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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 16 · 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 3 in 23.987? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  2. 2.9.53 + 1.6 = ? (a) 11.13 (b) 11.23 (c) 9.69 (d) 11.03
  3. 3.Which is the smallest: 0.23, 0.2, 0.021, 0.161? (a) 0.23 (b) 0.2 (c) 0.021 (d) 0.161
  4. 4.Which is the greatest: 0.651, 0.066, 0.7, 0.77? (a) 0.651 (b) 0.066 (c) 0.7 (d) 0.77
  5. 5.Which is the smallest: 0.4, 0.393, 0.033, 0.41? (a) 0.4 (b) 0.393 (c) 0.033 (d) 0.41
  6. 6.Which is the greatest: 0.635, 0.73, 0.7, 0.044? (a) 0.635 (b) 0.73 (c) 0.7 (d) 0.044
  7. 7.Which is the smallest: 0.524, 0.61, 0.082, 0.6? (a) 0.524 (b) 0.61 (c) 0.082 (d) 0.6
  8. 8.Which is the greatest: 0.067, 0.544, 0.6, 0.67? (a) 0.067 (b) 0.544 (c) 0.6 (d) 0.67
  9. 9.What is the value of the digit 1 in 39.241? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  10. 10.Which is the greatest: 0.5, 0.424, 0.52, 0.061? (a) 0.5 (b) 0.424 (c) 0.52 (d) 0.061
  11. 11.What is the value of the digit 3 in 95.631? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  12. 12.Which is the smallest: 0.7, 0.73, 0.663, 0.038? (a) 0.7 (b) 0.73 (c) 0.663 (d) 0.038
  13. 13.Which is the greatest: 0.646, 0.76, 0.7, 0.027? (a) 0.646 (b) 0.76 (c) 0.7 (d) 0.027
  14. 14.9.71 + 8.8 = ? (a) 18.61 (b) 10.59 (c) 18.51 (d) 18.41
  15. 15.Which is the smallest: 0.779, 0.83, 0.8, 0.044? (a) 0.779 (b) 0.83 (c) 0.8 (d) 0.044
  16. 16.What is the value of the digit 2 in 81.492? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  17. 17.Which is the smallest: 0.277, 0.37, 0.3, 0.014? (a) 0.277 (b) 0.37 (c) 0.3 (d) 0.014
  18. 18.What is the value of the digit 6 in 97.614? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  19. 19.8.76 + 8.9 = ? (a) 17.76 (b) 17.56 (c) 17.66 (d) 9.65
  20. 20.Which is the greatest: 0.6, 0.542, 0.62, 0.027? (a) 0.6 (b) 0.542 (c) 0.62 (d) 0.027
  21. 21.6.32 + 1.8 = ? (a) 8.12 (b) 8.02 (c) 8.22 (d) 6.5
  22. 22.8.34 + 7.4 = ? (a) 15.64 (b) 15.74 (c) 9.08 (d) 15.84
  23. 23.Which is the smallest: 0.534, 0.65, 0.6, 0.013? (a) 0.534 (b) 0.65 (c) 0.6 (d) 0.013
  24. 24.Which is the smallest: 0.088, 0.167, 0.25, 0.2? (a) 0.088 (b) 0.167 (c) 0.25 (d) 0.2
  25. 25.7.15 + 5.9 = ? (a) 13.15 (b) 7.74 (c) 12.95 (d) 13.05
  26. 26.3.49 + 1.3 = ? (a) 4.89 (b) 4.79 (c) 3.62 (d) 4.69
  27. 27.Which is the smallest: 0.036, 0.5, 0.411, 0.53? (a) 0.036 (b) 0.5 (c) 0.411 (d) 0.53
  28. 28.1.91 + 2.1 = ? (a) 4.11 (b) 2.12 (c) 3.91 (d) 4.01
  29. 29.Which is the greatest: 0.4, 0.081, 0.43, 0.319? (a) 0.4 (b) 0.081 (c) 0.43 (d) 0.319
  30. 30.2.85 + 2.7 = ? (a) 5.45 (b) 5.65 (c) 5.55 (d) 3.12
  31. 31.Which is the greatest: 0.6, 0.582, 0.024, 0.63? (a) 0.6 (b) 0.582 (c) 0.024 (d) 0.63
  32. 32.What is the value of the digit 8 in 68.431? (a) 80 (b) 0.08 (c) 0.8 (d) 8
  33. 33.Which is the greatest: 0.385, 0.46, 0.4, 0.014? (a) 0.385 (b) 0.46 (c) 0.4 (d) 0.014
  34. 34.3.55 + 8.5 = ? (a) 4.4 (b) 11.95 (c) 12.05 (d) 12.15
  35. 35.4.92 + 1.6 = ? (a) 6.52 (b) 6.62 (c) 6.42 (d) 5.08
  36. 36.3.17 + 6.6 = ? (a) 9.77 (b) 3.83 (c) 9.67 (d) 9.87
  37. 37.2.78 + 4.4 = ? (a) 7.08 (b) 7.28 (c) 3.22 (d) 7.18
  38. 38.What is the value of the digit 9 in 27.916? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  39. 39.What is the value of the digit 1 in 61.295? (a) 10 (b) 0.01 (c) 0.1 (d) 1
  40. 40.Which is the greatest: 0.424, 0.56, 0.098, 0.5? (a) 0.424 (b) 0.56 (c) 0.098 (d) 0.5

Answer key

  1. 3
  2. 11.13
  3. 0.021
  4. 0.77
  5. 0.033
  6. 0.73
  7. 0.082
  8. 0.67
  9. 0.001
  10. 0.52
  11. 0.03
  12. 0.038
  13. 0.76
  14. 18.51
  15. 0.044
  16. 0.002
  17. 0.014
  18. 0.6
  19. 17.66
  20. 0.62
  21. 8.12
  22. 15.74
  23. 0.013
  24. 0.088
  25. 13.05
  26. 4.79
  27. 0.036
  28. 4.01
  29. 0.43
  30. 5.55
  31. 0.63
  32. 8
  33. 0.46
  34. 12.05
  35. 6.52
  36. 9.77
  37. 7.18
  38. 0.9
  39. 1
  40. 0.56

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