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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 288 · 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. 1.3.17 + 3.1 = ? (a) 6.27 (b) 6.17 (c) 6.37 (d) 3.48
  2. 2.7.43 + 3.9 = ? (a) 7.82 (b) 11.43 (c) 11.33 (d) 11.23
  3. 3.Which is the greatest: 0.2, 0.28, 0.118, 0.014? (a) 0.2 (b) 0.28 (c) 0.118 (d) 0.014
  4. 4.8.76 + 4.5 = ? (a) 9.21 (b) 13.36 (c) 13.26 (d) 13.16
  5. 5.Which is the smallest: 0.31, 0.237, 0.088, 0.3? (a) 0.31 (b) 0.237 (c) 0.088 (d) 0.3
  6. 6.What is the value of the digit 2 in 78.249? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  7. 7.What is the value of the digit 1 in 21.395? (a) 0.01 (b) 10 (c) 1 (d) 0.1
  8. 8.Which is the smallest: 0.5, 0.57, 0.014, 0.413? (a) 0.5 (b) 0.57 (c) 0.014 (d) 0.413
  9. 9.What is the value of the digit 3 in 71.253? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  10. 10.Which is the greatest: 0.391, 0.4, 0.43, 0.014? (a) 0.391 (b) 0.4 (c) 0.43 (d) 0.014
  11. 11.What is the value of the digit 3 in 35.729? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  12. 12.Which is the greatest: 0.759, 0.8, 0.81, 0.041? (a) 0.759 (b) 0.8 (c) 0.81 (d) 0.041
  13. 13.What is the value of the digit 7 in 25.736? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  14. 14.Which is the greatest: 0.095, 0.47, 0.4, 0.321? (a) 0.095 (b) 0.47 (c) 0.4 (d) 0.321
  15. 15.1.86 + 4.3 = ? (a) 6.16 (b) 2.29 (c) 6.26 (d) 6.06
  16. 16.What is the value of the digit 9 in 19.856? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  17. 17.8.39 + 1.7 = ? (a) 10.09 (b) 8.56 (c) 9.99 (d) 10.19
  18. 18.Which is the greatest: 0.056, 0.81, 0.8, 0.775? (a) 0.056 (b) 0.81 (c) 0.8 (d) 0.775
  19. 19.6.87 + 6.6 = ? (a) 13.47 (b) 13.57 (c) 13.37 (d) 7.53
  20. 20.Which is the greatest: 0.8, 0.84, 0.786, 0.083? (a) 0.8 (b) 0.84 (c) 0.786 (d) 0.083
  21. 21.5.75 + 7.6 = ? (a) 13.45 (b) 13.35 (c) 13.25 (d) 6.51
  22. 22.What is the value of the digit 8 in 56.487? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  23. 23.Which is the greatest: 0.549, 0.66, 0.6, 0.023? (a) 0.549 (b) 0.66 (c) 0.6 (d) 0.023
  24. 24.7.95 + 9.7 = ? (a) 8.92 (b) 17.65 (c) 17.55 (d) 17.75
  25. 25.5.39 + 6.8 = ? (a) 12.19 (b) 12.29 (c) 6.07 (d) 12.09
  26. 26.What is the value of the digit 6 in 81.546? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  27. 27.What is the value of the digit 6 in 16.289? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  28. 28.Which is the greatest: 0.8, 0.016, 0.89, 0.799? (a) 0.8 (b) 0.016 (c) 0.89 (d) 0.799
  29. 29.Which is the greatest: 0.214, 0.032, 0.3, 0.35? (a) 0.214 (b) 0.032 (c) 0.3 (d) 0.35
  30. 30.Which is the greatest: 0.418, 0.51, 0.053, 0.5? (a) 0.418 (b) 0.51 (c) 0.053 (d) 0.5
  31. 31.What is the value of the digit 7 in 73.124? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  32. 32.9.57 + 8.9 = ? (a) 10.46 (b) 18.37 (c) 18.57 (d) 18.47
  33. 33.Which is the greatest: 0.025, 0.4, 0.352, 0.46? (a) 0.025 (b) 0.4 (c) 0.352 (d) 0.46
  34. 34.Which is the smallest: 0.31, 0.067, 0.277, 0.3? (a) 0.31 (b) 0.067 (c) 0.277 (d) 0.3
  35. 35.What is the value of the digit 6 in 61.432? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  36. 36.Which is the greatest: 0.52, 0.5, 0.488, 0.016? (a) 0.52 (b) 0.5 (c) 0.488 (d) 0.016
  37. 37.Which is the smallest: 0.61, 0.542, 0.014, 0.6? (a) 0.61 (b) 0.542 (c) 0.014 (d) 0.6
  38. 38.2.31 + 7.9 = ? (a) 10.11 (b) 10.21 (c) 3.1 (d) 10.31
  39. 39.Which is the greatest: 0.714, 0.041, 0.8, 0.84? (a) 0.714 (b) 0.041 (c) 0.8 (d) 0.84
  40. 40.3.16 + 8.6 = ? (a) 11.66 (b) 11.76 (c) 4.02 (d) 11.86

Answer key

  1. 6.27
  2. 11.33
  3. 0.28
  4. 13.26
  5. 0.088
  6. 0.2
  7. 1
  8. 0.014
  9. 0.003
  10. 0.43
  11. 30
  12. 0.81
  13. 0.7
  14. 0.47
  15. 6.16
  16. 9
  17. 10.09
  18. 0.81
  19. 13.47
  20. 0.84
  21. 13.35
  22. 0.08
  23. 0.66
  24. 17.65
  25. 12.19
  26. 0.006
  27. 6
  28. 0.89
  29. 0.35
  30. 0.51
  31. 70
  32. 18.47
  33. 0.46
  34. 0.067
  35. 60
  36. 0.52
  37. 0.014
  38. 10.21
  39. 0.84
  40. 11.76

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