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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 680 · 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.What is the value of the digit 2 in 71.258? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  2. 2.Which is the smallest: 0.31, 0.081, 0.245, 0.3? (a) 0.31 (b) 0.081 (c) 0.245 (d) 0.3
  3. 3.What is the value of the digit 2 in 94.512? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  4. 4.6.37 + 9.3 = ? (a) 15.67 (b) 15.77 (c) 15.57 (d) 7.3
  5. 5.3.59 + 4.3 = ? (a) 7.89 (b) 7.99 (c) 7.79 (d) 4.02
  6. 6.5.77 + 4.8 = ? (a) 6.25 (b) 10.67 (c) 10.57 (d) 10.47
  7. 7.What is the value of the digit 5 in 92.351? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  8. 8.What is the value of the digit 6 in 16.429? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  9. 9.2.57 + 1.7 = ? (a) 4.17 (b) 4.37 (c) 2.74 (d) 4.27
  10. 10.8.32 + 6.1 = ? (a) 14.52 (b) 14.32 (c) 14.42 (d) 8.93
  11. 11.What is the value of the digit 3 in 31.264? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  12. 12.Which is the smallest: 0.63, 0.529, 0.6, 0.098? (a) 0.63 (b) 0.529 (c) 0.6 (d) 0.098
  13. 13.Which is the greatest: 0.387, 0.44, 0.093, 0.4? (a) 0.387 (b) 0.44 (c) 0.093 (d) 0.4
  14. 14.What is the value of the digit 9 in 17.495? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  15. 15.6.59 + 6.3 = ? (a) 7.22 (b) 12.79 (c) 12.99 (d) 12.89
  16. 16.1.88 + 9.1 = ? (a) 10.98 (b) 2.79 (c) 10.88 (d) 11.08
  17. 17.Which is the smallest: 0.39, 0.079, 0.3, 0.291? (a) 0.39 (b) 0.079 (c) 0.3 (d) 0.291
  18. 18.7.99 + 8.2 = ? (a) 8.81 (b) 16.09 (c) 16.29 (d) 16.19
  19. 19.Which is the smallest: 0.099, 0.29, 0.2, 0.196? (a) 0.099 (b) 0.29 (c) 0.2 (d) 0.196
  20. 20.What is the value of the digit 4 in 34.598? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  21. 21.9.21 + 4.1 = ? (a) 13.21 (b) 13.31 (c) 9.62 (d) 13.41
  22. 22.9.87 + 1.4 = ? (a) 11.17 (b) 11.37 (c) 10.01 (d) 11.27
  23. 23.5.92 + 7.2 = ? (a) 13.02 (b) 13.22 (c) 6.64 (d) 13.12
  24. 24.6.26 + 7.4 = ? (a) 13.56 (b) 13.66 (c) 13.76 (d) 7
  25. 25.Which is the greatest: 0.061, 0.7, 0.77, 0.668? (a) 0.061 (b) 0.7 (c) 0.77 (d) 0.668
  26. 26.Which is the greatest: 0.741, 0.071, 0.8, 0.85? (a) 0.741 (b) 0.071 (c) 0.8 (d) 0.85
  27. 27.Which is the greatest: 0.58, 0.5, 0.495, 0.038? (a) 0.58 (b) 0.5 (c) 0.495 (d) 0.038
  28. 28.Which is the smallest: 0.067, 0.7, 0.75, 0.695? (a) 0.067 (b) 0.7 (c) 0.75 (d) 0.695
  29. 29.5.08 + 6.9 = ? (a) 11.88 (b) 5.77 (c) 11.98 (d) 12.08
  30. 30.What is the value of the digit 7 in 76.948? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  31. 31.Which is the smallest: 0.4, 0.014, 0.48, 0.392? (a) 0.4 (b) 0.014 (c) 0.48 (d) 0.392
  32. 32.Which is the greatest: 0.55, 0.052, 0.484, 0.5? (a) 0.55 (b) 0.052 (c) 0.484 (d) 0.5
  33. 33.Which is the greatest: 0.8, 0.795, 0.87, 0.038? (a) 0.8 (b) 0.795 (c) 0.87 (d) 0.038
  34. 34.What is the value of the digit 1 in 97.134? (a) 0.01 (b) 0.1 (c) 1 (d) 0.001
  35. 35.What is the value of the digit 9 in 73.984? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  36. 36.4.85 + 2.6 = ? (a) 7.45 (b) 7.55 (c) 7.35 (d) 5.11
  37. 37.Which is the greatest: 0.721, 0.8, 0.013, 0.83? (a) 0.721 (b) 0.8 (c) 0.013 (d) 0.83
  38. 38.6.98 + 1.9 = ? (a) 8.98 (b) 8.78 (c) 7.17 (d) 8.88
  39. 39.1.71 + 7.3 = ? (a) 2.44 (b) 8.91 (c) 9.11 (d) 9.01
  40. 40.5.35 + 7.2 = ? (a) 6.07 (b) 12.45 (c) 12.55 (d) 12.65

Answer key

  1. 0.2
  2. 0.081
  3. 0.002
  4. 15.67
  5. 7.89
  6. 10.57
  7. 0.05
  8. 6
  9. 4.27
  10. 14.42
  11. 30
  12. 0.098
  13. 0.44
  14. 0.09
  15. 12.89
  16. 10.98
  17. 0.079
  18. 16.19
  19. 0.099
  20. 4
  21. 13.31
  22. 11.27
  23. 13.12
  24. 13.66
  25. 0.77
  26. 0.85
  27. 0.58
  28. 0.067
  29. 11.98
  30. 70
  31. 0.014
  32. 0.55
  33. 0.87
  34. 0.1
  35. 0.9
  36. 7.45
  37. 0.83
  38. 8.88
  39. 9.01
  40. 12.55

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