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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 125 · 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. 1.5.74 + 8.2 = ? (a) 13.84 (b) 14.04 (c) 13.94 (d) 6.56
  2. 2.What is the value of the digit 8 in 97.381? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  3. 3.What is the value of the digit 4 in 83.497? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  4. 4.7.22 + 9.2 = ? (a) 16.52 (b) 8.14 (c) 16.42 (d) 16.32
  5. 5.Which is the greatest: 0.63, 0.569, 0.6, 0.031? (a) 0.63 (b) 0.569 (c) 0.6 (d) 0.031
  6. 6.What is the value of the digit 4 in 35.914? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  7. 7.Which is the greatest: 0.35, 0.034, 0.277, 0.3? (a) 0.35 (b) 0.034 (c) 0.277 (d) 0.3
  8. 8.Which is the smallest: 0.188, 0.25, 0.2, 0.035? (a) 0.188 (b) 0.25 (c) 0.2 (d) 0.035
  9. 9.8.84 + 3.3 = ? (a) 12.04 (b) 12.24 (c) 9.17 (d) 12.14
  10. 10.Which is the smallest: 0.5, 0.433, 0.022, 0.56? (a) 0.5 (b) 0.433 (c) 0.022 (d) 0.56
  11. 11.Which is the greatest: 0.011, 0.8, 0.782, 0.81? (a) 0.011 (b) 0.8 (c) 0.782 (d) 0.81
  12. 12.Which is the greatest: 0.22, 0.2, 0.051, 0.168? (a) 0.22 (b) 0.2 (c) 0.051 (d) 0.168
  13. 13.What is the value of the digit 3 in 61.359? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  14. 14.5.97 + 8.3 = ? (a) 14.17 (b) 14.37 (c) 6.8 (d) 14.27
  15. 15.Which is the greatest: 0.035, 0.182, 0.24, 0.2? (a) 0.035 (b) 0.182 (c) 0.24 (d) 0.2
  16. 16.What is the value of the digit 1 in 29.185? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  17. 17.What is the value of the digit 9 in 89.375? (a) 0.09 (b) 90 (c) 0.9 (d) 9
  18. 18.Which is the greatest: 0.5, 0.437, 0.58, 0.015? (a) 0.5 (b) 0.437 (c) 0.58 (d) 0.015
  19. 19.1.47 + 2.4 = ? (a) 3.87 (b) 3.97 (c) 1.71 (d) 3.77
  20. 20.Which is the smallest: 0.044, 0.253, 0.3, 0.39? (a) 0.044 (b) 0.253 (c) 0.3 (d) 0.39
  21. 21.What is the value of the digit 3 in 74.836? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  22. 22.8.96 + 6.2 = ? (a) 15.06 (b) 15.26 (c) 9.58 (d) 15.16
  23. 23.6.54 + 9.6 = ? (a) 16.24 (b) 16.14 (c) 16.04 (d) 7.5
  24. 24.Which is the smallest: 0.5, 0.091, 0.475, 0.55? (a) 0.5 (b) 0.091 (c) 0.475 (d) 0.55
  25. 25.8.48 + 2.8 = ? (a) 11.38 (b) 11.18 (c) 8.76 (d) 11.28
  26. 26.Which is the greatest: 0.7, 0.687, 0.061, 0.73? (a) 0.7 (b) 0.687 (c) 0.061 (d) 0.73
  27. 27.5.72 + 7.7 = ? (a) 6.49 (b) 13.32 (c) 13.42 (d) 13.52
  28. 28.7.35 + 5.9 = ? (a) 7.94 (b) 13.35 (c) 13.25 (d) 13.15
  29. 29.Which is the greatest: 0.736, 0.081, 0.8, 0.86? (a) 0.736 (b) 0.081 (c) 0.8 (d) 0.86
  30. 30.1.18 + 1.3 = ? (a) 2.48 (b) 2.38 (c) 1.31 (d) 2.58
  31. 31.What is the value of the digit 9 in 39.461? (a) 90 (b) 0.09 (c) 9 (d) 0.9
  32. 32.2.91 + 5.4 = ? (a) 3.45 (b) 8.21 (c) 8.41 (d) 8.31
  33. 33.9.63 + 4.1 = ? (a) 10.04 (b) 13.63 (c) 13.83 (d) 13.73
  34. 34.Which is the smallest: 0.167, 0.28, 0.017, 0.2? (a) 0.167 (b) 0.28 (c) 0.017 (d) 0.2
  35. 35.Which is the smallest: 0.55, 0.031, 0.5, 0.495? (a) 0.55 (b) 0.031 (c) 0.5 (d) 0.495
  36. 36.2.33 + 2.9 = ? (a) 5.33 (b) 5.13 (c) 2.62 (d) 5.23
  37. 37.5.81 + 6.9 = ? (a) 12.61 (b) 12.81 (c) 6.5 (d) 12.71
  38. 38.Which is the smallest: 0.515, 0.6, 0.091, 0.69? (a) 0.515 (b) 0.6 (c) 0.091 (d) 0.69
  39. 39.Which is the greatest: 0.459, 0.52, 0.5, 0.096? (a) 0.459 (b) 0.52 (c) 0.5 (d) 0.096
  40. 40.What is the value of the digit 9 in 41.679? (a) 0.09 (b) 0.009 (c) 0.9 (d) 9

Answer key

  1. 13.94
  2. 0.08
  3. 0.4
  4. 16.42
  5. 0.63
  6. 0.004
  7. 0.35
  8. 0.035
  9. 12.14
  10. 0.022
  11. 0.81
  12. 0.22
  13. 0.3
  14. 14.27
  15. 0.24
  16. 0.1
  17. 9
  18. 0.58
  19. 3.87
  20. 0.044
  21. 0.03
  22. 15.16
  23. 16.14
  24. 0.091
  25. 11.28
  26. 0.73
  27. 13.42
  28. 13.25
  29. 0.86
  30. 2.48
  31. 9
  32. 8.31
  33. 13.73
  34. 0.017
  35. 0.031
  36. 5.23
  37. 12.71
  38. 0.091
  39. 0.52
  40. 0.009

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