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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 785 · 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. 1.3.59 + 2.8 = ? (a) 3.87 (b) 6.49 (c) 6.39 (d) 6.29
  2. 2.5.47 + 3.5 = ? (a) 9.07 (b) 8.87 (c) 5.82 (d) 8.97
  3. 3.Which is the greatest: 0.36, 0.291, 0.076, 0.3? (a) 0.36 (b) 0.291 (c) 0.076 (d) 0.3
  4. 4.Which is the greatest: 0.592, 0.62, 0.083, 0.6? (a) 0.592 (b) 0.62 (c) 0.083 (d) 0.6
  5. 5.What is the value of the digit 2 in 91.243? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  6. 6.Which is the greatest: 0.079, 0.3, 0.222, 0.32? (a) 0.079 (b) 0.3 (c) 0.222 (d) 0.32
  7. 7.Which is the smallest: 0.72, 0.084, 0.617, 0.7? (a) 0.72 (b) 0.084 (c) 0.617 (d) 0.7
  8. 8.1.13 + 7.9 = ? (a) 1.92 (b) 8.93 (c) 9.13 (d) 9.03
  9. 9.Which is the smallest: 0.021, 0.364, 0.43, 0.4? (a) 0.021 (b) 0.364 (c) 0.43 (d) 0.4
  10. 10.What is the value of the digit 4 in 31.746? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  11. 11.Which is the greatest: 0.39, 0.211, 0.031, 0.3? (a) 0.39 (b) 0.211 (c) 0.031 (d) 0.3
  12. 12.4.84 + 1.1 = ? (a) 5.84 (b) 4.95 (c) 6.04 (d) 5.94
  13. 13.What is the value of the digit 7 in 78.395? (a) 7 (b) 70 (c) 0.07 (d) 0.7
  14. 14.Which is the smallest: 0.046, 0.73, 0.7, 0.619? (a) 0.046 (b) 0.73 (c) 0.7 (d) 0.619
  15. 15.What is the value of the digit 1 in 31.926? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  16. 16.What is the value of the digit 8 in 62.857? (a) 8 (b) 0.08 (c) 0.008 (d) 0.8
  17. 17.Which is the smallest: 0.79, 0.7, 0.614, 0.057? (a) 0.79 (b) 0.7 (c) 0.614 (d) 0.057
  18. 18.Which is the smallest: 0.8, 0.89, 0.733, 0.098? (a) 0.8 (b) 0.89 (c) 0.733 (d) 0.098
  19. 19.What is the value of the digit 5 in 83.259? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  20. 20.Which is the greatest: 0.56, 0.092, 0.495, 0.5? (a) 0.56 (b) 0.092 (c) 0.495 (d) 0.5
  21. 21.6.51 + 4.2 = ? (a) 10.61 (b) 6.93 (c) 10.81 (d) 10.71
  22. 22.What is the value of the digit 2 in 29.347? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  23. 23.1.43 + 6.2 = ? (a) 7.73 (b) 7.63 (c) 7.53 (d) 2.05
  24. 24.Which is the greatest: 0.524, 0.6, 0.64, 0.099? (a) 0.524 (b) 0.6 (c) 0.64 (d) 0.099
  25. 25.Which is the smallest: 0.3, 0.011, 0.247, 0.32? (a) 0.3 (b) 0.011 (c) 0.247 (d) 0.32
  26. 26.2.18 + 2.2 = ? (a) 2.4 (b) 4.38 (c) 4.28 (d) 4.48
  27. 27.7.38 + 1.4 = ? (a) 8.88 (b) 7.52 (c) 8.68 (d) 8.78
  28. 28.9.39 + 4.1 = ? (a) 13.59 (b) 13.39 (c) 9.8 (d) 13.49
  29. 29.What is the value of the digit 9 in 46.791? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  30. 30.What is the value of the digit 9 in 35.924? (a) 0.09 (b) 0.9 (c) 9 (d) 0.009
  31. 31.6.06 + 6.4 = ? (a) 6.7 (b) 12.56 (c) 12.36 (d) 12.46
  32. 32.4.01 + 9.9 = ? (a) 5 (b) 14.01 (c) 13.81 (d) 13.91
  33. 33.1.15 + 5.9 = ? (a) 6.95 (b) 7.05 (c) 7.15 (d) 1.74
  34. 34.Which is the smallest: 0.061, 0.7, 0.73, 0.641? (a) 0.061 (b) 0.7 (c) 0.73 (d) 0.641
  35. 35.6.48 + 8.9 = ? (a) 7.37 (b) 15.48 (c) 15.28 (d) 15.38
  36. 36.Which is the greatest: 0.037, 0.23, 0.2, 0.189? (a) 0.037 (b) 0.23 (c) 0.2 (d) 0.189
  37. 37.Which is the greatest: 0.041, 0.35, 0.275, 0.3? (a) 0.041 (b) 0.35 (c) 0.275 (d) 0.3
  38. 38.Which is the greatest: 0.7, 0.695, 0.79, 0.079? (a) 0.7 (b) 0.695 (c) 0.79 (d) 0.079
  39. 39.What is the value of the digit 4 in 17.496? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  40. 40.1.37 + 3.6 = ? (a) 5.07 (b) 4.97 (c) 1.73 (d) 4.87

Answer key

  1. 6.39
  2. 8.97
  3. 0.36
  4. 0.62
  5. 0.2
  6. 0.32
  7. 0.084
  8. 9.03
  9. 0.021
  10. 0.04
  11. 0.39
  12. 5.94
  13. 70
  14. 0.046
  15. 1
  16. 0.8
  17. 0.057
  18. 0.098
  19. 0.05
  20. 0.56
  21. 10.71
  22. 20
  23. 7.63
  24. 0.64
  25. 0.011
  26. 4.38
  27. 8.78
  28. 13.49
  29. 0.09
  30. 0.9
  31. 12.46
  32. 13.91
  33. 7.05
  34. 0.061
  35. 15.38
  36. 0.23
  37. 0.35
  38. 0.79
  39. 0.4
  40. 4.97

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