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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 734 · 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.Which is the smallest: 0.39, 0.093, 0.213, 0.3? (a) 0.39 (b) 0.093 (c) 0.213 (d) 0.3
  2. 2.3.01 + 7.2 = ? (a) 10.11 (b) 10.31 (c) 10.21 (d) 3.73
  3. 3.2.41 + 3.1 = ? (a) 5.51 (b) 5.61 (c) 5.41 (d) 2.72
  4. 4.8.44 + 1.8 = ? (a) 10.14 (b) 8.62 (c) 10.24 (d) 10.34
  5. 5.2.11 + 9.1 = ? (a) 3.02 (b) 11.21 (c) 11.31 (d) 11.11
  6. 6.Which is the greatest: 0.35, 0.029, 0.274, 0.3? (a) 0.35 (b) 0.029 (c) 0.274 (d) 0.3
  7. 7.Which is the greatest: 0.293, 0.047, 0.34, 0.3? (a) 0.293 (b) 0.047 (c) 0.34 (d) 0.3
  8. 8.4.73 + 3.4 = ? (a) 5.07 (b) 8.23 (c) 8.13 (d) 8.03
  9. 9.What is the value of the digit 5 in 64.753? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  10. 10.Which is the smallest: 0.6, 0.61, 0.555, 0.032? (a) 0.6 (b) 0.61 (c) 0.555 (d) 0.032
  11. 11.2.21 + 4.8 = ? (a) 7.11 (b) 6.91 (c) 2.69 (d) 7.01
  12. 12.What is the value of the digit 5 in 65.287? (a) 0.05 (b) 5 (c) 0.5 (d) 50
  13. 13.6.48 + 4.1 = ? (a) 10.58 (b) 10.68 (c) 10.48 (d) 6.89
  14. 14.3.92 + 1.4 = ? (a) 5.22 (b) 5.42 (c) 5.32 (d) 4.06
  15. 15.Which is the greatest: 0.41, 0.323, 0.4, 0.035? (a) 0.41 (b) 0.323 (c) 0.4 (d) 0.035
  16. 16.9.86 + 3.9 = ? (a) 10.25 (b) 13.76 (c) 13.86 (d) 13.66
  17. 17.Which is the greatest: 0.063, 0.62, 0.548, 0.6? (a) 0.063 (b) 0.62 (c) 0.548 (d) 0.6
  18. 18.Which is the greatest: 0.356, 0.45, 0.4, 0.043? (a) 0.356 (b) 0.45 (c) 0.4 (d) 0.043
  19. 19.Which is the smallest: 0.029, 0.4, 0.315, 0.41? (a) 0.029 (b) 0.4 (c) 0.315 (d) 0.41
  20. 20.Which is the greatest: 0.2, 0.123, 0.067, 0.22? (a) 0.2 (b) 0.123 (c) 0.067 (d) 0.22
  21. 21.What is the value of the digit 9 in 93.578? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  22. 22.3.59 + 9.1 = ? (a) 12.59 (b) 12.69 (c) 12.79 (d) 4.5
  23. 23.3.48 + 4.1 = ? (a) 3.89 (b) 7.48 (c) 7.58 (d) 7.68
  24. 24.Which is the smallest: 0.37, 0.3, 0.252, 0.056? (a) 0.37 (b) 0.3 (c) 0.252 (d) 0.056
  25. 25.What is the value of the digit 2 in 42.583? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  26. 26.Which is the smallest: 0.033, 0.4, 0.342, 0.41? (a) 0.033 (b) 0.4 (c) 0.342 (d) 0.41
  27. 27.What is the value of the digit 4 in 34.892? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  28. 28.2.89 + 2.6 = ? (a) 5.59 (b) 5.39 (c) 5.49 (d) 3.15
  29. 29.Which is the greatest: 0.33, 0.083, 0.3, 0.211? (a) 0.33 (b) 0.083 (c) 0.3 (d) 0.211
  30. 30.8.41 + 1.6 = ? (a) 8.57 (b) 10.11 (c) 9.91 (d) 10.01
  31. 31.1.83 + 2.9 = ? (a) 4.83 (b) 4.73 (c) 4.63 (d) 2.12
  32. 32.4.65 + 1.1 = ? (a) 5.75 (b) 5.65 (c) 5.85 (d) 4.76
  33. 33.4.36 + 5.8 = ? (a) 10.16 (b) 10.26 (c) 4.94 (d) 10.06
  34. 34.Which is the smallest: 0.8, 0.775, 0.077, 0.88? (a) 0.8 (b) 0.775 (c) 0.077 (d) 0.88
  35. 35.What is the value of the digit 4 in 47.982? (a) 4 (b) 0.4 (c) 0.04 (d) 40
  36. 36.9.03 + 9.6 = ? (a) 18.53 (b) 18.73 (c) 18.63 (d) 9.99
  37. 37.7.48 + 2.7 = ? (a) 10.28 (b) 7.75 (c) 10.08 (d) 10.18
  38. 38.4.16 + 4.3 = ? (a) 8.56 (b) 8.36 (c) 8.46 (d) 4.59
  39. 39.6.31 + 2.5 = ? (a) 6.56 (b) 8.91 (c) 8.81 (d) 8.71
  40. 40.What is the value of the digit 8 in 81.756? (a) 80 (b) 8 (c) 0.08 (d) 0.8

Answer key

  1. 0.093
  2. 10.21
  3. 5.51
  4. 10.24
  5. 11.21
  6. 0.35
  7. 0.34
  8. 8.13
  9. 0.05
  10. 0.032
  11. 7.01
  12. 5
  13. 10.58
  14. 5.32
  15. 0.41
  16. 13.76
  17. 0.62
  18. 0.45
  19. 0.029
  20. 0.22
  21. 90
  22. 12.69
  23. 7.58
  24. 0.056
  25. 2
  26. 0.033
  27. 4
  28. 5.49
  29. 0.33
  30. 10.01
  31. 4.73
  32. 5.75
  33. 10.16
  34. 0.077
  35. 40
  36. 18.63
  37. 10.18
  38. 8.46
  39. 8.81
  40. 80

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