is the value of the digit 6 in 56.219? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  33. 33.2.48 + 3.6 = ? (a) 5.98 (b) 6.18 (c) 6.08 (d) 2.84
  34. 34.Which is the greatest: 0.3, 0.281, 0.31, 0.065? (a) 0.3 (b) 0.281 (c) 0.31 (d) 0.065
  35. 35.Which is the greatest: 0.81, 0.761, 0.8, 0.023? (a) 0.81 (b) 0.761 (c) 0.8 (d) 0.023
  36. 36.What is the value of the digit 4 in 43.286? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  37. 37.What is the value of the digit 6 in 46.725? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  38. 38.9.91 + 3.7 = ? (a) 13.61 (b) 13.51 (c) 10.28 (d) 13.71
  39. 39.What is the value of the digit 9 in 56.984? (a) 0.09 (b) 0.009 (c) 9 (d) 0.9
  40. 40.Which is the greatest: 0.22, 0.129, 0.2, 0.027? (a) 0.22 (b) 0.129 (c) 0.2 (d) 0.027

Answer key

  1. 0.84
  2. 0.035
  3. 8.65
  4. 30
  5. 11.76
  6. 4
  7. 0.4
  8. 13.55
  9. 0.008
  10. 0.48
  11. 0.24
  12. 3.95
  13. 11.76
  14. 8.94
  15. 0.9
  16. 0.072
  17. 0.32
  18. 0.004
  19. 11.41
  20. 0.6
  21. 9.21
  22. 0.026
  23. 0.1
  24. 0.7
  25. 0.021
  26. 0.1
  27. 0.38
  28. 0.043
  29. 8.84
  30. 50
  31. 90
  32. 6
  33. 6.08
  34. 0.31
  35. 0.81
  36. 40
  37. 6
  38. 13.61
  39. 0.9
  40. 0.22

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