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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 714 · 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. 1.6.23 + 4.3 = ? (a) 10.63 (b) 10.53 (c) 10.43 (d) 6.66
  2. 2.1.48 + 4.1 = ? (a) 1.89 (b) 5.68 (c) 5.58 (d) 5.48
  3. 3.Which is the greatest: 0.088, 0.51, 0.5, 0.481? (a) 0.088 (b) 0.51 (c) 0.5 (d) 0.481
  4. 4.What is the value of the digit 5 in 65.789? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  5. 5.What is the value of the digit 9 in 29.137? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  6. 6.9.54 + 9.8 = ? (a) 19.44 (b) 10.52 (c) 19.24 (d) 19.34
  7. 7.3.15 + 9.5 = ? (a) 4.1 (b) 12.75 (c) 12.55 (d) 12.65
  8. 8.What is the value of the digit 9 in 67.592? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  9. 9.Which is the smallest: 0.39, 0.252, 0.3, 0.031? (a) 0.39 (b) 0.252 (c) 0.3 (d) 0.031
  10. 10.9.86 + 7.7 = ? (a) 17.46 (b) 10.63 (c) 17.56 (d) 17.66
  11. 11.2.63 + 3.5 = ? (a) 6.03 (b) 2.98 (c) 6.23 (d) 6.13
  12. 12.What is the value of the digit 8 in 58.962? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  13. 13.Which is the greatest: 0.025, 0.574, 0.6, 0.66? (a) 0.025 (b) 0.574 (c) 0.6 (d) 0.66
  14. 14.Which is the greatest: 0.013, 0.383, 0.4, 0.43? (a) 0.013 (b) 0.383 (c) 0.4 (d) 0.43
  15. 15.What is the value of the digit 2 in 25.867? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  16. 16.Which is the smallest: 0.019, 0.83, 0.8, 0.746? (a) 0.019 (b) 0.83 (c) 0.8 (d) 0.746
  17. 17.3.79 + 5.6 = ? (a) 4.35 (b) 9.29 (c) 9.39 (d) 9.49
  18. 18.What is the value of the digit 5 in 28.957? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  19. 19.What is the value of the digit 6 in 25.476? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  20. 20.2.85 + 6.9 = ? (a) 3.54 (b) 9.75 (c) 9.85 (d) 9.65
  21. 21.6.82 + 8.1 = ? (a) 15.02 (b) 14.82 (c) 14.92 (d) 7.63
  22. 22.Which is the smallest: 0.83, 0.038, 0.8, 0.721? (a) 0.83 (b) 0.038 (c) 0.8 (d) 0.721
  23. 23.Which is the smallest: 0.6, 0.057, 0.69, 0.576? (a) 0.6 (b) 0.057 (c) 0.69 (d) 0.576
  24. 24.What is the value of the digit 7 in 75.148? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  25. 25.1.51 + 3.4 = ? (a) 4.81 (b) 4.91 (c) 1.85 (d) 5.01
  26. 26.5.41 + 3.3 = ? (a) 8.81 (b) 8.61 (c) 5.74 (d) 8.71
  27. 27.Which is the smallest: 0.26, 0.2, 0.148, 0.035? (a) 0.26 (b) 0.2 (c) 0.148 (d) 0.035
  28. 28.What is the value of the digit 5 in 25.197? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  29. 29.Which is the greatest: 0.092, 0.39, 0.3, 0.236? (a) 0.092 (b) 0.39 (c) 0.3 (d) 0.236
  30. 30.Which is the greatest: 0.3, 0.38, 0.283, 0.086? (a) 0.3 (b) 0.38 (c) 0.283 (d) 0.086
  31. 31.What is the value of the digit 8 in 98.637? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  32. 32.3.96 + 2.8 = ? (a) 6.86 (b) 6.66 (c) 4.24 (d) 6.76
  33. 33.What is the value of the digit 2 in 47.216? (a) 2 (b) 0.2 (c) 0.02 (d) 0.002
  34. 34.4.66 + 5.6 = ? (a) 10.26 (b) 10.16 (c) 10.36 (d) 5.22
  35. 35.2.11 + 3.1 = ? (a) 2.42 (b) 5.11 (c) 5.31 (d) 5.21
  36. 36.8.49 + 3.9 = ? (a) 8.88 (b) 12.29 (c) 12.49 (d) 12.39
  37. 37.2.31 + 9.4 = ? (a) 11.81 (b) 11.61 (c) 3.25 (d) 11.71
  38. 38.What is the value of the digit 5 in 18.597? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  39. 39.Which is the smallest: 0.545, 0.63, 0.6, 0.057? (a) 0.545 (b) 0.63 (c) 0.6 (d) 0.057
  40. 40.2.86 + 4.2 = ? (a) 6.96 (b) 7.06 (c) 3.28 (d) 7.16

Answer key

  1. 10.53
  2. 5.58
  3. 0.51
  4. 5
  5. 9
  6. 19.34
  7. 12.65
  8. 0.09
  9. 0.031
  10. 17.56
  11. 6.13
  12. 8
  13. 0.66
  14. 0.43
  15. 20
  16. 0.019
  17. 9.39
  18. 0.05
  19. 0.006
  20. 9.75
  21. 14.92
  22. 0.038
  23. 0.057
  24. 70
  25. 4.91
  26. 8.71
  27. 0.035
  28. 5
  29. 0.39
  30. 0.38
  31. 8
  32. 6.76
  33. 0.2
  34. 10.26
  35. 5.21
  36. 12.39
  37. 11.71
  38. 0.5
  39. 0.057
  40. 7.06

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