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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 275 · 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: 0.046, 0.358, 0.44, 0.4? (a) 0.046 (b) 0.358 (c) 0.44 (d) 0.4
  2. 2.What is the value of the digit 7 in 31.567? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  3. 3.Which is the smallest: 0.24, 0.2, 0.027, 0.187? (a) 0.24 (b) 0.2 (c) 0.027 (d) 0.187
  4. 4.What is the value of the digit 5 in 25.648? (a) 50 (b) 0.05 (c) 0.5 (d) 5
  5. 5.2.68 + 5.9 = ? (a) 3.27 (b) 8.58 (c) 8.48 (d) 8.68
  6. 6.8.59 + 8.9 = ? (a) 17.49 (b) 17.39 (c) 17.59 (d) 9.48
  7. 7.4.51 + 4.5 = ? (a) 9.11 (b) 8.91 (c) 4.96 (d) 9.01
  8. 8.Which is the smallest: 0.331, 0.48, 0.4, 0.051? (a) 0.331 (b) 0.48 (c) 0.4 (d) 0.051
  9. 9.What is the value of the digit 6 in 82.365? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  10. 10.7.17 + 9.2 = ? (a) 16.47 (b) 16.37 (c) 16.27 (d) 8.09
  11. 11.What is the value of the digit 9 in 41.759? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  12. 12.1.19 + 6.7 = ? (a) 7.99 (b) 1.86 (c) 7.89 (d) 7.79
  13. 13.Which is the smallest: 0.012, 0.136, 0.2, 0.23? (a) 0.012 (b) 0.136 (c) 0.2 (d) 0.23
  14. 14.Which is the smallest: 0.52, 0.5, 0.414, 0.036? (a) 0.52 (b) 0.5 (c) 0.414 (d) 0.036
  15. 15.Which is the greatest: 0.262, 0.3, 0.033, 0.34? (a) 0.262 (b) 0.3 (c) 0.033 (d) 0.34
  16. 16.What is the value of the digit 2 in 52.319? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  17. 17.Which is the greatest: 0.4, 0.44, 0.029, 0.377? (a) 0.4 (b) 0.44 (c) 0.029 (d) 0.377
  18. 18.6.03 + 7.2 = ? (a) 6.75 (b) 13.13 (c) 13.23 (d) 13.33
  19. 19.1.56 + 1.5 = ? (a) 3.16 (b) 1.71 (c) 3.06 (d) 2.96
  20. 20.3.81 + 2.1 = ? (a) 6.01 (b) 5.91 (c) 5.81 (d) 4.02
  21. 21.8.12 + 5.6 = ? (a) 13.82 (b) 8.68 (c) 13.62 (d) 13.72
  22. 22.2.09 + 2.5 = ? (a) 2.34 (b) 4.49 (c) 4.69 (d) 4.59
  23. 23.Which is the greatest: 0.242, 0.39, 0.079, 0.3? (a) 0.242 (b) 0.39 (c) 0.079 (d) 0.3
  24. 24.Which is the smallest: 0.26, 0.022, 0.186, 0.2? (a) 0.26 (b) 0.022 (c) 0.186 (d) 0.2
  25. 25.Which is the greatest: 0.081, 0.416, 0.5, 0.51? (a) 0.081 (b) 0.416 (c) 0.5 (d) 0.51
  26. 26.What is the value of the digit 9 in 12.489? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  27. 27.6.27 + 5.4 = ? (a) 11.57 (b) 11.67 (c) 11.77 (d) 6.81
  28. 28.What is the value of the digit 9 in 41.975? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  29. 29.Which is the smallest: 0.753, 0.082, 0.83, 0.8? (a) 0.753 (b) 0.082 (c) 0.83 (d) 0.8
  30. 30.1.04 + 8.5 = ? (a) 9.54 (b) 9.44 (c) 1.89 (d) 9.64
  31. 31.What is the value of the digit 8 in 49.823? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  32. 32.What is the value of the digit 3 in 37.912? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  33. 33.1.87 + 7.1 = ? (a) 8.87 (b) 2.58 (c) 9.07 (d) 8.97
  34. 34.What is the value of the digit 7 in 72.351? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  35. 35.Which is the smallest: 0.2, 0.162, 0.24, 0.093? (a) 0.2 (b) 0.162 (c) 0.24 (d) 0.093
  36. 36.2.78 + 3.2 = ? (a) 6.08 (b) 3.1 (c) 5.88 (d) 5.98
  37. 37.9.06 + 4.1 = ? (a) 9.47 (b) 13.16 (c) 13.26 (d) 13.06
  38. 38.Which is the smallest: 0.198, 0.26, 0.045, 0.2? (a) 0.198 (b) 0.26 (c) 0.045 (d) 0.2
  39. 39.4.26 + 5.9 = ? (a) 10.16 (b) 10.26 (c) 4.85 (d) 10.06
  40. 40.9.63 + 7.2 = ? (a) 16.73 (b) 10.35 (c) 16.83 (d) 16.93

Answer key

  1. 0.44
  2. 0.007
  3. 0.027
  4. 5
  5. 8.58
  6. 17.49
  7. 9.01
  8. 0.051
  9. 0.06
  10. 16.37
  11. 0.009
  12. 7.89
  13. 0.012
  14. 0.036
  15. 0.34
  16. 2
  17. 0.44
  18. 13.23
  19. 3.06
  20. 5.91
  21. 13.72
  22. 4.59
  23. 0.39
  24. 0.022
  25. 0.51
  26. 0.009
  27. 11.67
  28. 0.9
  29. 0.082
  30. 9.54
  31. 0.8
  32. 30
  33. 8.97
  34. 70
  35. 0.093
  36. 5.98
  37. 13.16
  38. 0.045
  39. 10.16
  40. 16.83

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