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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 453 · 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. 1.3.04 + 3.8 = ? (a) 3.42 (b) 6.94 (c) 6.84 (d) 6.74
  2. 2.What is the value of the digit 6 in 67.549? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  3. 3.4.29 + 1.2 = ? (a) 5.49 (b) 4.41 (c) 5.39 (d) 5.59
  4. 4.6.24 + 6.1 = ? (a) 6.85 (b) 12.44 (c) 12.34 (d) 12.24
  5. 5.Which is the smallest: 0.078, 0.189, 0.2, 0.21? (a) 0.078 (b) 0.189 (c) 0.2 (d) 0.21
  6. 6.2.92 + 2.1 = ? (a) 3.13 (b) 4.92 (c) 5.02 (d) 5.12
  7. 7.2.71 + 3.3 = ? (a) 6.11 (b) 5.91 (c) 6.01 (d) 3.04
  8. 8.Which is the greatest: 0.46, 0.076, 0.4, 0.313? (a) 0.46 (b) 0.076 (c) 0.4 (d) 0.313
  9. 9.Which is the smallest: 0.082, 0.42, 0.334, 0.4? (a) 0.082 (b) 0.42 (c) 0.334 (d) 0.4
  10. 10.3.35 + 1.5 = ? (a) 4.85 (b) 3.5 (c) 4.95 (d) 4.75
  11. 11.What is the value of the digit 3 in 91.365? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  12. 12.1.77 + 4.2 = ? (a) 2.19 (b) 5.97 (c) 6.07 (d) 5.87
  13. 13.What is the value of the digit 9 in 65.849? (a) 9 (b) 0.9 (c) 0.09 (d) 0.009
  14. 14.2.84 + 8.1 = ? (a) 11.04 (b) 10.84 (c) 3.65 (d) 10.94
  15. 15.What is the value of the digit 2 in 71.329? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  16. 16.7.55 + 3.7 = ? (a) 11.35 (b) 7.92 (c) 11.15 (d) 11.25
  17. 17.Which is the greatest: 0.31, 0.059, 0.3, 0.259? (a) 0.31 (b) 0.059 (c) 0.3 (d) 0.259
  18. 18.What is the value of the digit 3 in 63.784? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  19. 19.1.38 + 2.4 = ? (a) 3.68 (b) 3.88 (c) 3.78 (d) 1.62
  20. 20.Which is the smallest: 0.24, 0.2, 0.036, 0.193? (a) 0.24 (b) 0.2 (c) 0.036 (d) 0.193
  21. 21.Which is the smallest: 0.4, 0.319, 0.061, 0.42? (a) 0.4 (b) 0.319 (c) 0.061 (d) 0.42
  22. 22.What is the value of the digit 4 in 92.431? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  23. 23.What is the value of the digit 9 in 82.396? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  24. 24.2.01 + 1.9 = ? (a) 3.91 (b) 3.81 (c) 4.01 (d) 2.2
  25. 25.6.81 + 5.1 = ? (a) 7.32 (b) 12.01 (c) 11.81 (d) 11.91
  26. 26.Which is the greatest: 0.038, 0.47, 0.384, 0.4? (a) 0.038 (b) 0.47 (c) 0.384 (d) 0.4
  27. 27.What is the value of the digit 2 in 31.724? (a) 0.2 (b) 0.02 (c) 0.002 (d) 2
  28. 28.9.58 + 4.2 = ? (a) 13.88 (b) 13.78 (c) 10 (d) 13.68
  29. 29.What is the value of the digit 6 in 34.671? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  30. 30.What is the value of the digit 9 in 14.293? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  31. 31.9.03 + 5.1 = ? (a) 9.54 (b) 14.03 (c) 14.23 (d) 14.13
  32. 32.What is the value of the digit 1 in 18.924? (a) 0.1 (b) 0.01 (c) 1 (d) 10
  33. 33.2.91 + 3.6 = ? (a) 6.41 (b) 3.27 (c) 6.61 (d) 6.51
  34. 34.What is the value of the digit 1 in 42.318? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  35. 35.What is the value of the digit 1 in 14.629? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  36. 36.5.85 + 9.4 = ? (a) 15.15 (b) 15.35 (c) 6.79 (d) 15.25
  37. 37.What is the value of the digit 7 in 21.967? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  38. 38.Which is the smallest: 0.032, 0.2, 0.187, 0.27? (a) 0.032 (b) 0.2 (c) 0.187 (d) 0.27
  39. 39.4.84 + 2.7 = ? (a) 7.54 (b) 7.44 (c) 5.11 (d) 7.64
  40. 40.1.68 + 8.7 = ? (a) 10.28 (b) 10.48 (c) 10.38 (d) 2.55

Answer key

  1. 6.84
  2. 60
  3. 5.49
  4. 12.34
  5. 0.078
  6. 5.02
  7. 6.01
  8. 0.46
  9. 0.082
  10. 4.85
  11. 0.3
  12. 5.97
  13. 0.009
  14. 10.94
  15. 0.02
  16. 11.25
  17. 0.31
  18. 3
  19. 3.78
  20. 0.036
  21. 0.061
  22. 0.4
  23. 0.09
  24. 3.91
  25. 11.91
  26. 0.47
  27. 0.02
  28. 13.78
  29. 0.6
  30. 0.09
  31. 14.13
  32. 10
  33. 6.51
  34. 0.01
  35. 10
  36. 15.25
  37. 0.007
  38. 0.032
  39. 7.54
  40. 10.38

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