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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 358 · 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. 1.8.24 + 6.1 = ? (a) 14.24 (b) 14.44 (c) 14.34 (d) 8.85
  2. 2.What is the value of the digit 4 in 72.945? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  3. 3.9.22 + 7.4 = ? (a) 9.96 (b) 16.72 (c) 16.62 (d) 16.52
  4. 4.What is the value of the digit 2 in 21.386? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  5. 5.Which is the greatest: 0.5, 0.455, 0.098, 0.53? (a) 0.5 (b) 0.455 (c) 0.098 (d) 0.53
  6. 6.Which is the smallest: 0.8, 0.025, 0.82, 0.789? (a) 0.8 (b) 0.025 (c) 0.82 (d) 0.789
  7. 7.4.56 + 9.8 = ? (a) 5.54 (b) 14.26 (c) 14.46 (d) 14.36
  8. 8.Which is the smallest: 0.071, 0.185, 0.28, 0.2? (a) 0.071 (b) 0.185 (c) 0.28 (d) 0.2
  9. 9.Which is the smallest: 0.013, 0.38, 0.3, 0.239? (a) 0.013 (b) 0.38 (c) 0.3 (d) 0.239
  10. 10.Which is the greatest: 0.233, 0.33, 0.053, 0.3? (a) 0.233 (b) 0.33 (c) 0.053 (d) 0.3
  11. 11.6.72 + 1.5 = ? (a) 8.32 (b) 8.22 (c) 8.12 (d) 6.87
  12. 12.What is the value of the digit 9 in 14.579? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  13. 13.4.46 + 7.7 = ? (a) 12.06 (b) 5.23 (c) 12.16 (d) 12.26
  14. 14.7.24 + 5.8 = ? (a) 7.82 (b) 13.14 (c) 12.94 (d) 13.04
  15. 15.5.91 + 5.3 = ? (a) 6.44 (b) 11.21 (c) 11.11 (d) 11.31
  16. 16.3.93 + 1.9 = ? (a) 5.83 (b) 4.12 (c) 5.93 (d) 5.73
  17. 17.Which is the greatest: 0.379, 0.4, 0.49, 0.047? (a) 0.379 (b) 0.4 (c) 0.49 (d) 0.047
  18. 18.4.09 + 9.1 = ? (a) 5 (b) 13.19 (c) 13.29 (d) 13.09
  19. 19.Which is the greatest: 0.394, 0.4, 0.43, 0.041? (a) 0.394 (b) 0.4 (c) 0.43 (d) 0.041
  20. 20.What is the value of the digit 2 in 12.954? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  21. 21.8.86 + 7.8 = ? (a) 16.66 (b) 9.64 (c) 16.56 (d) 16.76
  22. 22.What is the value of the digit 8 in 89.764? (a) 0.8 (b) 80 (c) 8 (d) 0.08
  23. 23.9.32 + 4.9 = ? (a) 14.32 (b) 14.12 (c) 14.22 (d) 9.81
  24. 24.8.87 + 2.1 = ? (a) 10.97 (b) 11.07 (c) 9.08 (d) 10.87
  25. 25.Which is the smallest: 0.362, 0.48, 0.4, 0.074? (a) 0.362 (b) 0.48 (c) 0.4 (d) 0.074
  26. 26.What is the value of the digit 7 in 34.769? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  27. 27.4.46 + 9.2 = ? (a) 13.66 (b) 5.38 (c) 13.56 (d) 13.76
  28. 28.2.54 + 4.9 = ? (a) 7.54 (b) 3.03 (c) 7.44 (d) 7.34
  29. 29.Which is the smallest: 0.283, 0.31, 0.3, 0.091? (a) 0.283 (b) 0.31 (c) 0.3 (d) 0.091
  30. 30.What is the value of the digit 4 in 12.485? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  31. 31.What is the value of the digit 6 in 68.942? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  32. 32.What is the value of the digit 6 in 43.796? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  33. 33.6.13 + 2.1 = ? (a) 6.34 (b) 8.33 (c) 8.23 (d) 8.13
  34. 34.What is the value of the digit 9 in 54.928? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  35. 35.9.38 + 8.7 = ? (a) 17.98 (b) 18.18 (c) 10.25 (d) 18.08
  36. 36.What is the value of the digit 6 in 27.316? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  37. 37.What is the value of the digit 3 in 34.285? (a) 0.3 (b) 0.03 (c) 30 (d) 3
  38. 38.Which is the greatest: 0.43, 0.383, 0.4, 0.022? (a) 0.43 (b) 0.383 (c) 0.4 (d) 0.022
  39. 39.6.11 + 1.1 = ? (a) 7.11 (b) 7.21 (c) 7.31 (d) 6.22
  40. 40.2.89 + 9.2 = ? (a) 12.19 (b) 11.99 (c) 3.81 (d) 12.09

Answer key

  1. 14.34
  2. 0.04
  3. 16.62
  4. 20
  5. 0.53
  6. 0.025
  7. 14.36
  8. 0.071
  9. 0.013
  10. 0.33
  11. 8.22
  12. 0.009
  13. 12.16
  14. 13.04
  15. 11.21
  16. 5.83
  17. 0.49
  18. 13.19
  19. 0.43
  20. 2
  21. 16.66
  22. 80
  23. 14.22
  24. 10.97
  25. 0.074
  26. 0.7
  27. 13.66
  28. 7.44
  29. 0.091
  30. 0.4
  31. 60
  32. 0.006
  33. 8.23
  34. 0.9
  35. 18.08
  36. 0.006
  37. 30
  38. 0.43
  39. 7.21
  40. 12.09

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