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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 888 · 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 5 in 49.735? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  2. 2.7.58 + 7.1 = ? (a) 8.29 (b) 14.68 (c) 14.78 (d) 14.58
  3. 3.What is the value of the digit 4 in 17.456? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  4. 4.5.62 + 9.1 = ? (a) 14.82 (b) 6.53 (c) 14.62 (d) 14.72
  5. 5.8.83 + 3.4 = ? (a) 12.33 (b) 12.23 (c) 9.17 (d) 12.13
  6. 6.Which is the greatest: 0.683, 0.036, 0.74, 0.7? (a) 0.683 (b) 0.036 (c) 0.74 (d) 0.7
  7. 7.3.52 + 9.5 = ? (a) 13.12 (b) 12.92 (c) 13.02 (d) 4.47
  8. 8.Which is the greatest: 0.89, 0.014, 0.753, 0.8? (a) 0.89 (b) 0.014 (c) 0.753 (d) 0.8
  9. 9.5.69 + 3.6 = ? (a) 9.39 (b) 6.05 (c) 9.29 (d) 9.19
  10. 10.6.99 + 1.9 = ? (a) 7.18 (b) 8.89 (c) 8.79 (d) 8.99
  11. 11.Which is the greatest: 0.2, 0.121, 0.052, 0.22? (a) 0.2 (b) 0.121 (c) 0.052 (d) 0.22
  12. 12.Which is the smallest: 0.375, 0.48, 0.085, 0.4? (a) 0.375 (b) 0.48 (c) 0.085 (d) 0.4
  13. 13.What is the value of the digit 2 in 53.912? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  14. 14.Which is the smallest: 0.8, 0.84, 0.016, 0.785? (a) 0.8 (b) 0.84 (c) 0.016 (d) 0.785
  15. 15.6.81 + 9.6 = ? (a) 7.77 (b) 16.51 (c) 16.31 (d) 16.41
  16. 16.5.88 + 6.4 = ? (a) 6.52 (b) 12.18 (c) 12.38 (d) 12.28
  17. 17.Which is the greatest: 0.055, 0.82, 0.8, 0.738? (a) 0.055 (b) 0.82 (c) 0.8 (d) 0.738
  18. 18.7.04 + 9.2 = ? (a) 16.34 (b) 16.14 (c) 7.96 (d) 16.24
  19. 19.5.77 + 7.6 = ? (a) 13.27 (b) 6.53 (c) 13.37 (d) 13.47
  20. 20.Which is the smallest: 0.2, 0.23, 0.079, 0.153? (a) 0.2 (b) 0.23 (c) 0.079 (d) 0.153
  21. 21.What is the value of the digit 3 in 27.935? (a) 0.3 (b) 0.003 (c) 3 (d) 0.03
  22. 22.Which is the greatest: 0.61, 0.588, 0.061, 0.6? (a) 0.61 (b) 0.588 (c) 0.061 (d) 0.6
  23. 23.Which is the smallest: 0.2, 0.197, 0.056, 0.21? (a) 0.2 (b) 0.197 (c) 0.056 (d) 0.21
  24. 24.What is the value of the digit 4 in 73.481? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  25. 25.What is the value of the digit 7 in 49.257? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  26. 26.8.55 + 2.1 = ? (a) 10.75 (b) 8.76 (c) 10.65 (d) 10.55
  27. 27.9.44 + 1.8 = ? (a) 11.34 (b) 11.24 (c) 11.14 (d) 9.62
  28. 28.What is the value of the digit 4 in 46.825? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  29. 29.Which is the smallest: 0.077, 0.162, 0.25, 0.2? (a) 0.077 (b) 0.162 (c) 0.25 (d) 0.2
  30. 30.What is the value of the digit 7 in 67.138? (a) 70 (b) 7 (c) 0.7 (d) 0.07
  31. 31.What is the value of the digit 9 in 29.514? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  32. 32.Which is the smallest: 0.4, 0.326, 0.46, 0.083? (a) 0.4 (b) 0.326 (c) 0.46 (d) 0.083
  33. 33.3.37 + 2.4 = ? (a) 5.77 (b) 5.87 (c) 5.67 (d) 3.61
  34. 34.What is the value of the digit 4 in 63.814? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  35. 35.9.41 + 2.8 = ? (a) 12.11 (b) 12.31 (c) 12.21 (d) 9.69
  36. 36.5.55 + 5.2 = ? (a) 10.65 (b) 10.85 (c) 10.75 (d) 6.07
  37. 37.What is the value of the digit 7 in 89.572? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  38. 38.What is the value of the digit 4 in 24.739? (a) 0.4 (b) 0.04 (c) 4 (d) 40
  39. 39.Which is the greatest: 0.028, 0.7, 0.672, 0.79? (a) 0.028 (b) 0.7 (c) 0.672 (d) 0.79
  40. 40.What is the value of the digit 7 in 63.274? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7

Answer key

  1. 0.005
  2. 14.68
  3. 0.4
  4. 14.72
  5. 12.23
  6. 0.74
  7. 13.02
  8. 0.89
  9. 9.29
  10. 8.89
  11. 0.22
  12. 0.085
  13. 0.002
  14. 0.016
  15. 16.41
  16. 12.28
  17. 0.82
  18. 16.24
  19. 13.37
  20. 0.079
  21. 0.03
  22. 0.61
  23. 0.056
  24. 0.4
  25. 0.007
  26. 10.65
  27. 11.24
  28. 40
  29. 0.077
  30. 7
  31. 9
  32. 0.083
  33. 5.77
  34. 0.004
  35. 12.21
  36. 10.75
  37. 0.07
  38. 4
  39. 0.79
  40. 0.07

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