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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 494 · 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: 0.095, 0.69, 0.573, 0.6? (a) 0.095 (b) 0.69 (c) 0.573 (d) 0.6
  2. 2.3.95 + 2.5 = ? (a) 6.35 (b) 6.55 (c) 6.45 (d) 4.2
  3. 3.7.95 + 8.3 = ? (a) 16.15 (b) 16.35 (c) 8.78 (d) 16.25
  4. 4.8.89 + 6.2 = ? (a) 15.19 (b) 15.09 (c) 14.99 (d) 9.51
  5. 5.7.21 + 6.2 = ? (a) 13.41 (b) 13.31 (c) 13.51 (d) 7.83
  6. 6.Which is the greatest: 0.461, 0.034, 0.5, 0.51? (a) 0.461 (b) 0.034 (c) 0.5 (d) 0.51
  7. 7.What is the value of the digit 3 in 28.431? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  8. 8.What is the value of the digit 1 in 14.583? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  9. 9.Which is the smallest: 0.497, 0.53, 0.5, 0.061? (a) 0.497 (b) 0.53 (c) 0.5 (d) 0.061
  10. 10.Which is the smallest: 0.046, 0.291, 0.3, 0.33? (a) 0.046 (b) 0.291 (c) 0.3 (d) 0.33
  11. 11.6.94 + 1.6 = ? (a) 8.54 (b) 8.64 (c) 7.1 (d) 8.44
  12. 12.Which is the smallest: 0.6, 0.062, 0.69, 0.592? (a) 0.6 (b) 0.062 (c) 0.69 (d) 0.592
  13. 13.1.82 + 2.5 = ? (a) 4.32 (b) 4.22 (c) 4.42 (d) 2.07
  14. 14.What is the value of the digit 4 in 24.397? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  15. 15.What is the value of the digit 7 in 28.147? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  16. 16.Which is the smallest: 0.552, 0.036, 0.6, 0.65? (a) 0.552 (b) 0.036 (c) 0.6 (d) 0.65
  17. 17.3.57 + 1.1 = ? (a) 4.67 (b) 4.77 (c) 4.57 (d) 3.68
  18. 18.What is the value of the digit 9 in 87.952? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  19. 19.Which is the smallest: 0.421, 0.5, 0.56, 0.063? (a) 0.421 (b) 0.5 (c) 0.56 (d) 0.063
  20. 20.What is the value of the digit 9 in 95.718? (a) 90 (b) 0.09 (c) 9 (d) 0.9
  21. 21.2.07 + 5.9 = ? (a) 7.97 (b) 2.66 (c) 8.07 (d) 7.87
  22. 22.What is the value of the digit 6 in 12.967? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  23. 23.Which is the smallest: 0.48, 0.032, 0.4, 0.379? (a) 0.48 (b) 0.032 (c) 0.4 (d) 0.379
  24. 24.Which is the smallest: 0.6, 0.67, 0.535, 0.043? (a) 0.6 (b) 0.67 (c) 0.535 (d) 0.043
  25. 25.What is the value of the digit 8 in 98.561? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  26. 26.7.92 + 4.5 = ? (a) 12.32 (b) 12.52 (c) 8.37 (d) 12.42
  27. 27.Which is the greatest: 0.778, 0.8, 0.86, 0.045? (a) 0.778 (b) 0.8 (c) 0.86 (d) 0.045
  28. 28.What is the value of the digit 8 in 13.784? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  29. 29.Which is the greatest: 0.754, 0.067, 0.87, 0.8? (a) 0.754 (b) 0.067 (c) 0.87 (d) 0.8
  30. 30.2.63 + 7.4 = ? (a) 10.13 (b) 3.37 (c) 10.03 (d) 9.93
  31. 31.1.55 + 9.4 = ? (a) 11.05 (b) 2.49 (c) 10.95 (d) 10.85
  32. 32.What is the value of the digit 5 in 85.462? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  33. 33.4.17 + 9.1 = ? (a) 13.37 (b) 13.27 (c) 13.17 (d) 5.08
  34. 34.What is the value of the digit 7 in 17.456? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  35. 35.3.51 + 9.7 = ? (a) 13.21 (b) 13.11 (c) 4.48 (d) 13.31
  36. 36.Which is the greatest: 0.159, 0.2, 0.049, 0.23? (a) 0.159 (b) 0.2 (c) 0.049 (d) 0.23
  37. 37.5.77 + 5.3 = ? (a) 11.17 (b) 10.97 (c) 6.3 (d) 11.07
  38. 38.Which is the greatest: 0.81, 0.8, 0.043, 0.787? (a) 0.81 (b) 0.8 (c) 0.043 (d) 0.787
  39. 39.4.25 + 5.9 = ? (a) 10.25 (b) 4.84 (c) 10.15 (d) 10.05
  40. 40.What is the value of the digit 9 in 35.912? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9

Answer key

  1. 0.69
  2. 6.45
  3. 16.25
  4. 15.09
  5. 13.41
  6. 0.51
  7. 0.03
  8. 10
  9. 0.061
  10. 0.046
  11. 8.54
  12. 0.062
  13. 4.32
  14. 4
  15. 0.007
  16. 0.036
  17. 4.67
  18. 0.9
  19. 0.063
  20. 90
  21. 7.97
  22. 0.06
  23. 0.032
  24. 0.043
  25. 8
  26. 12.42
  27. 0.86
  28. 0.08
  29. 0.87
  30. 10.03
  31. 10.95
  32. 5
  33. 13.27
  34. 7
  35. 13.21
  36. 0.23
  37. 11.07
  38. 0.81
  39. 10.15
  40. 0.9

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