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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 251 · 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. 1.3.91 + 1.9 = ? (a) 4.1 (b) 5.71 (c) 5.81 (d) 5.91
  2. 2.What is the value of the digit 1 in 41.976? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  3. 3.Which is the smallest: 0.8, 0.84, 0.065, 0.729? (a) 0.8 (b) 0.84 (c) 0.065 (d) 0.729
  4. 4.5.31 + 5.4 = ? (a) 10.81 (b) 5.85 (c) 10.61 (d) 10.71
  5. 5.5.54 + 8.1 = ? (a) 13.54 (b) 6.35 (c) 13.74 (d) 13.64
  6. 6.7.81 + 6.1 = ? (a) 14.01 (b) 13.91 (c) 13.81 (d) 8.42
  7. 7.7.02 + 4.7 = ? (a) 11.62 (b) 11.82 (c) 7.49 (d) 11.72
  8. 8.7.36 + 1.8 = ? (a) 7.54 (b) 9.16 (c) 9.06 (d) 9.26
  9. 9.What is the value of the digit 5 in 56.189? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  10. 10.Which is the smallest: 0.127, 0.2, 0.29, 0.035? (a) 0.127 (b) 0.2 (c) 0.29 (d) 0.035
  11. 11.What is the value of the digit 3 in 23.546? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  12. 12.What is the value of the digit 1 in 13.295? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  13. 13.8.87 + 9.4 = ? (a) 18.17 (b) 18.27 (c) 18.37 (d) 9.81
  14. 14.Which is the greatest: 0.8, 0.738, 0.82, 0.025? (a) 0.8 (b) 0.738 (c) 0.82 (d) 0.025
  15. 15.What is the value of the digit 6 in 69.873? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  16. 16.Which is the smallest: 0.056, 0.73, 0.639, 0.7? (a) 0.056 (b) 0.73 (c) 0.639 (d) 0.7
  17. 17.What is the value of the digit 3 in 28.973? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  18. 18.5.81 + 3.5 = ? (a) 9.21 (b) 6.16 (c) 9.41 (d) 9.31
  19. 19.Which is the smallest: 0.66, 0.063, 0.528, 0.6? (a) 0.66 (b) 0.063 (c) 0.528 (d) 0.6
  20. 20.What is the value of the digit 4 in 37.894? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  21. 21.Which is the greatest: 0.253, 0.32, 0.3, 0.089? (a) 0.253 (b) 0.32 (c) 0.3 (d) 0.089
  22. 22.Which is the smallest: 0.31, 0.296, 0.3, 0.013? (a) 0.31 (b) 0.296 (c) 0.3 (d) 0.013
  23. 23.5.74 + 9.1 = ? (a) 14.74 (b) 6.65 (c) 14.94 (d) 14.84
  24. 24.What is the value of the digit 4 in 86.149? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  25. 25.Which is the greatest: 0.24, 0.2, 0.121, 0.039? (a) 0.24 (b) 0.2 (c) 0.121 (d) 0.039
  26. 26.Which is the greatest: 0.634, 0.72, 0.017, 0.7? (a) 0.634 (b) 0.72 (c) 0.017 (d) 0.7
  27. 27.Which is the smallest: 0.481, 0.53, 0.5, 0.035? (a) 0.481 (b) 0.53 (c) 0.5 (d) 0.035
  28. 28.Which is the greatest: 0.8, 0.82, 0.755, 0.057? (a) 0.8 (b) 0.82 (c) 0.755 (d) 0.057
  29. 29.What is the value of the digit 3 in 56.932? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  30. 30.What is the value of the digit 3 in 35.624? (a) 3 (b) 0.3 (c) 30 (d) 0.03
  31. 31.What is the value of the digit 8 in 21.839? (a) 0.08 (b) 8 (c) 0.8 (d) 0.008
  32. 32.Which is the greatest: 0.77, 0.7, 0.681, 0.041? (a) 0.77 (b) 0.7 (c) 0.681 (d) 0.041
  33. 33.2.14 + 5.3 = ? (a) 2.67 (b) 7.44 (c) 7.54 (d) 7.34
  34. 34.Which is the smallest: 0.249, 0.017, 0.3, 0.31? (a) 0.249 (b) 0.017 (c) 0.3 (d) 0.31
  35. 35.What is the value of the digit 4 in 82.746? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  36. 36.What is the value of the digit 9 in 43.179? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9
  37. 37.Which is the smallest: 0.049, 0.196, 0.2, 0.25? (a) 0.049 (b) 0.196 (c) 0.2 (d) 0.25
  38. 38.5.04 + 6.1 = ? (a) 11.24 (b) 11.04 (c) 5.65 (d) 11.14
  39. 39.Which is the smallest: 0.2, 0.137, 0.067, 0.29? (a) 0.2 (b) 0.137 (c) 0.067 (d) 0.29
  40. 40.5.51 + 5.1 = ? (a) 10.71 (b) 10.61 (c) 10.51 (d) 6.02

Answer key

  1. 5.81
  2. 1
  3. 0.065
  4. 10.71
  5. 13.64
  6. 13.91
  7. 11.72
  8. 9.16
  9. 50
  10. 0.035
  11. 3
  12. 10
  13. 18.27
  14. 0.82
  15. 60
  16. 0.056
  17. 0.003
  18. 9.31
  19. 0.063
  20. 0.004
  21. 0.32
  22. 0.013
  23. 14.84
  24. 0.04
  25. 0.24
  26. 0.72
  27. 0.035
  28. 0.82
  29. 0.03
  30. 30
  31. 0.8
  32. 0.77
  33. 7.44
  34. 0.017
  35. 0.04
  36. 0.009
  37. 0.049
  38. 11.14
  39. 0.067
  40. 10.61

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