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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 373 · 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. 1.2.81 + 6.4 = ? (a) 3.45 (b) 9.21 (c) 9.11 (d) 9.31
  2. 2.Which is the smallest: 0.59, 0.5, 0.423, 0.021? (a) 0.59 (b) 0.5 (c) 0.423 (d) 0.021
  3. 3.2.61 + 5.2 = ? (a) 7.71 (b) 7.81 (c) 3.13 (d) 7.91
  4. 4.Which is the smallest: 0.33, 0.272, 0.082, 0.3? (a) 0.33 (b) 0.272 (c) 0.082 (d) 0.3
  5. 5.What is the value of the digit 9 in 84.769? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  6. 6.3.28 + 3.3 = ? (a) 6.48 (b) 6.68 (c) 3.61 (d) 6.58
  7. 7.3.18 + 3.1 = ? (a) 6.38 (b) 6.18 (c) 6.28 (d) 3.49
  8. 8.5.34 + 9.2 = ? (a) 14.44 (b) 14.64 (c) 14.54 (d) 6.26
  9. 9.7.44 + 6.2 = ? (a) 13.74 (b) 13.54 (c) 8.06 (d) 13.64
  10. 10.Which is the greatest: 0.085, 0.7, 0.672, 0.73? (a) 0.085 (b) 0.7 (c) 0.672 (d) 0.73
  11. 11.What is the value of the digit 6 in 57.496? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  12. 12.What is the value of the digit 9 in 96.531? (a) 0.09 (b) 0.9 (c) 9 (d) 90
  13. 13.9.46 + 6.4 = ? (a) 15.96 (b) 10.1 (c) 15.86 (d) 15.76
  14. 14.Which is the smallest: 0.7, 0.647, 0.026, 0.73? (a) 0.7 (b) 0.647 (c) 0.026 (d) 0.73
  15. 15.What is the value of the digit 2 in 78.294? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  16. 16.What is the value of the digit 8 in 68.319? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  17. 17.What is the value of the digit 4 in 84.569? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  18. 18.7.56 + 4.9 = ? (a) 12.36 (b) 8.05 (c) 12.46 (d) 12.56
  19. 19.Which is the smallest: 0.197, 0.26, 0.093, 0.2? (a) 0.197 (b) 0.26 (c) 0.093 (d) 0.2
  20. 20.Which is the greatest: 0.4, 0.311, 0.47, 0.041? (a) 0.4 (b) 0.311 (c) 0.47 (d) 0.041
  21. 21.Which is the greatest: 0.5, 0.55, 0.025, 0.465? (a) 0.5 (b) 0.55 (c) 0.025 (d) 0.465
  22. 22.2.17 + 8.1 = ? (a) 10.37 (b) 2.98 (c) 10.17 (d) 10.27
  23. 23.What is the value of the digit 2 in 74.321? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  24. 24.What is the value of the digit 8 in 49.683? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  25. 25.5.86 + 2.1 = ? (a) 7.96 (b) 7.86 (c) 8.06 (d) 6.07
  26. 26.Which is the greatest: 0.526, 0.64, 0.074, 0.6? (a) 0.526 (b) 0.64 (c) 0.074 (d) 0.6
  27. 27.Which is the smallest: 0.032, 0.2, 0.27, 0.189? (a) 0.032 (b) 0.2 (c) 0.27 (d) 0.189
  28. 28.What is the value of the digit 1 in 21.493? (a) 1 (b) 0.01 (c) 10 (d) 0.1
  29. 29.Which is the greatest: 0.3, 0.32, 0.233, 0.023? (a) 0.3 (b) 0.32 (c) 0.233 (d) 0.023
  30. 30.9.07 + 1.4 = ? (a) 10.57 (b) 10.47 (c) 9.21 (d) 10.37
  31. 31.4.86 + 5.6 = ? (a) 5.42 (b) 10.56 (c) 10.36 (d) 10.46
  32. 32.Which is the smallest: 0.77, 0.653, 0.7, 0.027? (a) 0.77 (b) 0.653 (c) 0.7 (d) 0.027
  33. 33.What is the value of the digit 9 in 21.935? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  34. 34.What is the value of the digit 4 in 52.437? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  35. 35.What is the value of the digit 3 in 17.348? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  36. 36.What is the value of the digit 7 in 37.645? (a) 7 (b) 0.7 (c) 70 (d) 0.07
  37. 37.Which is the greatest: 0.6, 0.022, 0.529, 0.68? (a) 0.6 (b) 0.022 (c) 0.529 (d) 0.68
  38. 38.Which is the greatest: 0.4, 0.41, 0.316, 0.092? (a) 0.4 (b) 0.41 (c) 0.316 (d) 0.092
  39. 39.7.81 + 3.3 = ? (a) 11.11 (b) 8.14 (c) 11.21 (d) 11.01
  40. 40.7.14 + 5.9 = ? (a) 13.14 (b) 12.94 (c) 13.04 (d) 7.73

Answer key

  1. 9.21
  2. 0.021
  3. 7.81
  4. 0.082
  5. 0.009
  6. 6.58
  7. 6.28
  8. 14.54
  9. 13.64
  10. 0.73
  11. 0.006
  12. 90
  13. 15.86
  14. 0.026
  15. 0.2
  16. 8
  17. 4
  18. 12.46
  19. 0.093
  20. 0.47
  21. 0.55
  22. 10.27
  23. 0.02
  24. 0.08
  25. 7.96
  26. 0.64
  27. 0.032
  28. 1
  29. 0.32
  30. 10.47
  31. 10.46
  32. 0.027
  33. 0.9
  34. 0.4
  35. 0.3
  36. 7
  37. 0.68
  38. 0.41
  39. 11.11
  40. 13.04

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