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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 199 · 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. 1.4.85 + 9.7 = ? (a) 14.65 (b) 5.82 (c) 14.55 (d) 14.45
  2. 2.2.09 + 2.6 = ? (a) 4.69 (b) 2.35 (c) 4.79 (d) 4.59
  3. 3.What is the value of the digit 9 in 39.742? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  4. 4.Which is the greatest: 0.721, 0.071, 0.8, 0.86? (a) 0.721 (b) 0.071 (c) 0.8 (d) 0.86
  5. 5.8.88 + 4.8 = ? (a) 13.58 (b) 9.36 (c) 13.68 (d) 13.78
  6. 6.What is the value of the digit 8 in 48.193? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  7. 7.6.28 + 8.1 = ? (a) 7.09 (b) 14.38 (c) 14.48 (d) 14.28
  8. 8.1.43 + 4.9 = ? (a) 6.23 (b) 6.33 (c) 6.43 (d) 1.92
  9. 9.Which is the smallest: 0.799, 0.85, 0.8, 0.015? (a) 0.799 (b) 0.85 (c) 0.8 (d) 0.015
  10. 10.5.72 + 3.9 = ? (a) 9.52 (b) 6.11 (c) 9.62 (d) 9.72
  11. 11.9.16 + 7.7 = ? (a) 9.93 (b) 16.96 (c) 16.76 (d) 16.86
  12. 12.6.37 + 2.2 = ? (a) 8.67 (b) 6.59 (c) 8.47 (d) 8.57
  13. 13.What is the value of the digit 9 in 95.821? (a) 9 (b) 90 (c) 0.09 (d) 0.9
  14. 14.What is the value of the digit 2 in 29.574? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  15. 15.Which is the smallest: 0.039, 0.525, 0.6, 0.62? (a) 0.039 (b) 0.525 (c) 0.6 (d) 0.62
  16. 16.Which is the greatest: 0.085, 0.4, 0.341, 0.49? (a) 0.085 (b) 0.4 (c) 0.341 (d) 0.49
  17. 17.9.61 + 8.3 = ? (a) 10.44 (b) 18.01 (c) 17.81 (d) 17.91
  18. 18.Which is the smallest: 0.039, 0.471, 0.5, 0.53? (a) 0.039 (b) 0.471 (c) 0.5 (d) 0.53
  19. 19.Which is the smallest: 0.083, 0.76, 0.7, 0.644? (a) 0.083 (b) 0.76 (c) 0.7 (d) 0.644
  20. 20.Which is the greatest: 0.8, 0.025, 0.83, 0.723? (a) 0.8 (b) 0.025 (c) 0.83 (d) 0.723
  21. 21.Which is the greatest: 0.6, 0.66, 0.017, 0.569? (a) 0.6 (b) 0.66 (c) 0.017 (d) 0.569
  22. 22.Which is the greatest: 0.7, 0.612, 0.71, 0.024? (a) 0.7 (b) 0.612 (c) 0.71 (d) 0.024
  23. 23.Which is the smallest: 0.186, 0.25, 0.2, 0.078? (a) 0.186 (b) 0.25 (c) 0.2 (d) 0.078
  24. 24.3.85 + 7.1 = ? (a) 4.56 (b) 11.05 (c) 10.85 (d) 10.95
  25. 25.7.01 + 8.1 = ? (a) 15.21 (b) 15.11 (c) 15.01 (d) 7.82
  26. 26.Which is the greatest: 0.331, 0.056, 0.43, 0.4? (a) 0.331 (b) 0.056 (c) 0.43 (d) 0.4
  27. 27.Which is the smallest: 0.757, 0.032, 0.82, 0.8? (a) 0.757 (b) 0.032 (c) 0.82 (d) 0.8
  28. 28.What is the value of the digit 8 in 92.861? (a) 0.8 (b) 8 (c) 0.08 (d) 0.008
  29. 29.9.64 + 4.4 = ? (a) 13.94 (b) 14.04 (c) 14.14 (d) 10.08
  30. 30.Which is the greatest: 0.53, 0.078, 0.5, 0.432? (a) 0.53 (b) 0.078 (c) 0.5 (d) 0.432
  31. 31.Which is the greatest: 0.034, 0.418, 0.57, 0.5? (a) 0.034 (b) 0.418 (c) 0.57 (d) 0.5
  32. 32.What is the value of the digit 8 in 86.345? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  33. 33.Which is the smallest: 0.043, 0.664, 0.7, 0.76? (a) 0.043 (b) 0.664 (c) 0.7 (d) 0.76
  34. 34.Which is the greatest: 0.044, 0.77, 0.7, 0.649? (a) 0.044 (b) 0.77 (c) 0.7 (d) 0.649
  35. 35.What is the value of the digit 1 in 71.345? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  36. 36.Which is the greatest: 0.494, 0.57, 0.042, 0.5? (a) 0.494 (b) 0.57 (c) 0.042 (d) 0.5
  37. 37.3.68 + 9.2 = ? (a) 4.6 (b) 12.78 (c) 12.88 (d) 12.98
  38. 38.3.91 + 4.4 = ? (a) 4.35 (b) 8.41 (c) 8.31 (d) 8.21
  39. 39.1.27 + 1.2 = ? (a) 2.47 (b) 2.57 (c) 2.37 (d) 1.39
  40. 40.2.64 + 3.5 = ? (a) 6.04 (b) 6.24 (c) 2.99 (d) 6.14

Answer key

  1. 14.55
  2. 4.69
  3. 9
  4. 0.86
  5. 13.68
  6. 8
  7. 14.38
  8. 6.33
  9. 0.015
  10. 9.62
  11. 16.86
  12. 8.57
  13. 90
  14. 20
  15. 0.039
  16. 0.49
  17. 17.91
  18. 0.039
  19. 0.083
  20. 0.83
  21. 0.66
  22. 0.71
  23. 0.078
  24. 10.95
  25. 15.11
  26. 0.43
  27. 0.032
  28. 0.8
  29. 14.04
  30. 0.53
  31. 0.57
  32. 80
  33. 0.043
  34. 0.77
  35. 1
  36. 0.57
  37. 12.88
  38. 8.31
  39. 2.47
  40. 6.14

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