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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 907 · 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: 0.236, 0.3, 0.35, 0.086? (a) 0.236 (b) 0.3 (c) 0.35 (d) 0.086
  2. 2.6.48 + 9.7 = ? (a) 16.18 (b) 7.45 (c) 16.08 (d) 16.28
  3. 3.Which is the smallest: 0.87, 0.711, 0.8, 0.081? (a) 0.87 (b) 0.711 (c) 0.8 (d) 0.081
  4. 4.Which is the greatest: 0.3, 0.31, 0.082, 0.236? (a) 0.3 (b) 0.31 (c) 0.082 (d) 0.236
  5. 5.Which is the greatest: 0.457, 0.5, 0.59, 0.017? (a) 0.457 (b) 0.5 (c) 0.59 (d) 0.017
  6. 6.7.48 + 7.1 = ? (a) 14.68 (b) 8.19 (c) 14.58 (d) 14.48
  7. 7.1.71 + 3.4 = ? (a) 5.01 (b) 5.21 (c) 5.11 (d) 2.05
  8. 8.What is the value of the digit 6 in 61.987? (a) 60 (b) 6 (c) 0.6 (d) 0.06
  9. 9.Which is the smallest: 0.048, 0.3, 0.291, 0.32? (a) 0.048 (b) 0.3 (c) 0.291 (d) 0.32
  10. 10.Which is the smallest: 0.5, 0.489, 0.049, 0.52? (a) 0.5 (b) 0.489 (c) 0.049 (d) 0.52
  11. 11.6.93 + 4.1 = ? (a) 11.13 (b) 7.34 (c) 11.03 (d) 10.93
  12. 12.1.61 + 9.8 = ? (a) 11.51 (b) 11.31 (c) 2.59 (d) 11.41
  13. 13.Which is the smallest: 0.389, 0.058, 0.42, 0.4? (a) 0.389 (b) 0.058 (c) 0.42 (d) 0.4
  14. 14.What is the value of the digit 1 in 52.714? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  15. 15.What is the value of the digit 9 in 42.913? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  16. 16.Which is the greatest: 0.5, 0.53, 0.468, 0.051? (a) 0.5 (b) 0.53 (c) 0.468 (d) 0.051
  17. 17.What is the value of the digit 9 in 91.746? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  18. 18.9.23 + 1.4 = ? (a) 9.37 (b) 10.53 (c) 10.73 (d) 10.63
  19. 19.9.13 + 4.2 = ? (a) 13.43 (b) 9.55 (c) 13.23 (d) 13.33
  20. 20.Which is the greatest: 0.051, 0.114, 0.25, 0.2? (a) 0.051 (b) 0.114 (c) 0.25 (d) 0.2
  21. 21.6.31 + 9.5 = ? (a) 15.91 (b) 7.26 (c) 15.71 (d) 15.81
  22. 22.Which is the smallest: 0.746, 0.84, 0.8, 0.031? (a) 0.746 (b) 0.84 (c) 0.8 (d) 0.031
  23. 23.Which is the smallest: 0.26, 0.094, 0.153, 0.2? (a) 0.26 (b) 0.094 (c) 0.153 (d) 0.2
  24. 24.3.71 + 9.8 = ? (a) 13.41 (b) 13.51 (c) 4.69 (d) 13.61
  25. 25.Which is the smallest: 0.028, 0.3, 0.256, 0.37? (a) 0.028 (b) 0.3 (c) 0.256 (d) 0.37
  26. 26.Which is the greatest: 0.053, 0.766, 0.81, 0.8? (a) 0.053 (b) 0.766 (c) 0.81 (d) 0.8
  27. 27.2.28 + 4.9 = ? (a) 7.08 (b) 2.77 (c) 7.28 (d) 7.18
  28. 28.What is the value of the digit 2 in 27.493? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  29. 29.What is the value of the digit 1 in 26.314? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  30. 30.What is the value of the digit 2 in 92.685? (a) 0.2 (b) 0.02 (c) 2 (d) 20
  31. 31.Which is the greatest: 0.029, 0.76, 0.664, 0.7? (a) 0.029 (b) 0.76 (c) 0.664 (d) 0.7
  32. 32.2.44 + 1.8 = ? (a) 4.14 (b) 4.34 (c) 4.24 (d) 2.62
  33. 33.3.63 + 9.2 = ? (a) 12.93 (b) 4.55 (c) 12.83 (d) 12.73
  34. 34.Which is the greatest: 0.016, 0.622, 0.7, 0.78? (a) 0.016 (b) 0.622 (c) 0.7 (d) 0.78
  35. 35.Which is the smallest: 0.59, 0.082, 0.5, 0.445? (a) 0.59 (b) 0.082 (c) 0.5 (d) 0.445
  36. 36.Which is the smallest: 0.792, 0.088, 0.82, 0.8? (a) 0.792 (b) 0.088 (c) 0.82 (d) 0.8
  37. 37.7.39 + 5.6 = ? (a) 12.89 (b) 12.99 (c) 13.09 (d) 7.95
  38. 38.Which is the greatest: 0.2, 0.179, 0.22, 0.037? (a) 0.2 (b) 0.179 (c) 0.22 (d) 0.037
  39. 39.Which is the greatest: 0.75, 0.615, 0.067, 0.7? (a) 0.75 (b) 0.615 (c) 0.067 (d) 0.7
  40. 40.Which is the greatest: 0.55, 0.5, 0.022, 0.431? (a) 0.55 (b) 0.5 (c) 0.022 (d) 0.431

Answer key

  1. 0.086
  2. 16.18
  3. 0.081
  4. 0.31
  5. 0.59
  6. 14.58
  7. 5.11
  8. 60
  9. 0.048
  10. 0.049
  11. 11.03
  12. 11.41
  13. 0.058
  14. 0.01
  15. 0.9
  16. 0.53
  17. 90
  18. 10.63
  19. 13.33
  20. 0.25
  21. 15.81
  22. 0.031
  23. 0.094
  24. 13.51
  25. 0.028
  26. 0.81
  27. 7.18
  28. 20
  29. 0.01
  30. 2
  31. 0.76
  32. 4.24
  33. 12.83
  34. 0.78
  35. 0.082
  36. 0.088
  37. 12.99
  38. 0.22
  39. 0.75
  40. 0.55

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