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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 462 · 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. 1.6.05 + 9.7 = ? (a) 15.85 (b) 7.02 (c) 15.65 (d) 15.75
  2. 2.5.45 + 3.6 = ? (a) 8.95 (b) 5.81 (c) 9.05 (d) 9.15
  3. 3.What is the value of the digit 7 in 89.347? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  4. 4.Which is the greatest: 0.41, 0.342, 0.4, 0.027? (a) 0.41 (b) 0.342 (c) 0.4 (d) 0.027
  5. 5.Which is the smallest: 0.85, 0.749, 0.032, 0.8? (a) 0.85 (b) 0.749 (c) 0.032 (d) 0.8
  6. 6.What is the value of the digit 5 in 27.395? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  7. 7.7.62 + 3.8 = ? (a) 11.52 (b) 11.42 (c) 11.32 (d) 8
  8. 8.Which is the greatest: 0.6, 0.62, 0.046, 0.527? (a) 0.6 (b) 0.62 (c) 0.046 (d) 0.527
  9. 9.1.81 + 7.4 = ? (a) 9.11 (b) 2.55 (c) 9.21 (d) 9.31
  10. 10.Which is the greatest: 0.7, 0.051, 0.75, 0.695? (a) 0.7 (b) 0.051 (c) 0.75 (d) 0.695
  11. 11.What is the value of the digit 8 in 13.478? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  12. 12.3.28 + 7.8 = ? (a) 10.98 (b) 11.18 (c) 4.06 (d) 11.08
  13. 13.Which is the greatest: 0.075, 0.566, 0.6, 0.61? (a) 0.075 (b) 0.566 (c) 0.6 (d) 0.61
  14. 14.What is the value of the digit 3 in 51.327? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  15. 15.5.09 + 7.4 = ? (a) 12.59 (b) 12.49 (c) 12.39 (d) 5.83
  16. 16.7.33 + 9.3 = ? (a) 16.73 (b) 16.53 (c) 8.26 (d) 16.63
  17. 17.What is the value of the digit 9 in 89.124? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  18. 18.3.18 + 9.1 = ? (a) 12.38 (b) 4.09 (c) 12.18 (d) 12.28
  19. 19.Which is the greatest: 0.229, 0.033, 0.3, 0.34? (a) 0.229 (b) 0.033 (c) 0.3 (d) 0.34
  20. 20.Which is the greatest: 0.063, 0.362, 0.4, 0.43? (a) 0.063 (b) 0.362 (c) 0.4 (d) 0.43
  21. 21.4.53 + 2.4 = ? (a) 6.93 (b) 6.83 (c) 4.77 (d) 7.03
  22. 22.9.86 + 5.9 = ? (a) 15.86 (b) 10.45 (c) 15.76 (d) 15.66
  23. 23.7.97 + 7.8 = ? (a) 8.75 (b) 15.77 (c) 15.87 (d) 15.67
  24. 24.What is the value of the digit 4 in 92.478? (a) 0.4 (b) 4 (c) 0.04 (d) 0.004
  25. 25.What is the value of the digit 5 in 49.536? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  26. 26.What is the value of the digit 2 in 81.942? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  27. 27.What is the value of the digit 8 in 41.285? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  28. 28.What is the value of the digit 9 in 96.247? (a) 0.09 (b) 0.9 (c) 90 (d) 9
  29. 29.2.82 + 1.1 = ? (a) 3.82 (b) 4.02 (c) 3.92 (d) 2.93
  30. 30.9.69 + 8.7 = ? (a) 18.39 (b) 18.49 (c) 18.29 (d) 10.56
  31. 31.Which is the smallest: 0.4, 0.43, 0.325, 0.093? (a) 0.4 (b) 0.43 (c) 0.325 (d) 0.093
  32. 32.8.47 + 7.5 = ? (a) 9.22 (b) 16.07 (c) 15.87 (d) 15.97
  33. 33.What is the value of the digit 7 in 75.832? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  34. 34.Which is the smallest: 0.27, 0.199, 0.012, 0.2? (a) 0.27 (b) 0.199 (c) 0.012 (d) 0.2
  35. 35.2.27 + 3.6 = ? (a) 2.63 (b) 5.77 (c) 5.97 (d) 5.87
  36. 36.What is the value of the digit 1 in 28.413? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  37. 37.Which is the greatest: 0.024, 0.46, 0.4, 0.329? (a) 0.024 (b) 0.46 (c) 0.4 (d) 0.329
  38. 38.What is the value of the digit 8 in 74.826? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  39. 39.Which is the greatest: 0.111, 0.2, 0.23, 0.041? (a) 0.111 (b) 0.2 (c) 0.23 (d) 0.041
  40. 40.7.46 + 2.2 = ? (a) 7.68 (b) 9.66 (c) 9.76 (d) 9.56

Answer key

  1. 15.75
  2. 9.05
  3. 0.007
  4. 0.41
  5. 0.032
  6. 0.005
  7. 11.42
  8. 0.62
  9. 9.21
  10. 0.75
  11. 0.008
  12. 11.08
  13. 0.61
  14. 0.3
  15. 12.49
  16. 16.63
  17. 9
  18. 12.28
  19. 0.34
  20. 0.43
  21. 6.93
  22. 15.76
  23. 15.77
  24. 0.4
  25. 0.5
  26. 0.002
  27. 0.08
  28. 90
  29. 3.92
  30. 18.39
  31. 0.093
  32. 15.97
  33. 70
  34. 0.012
  35. 5.87
  36. 0.01
  37. 0.46
  38. 0.8
  39. 0.23
  40. 9.66

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