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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 485 · 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. 1.8.08 + 5.6 = ? (a) 13.68 (b) 13.78 (c) 8.64 (d) 13.58
  2. 2.What is the value of the digit 6 in 54.762? (a) 0.006 (b) 6 (c) 0.06 (d) 0.6
  3. 3.9.64 + 7.8 = ? (a) 17.34 (b) 10.42 (c) 17.54 (d) 17.44
  4. 4.2.93 + 3.5 = ? (a) 3.28 (b) 6.53 (c) 6.43 (d) 6.33
  5. 5.Which is the greatest: 0.683, 0.035, 0.7, 0.73? (a) 0.683 (b) 0.035 (c) 0.7 (d) 0.73
  6. 6.1.25 + 8.5 = ? (a) 9.65 (b) 9.75 (c) 9.85 (d) 2.1
  7. 7.What is the value of the digit 5 in 59.164? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  8. 8.Which is the greatest: 0.719, 0.083, 0.8, 0.88? (a) 0.719 (b) 0.083 (c) 0.8 (d) 0.88
  9. 9.6.42 + 9.5 = ? (a) 7.37 (b) 16.02 (c) 15.82 (d) 15.92
  10. 10.Which is the greatest: 0.22, 0.187, 0.2, 0.087? (a) 0.22 (b) 0.187 (c) 0.2 (d) 0.087
  11. 11.9.62 + 4.7 = ? (a) 10.09 (b) 14.32 (c) 14.42 (d) 14.22
  12. 12.Which is the smallest: 0.557, 0.69, 0.039, 0.6? (a) 0.557 (b) 0.69 (c) 0.039 (d) 0.6
  13. 13.What is the value of the digit 8 in 65.874? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  14. 14.What is the value of the digit 3 in 32.865? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  15. 15.8.07 + 3.6 = ? (a) 11.57 (b) 11.67 (c) 8.43 (d) 11.77
  16. 16.Which is the greatest: 0.053, 0.2, 0.137, 0.22? (a) 0.053 (b) 0.2 (c) 0.137 (d) 0.22
  17. 17.What is the value of the digit 3 in 23.416? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  18. 18.5.89 + 9.9 = ? (a) 6.88 (b) 15.69 (c) 15.89 (d) 15.79
  19. 19.What is the value of the digit 5 in 57.892? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  20. 20.8.24 + 1.6 = ? (a) 9.74 (b) 9.84 (c) 9.94 (d) 8.4
  21. 21.Which is the greatest: 0.067, 0.385, 0.49, 0.4? (a) 0.067 (b) 0.385 (c) 0.49 (d) 0.4
  22. 22.6.26 + 3.1 = ? (a) 9.26 (b) 9.36 (c) 9.46 (d) 6.57
  23. 23.9.95 + 8.8 = ? (a) 10.83 (b) 18.85 (c) 18.65 (d) 18.75
  24. 24.What is the value of the digit 3 in 38.142? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  25. 25.What is the value of the digit 8 in 84.695? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  26. 26.What is the value of the digit 2 in 43.152? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  27. 27.5.98 + 3.5 = ? (a) 9.38 (b) 6.33 (c) 9.48 (d) 9.58
  28. 28.2.12 + 3.5 = ? (a) 2.47 (b) 5.52 (c) 5.72 (d) 5.62
  29. 29.4.54 + 4.1 = ? (a) 8.74 (b) 8.54 (c) 4.95 (d) 8.64
  30. 30.What is the value of the digit 1 in 31.529? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  31. 31.1.73 + 7.1 = ? (a) 8.83 (b) 8.93 (c) 2.44 (d) 8.73
  32. 32.What is the value of the digit 7 in 73.459? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  33. 33.What is the value of the digit 7 in 37.264? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  34. 34.Which is the greatest: 0.148, 0.048, 0.26, 0.2? (a) 0.148 (b) 0.048 (c) 0.26 (d) 0.2
  35. 35.1.48 + 3.8 = ? (a) 5.28 (b) 5.18 (c) 1.86 (d) 5.38
  36. 36.What is the value of the digit 4 in 39.847? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  37. 37.9.21 + 6.2 = ? (a) 15.31 (b) 15.41 (c) 9.83 (d) 15.51
  38. 38.5.61 + 1.1 = ? (a) 5.72 (b) 6.61 (c) 6.71 (d) 6.81
  39. 39.What is the value of the digit 6 in 13.896? (a) 0.06 (b) 0.6 (c) 0.006 (d) 6
  40. 40.Which is the smallest: 0.67, 0.563, 0.6, 0.061? (a) 0.67 (b) 0.563 (c) 0.6 (d) 0.061

Answer key

  1. 13.68
  2. 0.06
  3. 17.44
  4. 6.43
  5. 0.73
  6. 9.75
  7. 50
  8. 0.88
  9. 15.92
  10. 0.22
  11. 14.32
  12. 0.039
  13. 0.8
  14. 30
  15. 11.67
  16. 0.22
  17. 3
  18. 15.79
  19. 50
  20. 9.84
  21. 0.49
  22. 9.36
  23. 18.75
  24. 30
  25. 80
  26. 0.002
  27. 9.48
  28. 5.62
  29. 8.64
  30. 1
  31. 8.83
  32. 70
  33. 7
  34. 0.26
  35. 5.28
  36. 0.04
  37. 15.41
  38. 6.71
  39. 0.006
  40. 0.061

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