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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 550 · 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.What is the value of the digit 6 in 16.452? (a) 60 (b) 0.6 (c) 0.06 (d) 6
  2. 2.Which is the greatest: 0.771, 0.87, 0.012, 0.8? (a) 0.771 (b) 0.87 (c) 0.012 (d) 0.8
  3. 3.Which is the smallest: 0.068, 0.27, 0.2, 0.115? (a) 0.068 (b) 0.27 (c) 0.2 (d) 0.115
  4. 4.1.14 + 8.6 = ? (a) 2 (b) 9.64 (c) 9.84 (d) 9.74
  5. 5.Which is the smallest: 0.541, 0.023, 0.6, 0.63? (a) 0.541 (b) 0.023 (c) 0.6 (d) 0.63
  6. 6.7.16 + 6.2 = ? (a) 13.26 (b) 13.46 (c) 7.78 (d) 13.36
  7. 7.4.52 + 7.4 = ? (a) 12.02 (b) 11.92 (c) 5.26 (d) 11.82
  8. 8.4.67 + 3.5 = ? (a) 8.27 (b) 8.07 (c) 8.17 (d) 5.02
  9. 9.3.21 + 7.7 = ? (a) 10.91 (b) 3.98 (c) 10.81 (d) 11.01
  10. 10.Which is the greatest: 0.167, 0.2, 0.033, 0.28? (a) 0.167 (b) 0.2 (c) 0.033 (d) 0.28
  11. 11.2.04 + 6.3 = ? (a) 8.24 (b) 8.34 (c) 2.67 (d) 8.44
  12. 12.7.91 + 9.1 = ? (a) 8.82 (b) 17.01 (c) 17.11 (d) 16.91
  13. 13.Which is the greatest: 0.549, 0.099, 0.6, 0.68? (a) 0.549 (b) 0.099 (c) 0.6 (d) 0.68
  14. 14.5.58 + 3.8 = ? (a) 5.96 (b) 9.48 (c) 9.38 (d) 9.28
  15. 15.What is the value of the digit 5 in 54.691? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  16. 16.2.41 + 3.6 = ? (a) 6.01 (b) 2.77 (c) 6.11 (d) 5.91
  17. 17.What is the value of the digit 9 in 19.837? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  18. 18.3.21 + 3.4 = ? (a) 3.55 (b) 6.71 (c) 6.61 (d) 6.51
  19. 19.Which is the smallest: 0.318, 0.054, 0.4, 0.41? (a) 0.318 (b) 0.054 (c) 0.4 (d) 0.41
  20. 20.Which is the greatest: 0.011, 0.432, 0.52, 0.5? (a) 0.011 (b) 0.432 (c) 0.52 (d) 0.5
  21. 21.What is the value of the digit 2 in 73.245? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  22. 22.4.11 + 3.3 = ? (a) 7.31 (b) 4.44 (c) 7.41 (d) 7.51
  23. 23.Which is the greatest: 0.185, 0.2, 0.23, 0.011? (a) 0.185 (b) 0.2 (c) 0.23 (d) 0.011
  24. 24.1.43 + 9.1 = ? (a) 10.63 (b) 2.34 (c) 10.43 (d) 10.53
  25. 25.4.22 + 1.7 = ? (a) 5.92 (b) 6.02 (c) 5.82 (d) 4.39
  26. 26.Which is the greatest: 0.8, 0.029, 0.82, 0.766? (a) 0.8 (b) 0.029 (c) 0.82 (d) 0.766
  27. 27.Which is the greatest: 0.024, 0.88, 0.8, 0.778? (a) 0.024 (b) 0.88 (c) 0.8 (d) 0.778
  28. 28.1.85 + 2.8 = ? (a) 2.13 (b) 4.55 (c) 4.65 (d) 4.75
  29. 29.Which is the greatest: 0.435, 0.52, 0.041, 0.5? (a) 0.435 (b) 0.52 (c) 0.041 (d) 0.5
  30. 30.1.31 + 1.7 = ? (a) 2.91 (b) 3.11 (c) 3.01 (d) 1.48
  31. 31.Which is the smallest: 0.88, 0.091, 0.784, 0.8? (a) 0.88 (b) 0.091 (c) 0.784 (d) 0.8
  32. 32.9.13 + 9.6 = ? (a) 18.73 (b) 18.63 (c) 10.09 (d) 18.83
  33. 33.What is the value of the digit 7 in 36.178? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  34. 34.Which is the smallest: 0.6, 0.62, 0.594, 0.052? (a) 0.6 (b) 0.62 (c) 0.594 (d) 0.052
  35. 35.What is the value of the digit 3 in 38.126? (a) 0.3 (b) 0.03 (c) 3 (d) 30
  36. 36.Which is the greatest: 0.454, 0.5, 0.067, 0.59? (a) 0.454 (b) 0.5 (c) 0.067 (d) 0.59
  37. 37.3.61 + 2.8 = ? (a) 6.31 (b) 3.89 (c) 6.41 (d) 6.51
  38. 38.Which is the greatest: 0.39, 0.047, 0.266, 0.3? (a) 0.39 (b) 0.047 (c) 0.266 (d) 0.3
  39. 39.Which is the smallest: 0.048, 0.7, 0.635, 0.72? (a) 0.048 (b) 0.7 (c) 0.635 (d) 0.72
  40. 40.What is the value of the digit 7 in 26.785? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7

Answer key

  1. 6
  2. 0.87
  3. 0.068
  4. 9.74
  5. 0.023
  6. 13.36
  7. 11.92
  8. 8.17
  9. 10.91
  10. 0.28
  11. 8.34
  12. 17.01
  13. 0.68
  14. 9.38
  15. 50
  16. 6.01
  17. 9
  18. 6.61
  19. 0.054
  20. 0.52
  21. 0.2
  22. 7.41
  23. 0.23
  24. 10.53
  25. 5.92
  26. 0.82
  27. 0.88
  28. 4.65
  29. 0.52
  30. 3.01
  31. 0.091
  32. 18.73
  33. 0.07
  34. 0.052
  35. 30
  36. 0.59
  37. 6.41
  38. 0.39
  39. 0.048
  40. 0.7

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