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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 391 · 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. 1.8.53 + 9.7 = ? (a) 9.5 (b) 18.13 (c) 18.33 (d) 18.23
  2. 2.What is the value of the digit 1 in 61.854? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  3. 3.9.87 + 3.1 = ? (a) 13.07 (b) 12.97 (c) 10.18 (d) 12.87
  4. 4.7.75 + 6.3 = ? (a) 14.05 (b) 13.95 (c) 8.38 (d) 14.15
  5. 5.What is the value of the digit 3 in 26.431? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  6. 6.9.09 + 1.9 = ? (a) 11.09 (b) 10.89 (c) 9.28 (d) 10.99
  7. 7.What is the value of the digit 3 in 38.254? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  8. 8.5.01 + 3.2 = ? (a) 8.11 (b) 5.33 (c) 8.21 (d) 8.31
  9. 9.What is the value of the digit 2 in 97.263? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  10. 10.1.21 + 1.7 = ? (a) 2.91 (b) 2.81 (c) 3.01 (d) 1.38
  11. 11.7.82 + 2.8 = ? (a) 10.72 (b) 8.1 (c) 10.62 (d) 10.52
  12. 12.What is the value of the digit 3 in 67.382? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  13. 13.Which is the smallest: 0.425, 0.5, 0.59, 0.059? (a) 0.425 (b) 0.5 (c) 0.59 (d) 0.059
  14. 14.2.79 + 6.5 = ? (a) 3.44 (b) 9.39 (c) 9.19 (d) 9.29
  15. 15.1.51 + 2.8 = ? (a) 4.21 (b) 4.41 (c) 1.79 (d) 4.31
  16. 16.2.65 + 4.2 = ? (a) 6.75 (b) 6.85 (c) 3.07 (d) 6.95
  17. 17.5.84 + 3.6 = ? (a) 9.34 (b) 9.44 (c) 9.54 (d) 6.2
  18. 18.9.62 + 9.2 = ? (a) 18.82 (b) 18.72 (c) 18.92 (d) 10.54
  19. 19.6.81 + 7.2 = ? (a) 14.11 (b) 7.53 (c) 13.91 (d) 14.01
  20. 20.What is the value of the digit 9 in 96.215? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  21. 21.6.85 + 5.6 = ? (a) 7.41 (b) 12.55 (c) 12.35 (d) 12.45
  22. 22.5.48 + 2.6 = ? (a) 7.98 (b) 8.08 (c) 5.74 (d) 8.18
  23. 23.What is the value of the digit 3 in 96.321? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  24. 24.Which is the greatest: 0.25, 0.011, 0.2, 0.188? (a) 0.25 (b) 0.011 (c) 0.2 (d) 0.188
  25. 25.Which is the greatest: 0.044, 0.8, 0.85, 0.767? (a) 0.044 (b) 0.8 (c) 0.85 (d) 0.767
  26. 26.Which is the smallest: 0.186, 0.076, 0.24, 0.2? (a) 0.186 (b) 0.076 (c) 0.24 (d) 0.2
  27. 27.What is the value of the digit 7 in 82.537? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  28. 28.What is the value of the digit 3 in 62.318? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  29. 29.Which is the smallest: 0.489, 0.5, 0.099, 0.52? (a) 0.489 (b) 0.5 (c) 0.099 (d) 0.52
  30. 30.What is the value of the digit 6 in 53.619? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  31. 31.What is the value of the digit 1 in 31.986? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  32. 32.Which is the greatest: 0.38, 0.027, 0.289, 0.3? (a) 0.38 (b) 0.027 (c) 0.289 (d) 0.3
  33. 33.What is the value of the digit 3 in 83.125? (a) 3 (b) 30 (c) 0.03 (d) 0.3
  34. 34.What is the value of the digit 2 in 75.923? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  35. 35.3.87 + 4.7 = ? (a) 8.67 (b) 8.47 (c) 4.34 (d) 8.57
  36. 36.Which is the greatest: 0.033, 0.453, 0.5, 0.53? (a) 0.033 (b) 0.453 (c) 0.5 (d) 0.53
  37. 37.8.11 + 9.6 = ? (a) 9.07 (b) 17.81 (c) 17.61 (d) 17.71
  38. 38.7.28 + 1.5 = ? (a) 8.88 (b) 7.43 (c) 8.68 (d) 8.78
  39. 39.7.15 + 4.4 = ? (a) 11.65 (b) 7.59 (c) 11.55 (d) 11.45
  40. 40.2.88 + 2.1 = ? (a) 4.98 (b) 4.88 (c) 3.09 (d) 5.08

Answer key

  1. 18.23
  2. 1
  3. 12.97
  4. 14.05
  5. 0.03
  6. 10.99
  7. 30
  8. 8.21
  9. 0.2
  10. 2.91
  11. 10.62
  12. 0.3
  13. 0.059
  14. 9.29
  15. 4.31
  16. 6.85
  17. 9.44
  18. 18.82
  19. 14.01
  20. 90
  21. 12.45
  22. 8.08
  23. 0.3
  24. 0.25
  25. 0.85
  26. 0.076
  27. 0.007
  28. 0.3
  29. 0.099
  30. 0.6
  31. 1
  32. 0.38
  33. 3
  34. 0.02
  35. 8.57
  36. 0.53
  37. 17.71
  38. 8.78
  39. 11.55
  40. 4.98

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