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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 634 · 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. 1.3.85 + 7.1 = ? (a) 11.05 (b) 10.95 (c) 10.85 (d) 4.56
  2. 2.What is the value of the digit 3 in 23.864? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  3. 3.5.87 + 8.8 = ? (a) 14.77 (b) 6.75 (c) 14.57 (d) 14.67
  4. 4.What is the value of the digit 7 in 15.728? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  5. 5.1.32 + 5.9 = ? (a) 7.12 (b) 7.32 (c) 1.91 (d) 7.22
  6. 6.What is the value of the digit 5 in 25.748? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  7. 7.What is the value of the digit 4 in 74.619? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  8. 8.5.05 + 3.1 = ? (a) 8.25 (b) 5.36 (c) 8.15 (d) 8.05
  9. 9.What is the value of the digit 6 in 37.964? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  10. 10.4.59 + 6.7 = ? (a) 5.26 (b) 11.29 (c) 11.39 (d) 11.19
  11. 11.What is the value of the digit 3 in 25.193? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  12. 12.Which is the greatest: 0.058, 0.685, 0.7, 0.71? (a) 0.058 (b) 0.685 (c) 0.7 (d) 0.71
  13. 13.Which is the greatest: 0.012, 0.482, 0.5, 0.56? (a) 0.012 (b) 0.482 (c) 0.5 (d) 0.56
  14. 14.7.74 + 3.6 = ? (a) 8.1 (b) 11.44 (c) 11.34 (d) 11.24
  15. 15.9.47 + 3.8 = ? (a) 13.37 (b) 13.27 (c) 13.17 (d) 9.85
  16. 16.3.31 + 6.9 = ? (a) 4 (b) 10.11 (c) 10.31 (d) 10.21
  17. 17.8.31 + 7.4 = ? (a) 15.71 (b) 9.05 (c) 15.81 (d) 15.61
  18. 18.9.26 + 1.1 = ? (a) 10.46 (b) 10.26 (c) 9.37 (d) 10.36
  19. 19.Which is the greatest: 0.6, 0.558, 0.079, 0.69? (a) 0.6 (b) 0.558 (c) 0.079 (d) 0.69
  20. 20.What is the value of the digit 4 in 75.184? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  21. 21.1.72 + 3.7 = ? (a) 5.32 (b) 5.42 (c) 2.09 (d) 5.52
  22. 22.Which is the smallest: 0.287, 0.37, 0.3, 0.021? (a) 0.287 (b) 0.37 (c) 0.3 (d) 0.021
  23. 23.What is the value of the digit 3 in 13.298? (a) 0.03 (b) 0.3 (c) 3 (d) 30
  24. 24.What is the value of the digit 6 in 52.469? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  25. 25.3.04 + 7.6 = ? (a) 10.64 (b) 10.74 (c) 3.8 (d) 10.54
  26. 26.3.79 + 2.1 = ? (a) 5.99 (b) 4 (c) 5.79 (d) 5.89
  27. 27.Which is the smallest: 0.028, 0.298, 0.32, 0.3? (a) 0.028 (b) 0.298 (c) 0.32 (d) 0.3
  28. 28.Which is the smallest: 0.017, 0.77, 0.7, 0.687? (a) 0.017 (b) 0.77 (c) 0.7 (d) 0.687
  29. 29.Which is the greatest: 0.251, 0.3, 0.35, 0.025? (a) 0.251 (b) 0.3 (c) 0.35 (d) 0.025
  30. 30.What is the value of the digit 4 in 18.647? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  31. 31.Which is the smallest: 0.57, 0.5, 0.045, 0.481? (a) 0.57 (b) 0.5 (c) 0.045 (d) 0.481
  32. 32.What is the value of the digit 2 in 34.672? (a) 0.2 (b) 2 (c) 0.002 (d) 0.02
  33. 33.3.65 + 2.6 = ? (a) 6.35 (b) 6.25 (c) 3.91 (d) 6.15
  34. 34.Which is the smallest: 0.039, 0.8, 0.81, 0.739? (a) 0.039 (b) 0.8 (c) 0.81 (d) 0.739
  35. 35.2.68 + 9.3 = ? (a) 11.88 (b) 3.61 (c) 12.08 (d) 11.98
  36. 36.Which is the smallest: 0.061, 0.235, 0.3, 0.33? (a) 0.061 (b) 0.235 (c) 0.3 (d) 0.33
  37. 37.What is the value of the digit 5 in 13.725? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  38. 38.Which is the smallest: 0.46, 0.4, 0.338, 0.073? (a) 0.46 (b) 0.4 (c) 0.338 (d) 0.073
  39. 39.Which is the smallest: 0.3, 0.223, 0.32, 0.026? (a) 0.3 (b) 0.223 (c) 0.32 (d) 0.026
  40. 40.Which is the greatest: 0.79, 0.079, 0.619, 0.7? (a) 0.79 (b) 0.079 (c) 0.619 (d) 0.7

Answer key

  1. 10.95
  2. 3
  3. 14.67
  4. 0.7
  5. 7.22
  6. 5
  7. 4
  8. 8.15
  9. 0.06
  10. 11.29
  11. 0.003
  12. 0.71
  13. 0.56
  14. 11.34
  15. 13.27
  16. 10.21
  17. 15.71
  18. 10.36
  19. 0.69
  20. 0.004
  21. 5.42
  22. 0.021
  23. 3
  24. 0.06
  25. 10.64
  26. 5.89
  27. 0.028
  28. 0.017
  29. 0.35
  30. 0.04
  31. 0.045
  32. 0.002
  33. 6.25
  34. 0.039
  35. 11.98
  36. 0.061
  37. 0.005
  38. 0.073
  39. 0.026
  40. 0.79

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