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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 849 · 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. 1.9.22 + 9.3 = ? (a) 18.62 (b) 10.15 (c) 18.42 (d) 18.52
  2. 2.9.91 + 8.4 = ? (a) 18.21 (b) 18.41 (c) 10.75 (d) 18.31
  3. 3.3.32 + 9.3 = ? (a) 4.25 (b) 12.52 (c) 12.62 (d) 12.72
  4. 4.Which is the smallest: 0.778, 0.88, 0.8, 0.014? (a) 0.778 (b) 0.88 (c) 0.8 (d) 0.014
  5. 5.What is the value of the digit 2 in 32.175? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  6. 6.What is the value of the digit 7 in 74.389? (a) 0.07 (b) 7 (c) 70 (d) 0.7
  7. 7.What is the value of the digit 2 in 86.725? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  8. 8.What is the value of the digit 4 in 32.491? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  9. 9.Which is the smallest: 0.537, 0.6, 0.68, 0.091? (a) 0.537 (b) 0.6 (c) 0.68 (d) 0.091
  10. 10.4.85 + 7.1 = ? (a) 12.05 (b) 5.56 (c) 11.85 (d) 11.95
  11. 11.6.31 + 2.1 = ? (a) 8.41 (b) 6.52 (c) 8.31 (d) 8.51
  12. 12.4.42 + 2.8 = ? (a) 4.7 (b) 7.22 (c) 7.12 (d) 7.32
  13. 13.6.37 + 5.6 = ? (a) 12.07 (b) 11.87 (c) 11.97 (d) 6.93
  14. 14.Which is the smallest: 0.4, 0.078, 0.372, 0.42? (a) 0.4 (b) 0.078 (c) 0.372 (d) 0.42
  15. 15.4.47 + 3.9 = ? (a) 4.86 (b) 8.47 (c) 8.37 (d) 8.27
  16. 16.1.83 + 4.8 = ? (a) 6.63 (b) 6.53 (c) 6.73 (d) 2.31
  17. 17.Which is the greatest: 0.234, 0.094, 0.32, 0.3? (a) 0.234 (b) 0.094 (c) 0.32 (d) 0.3
  18. 18.What is the value of the digit 9 in 98.721? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  19. 19.Which is the smallest: 0.3, 0.092, 0.37, 0.222? (a) 0.3 (b) 0.092 (c) 0.37 (d) 0.222
  20. 20.What is the value of the digit 1 in 41.639? (a) 1 (b) 0.01 (c) 0.1 (d) 10
  21. 21.3.31 + 9.6 = ? (a) 13.01 (b) 12.91 (c) 12.81 (d) 4.27
  22. 22.What is the value of the digit 8 in 68.547? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  23. 23.Which is the greatest: 0.433, 0.089, 0.5, 0.51? (a) 0.433 (b) 0.089 (c) 0.5 (d) 0.51
  24. 24.8.98 + 6.9 = ? (a) 15.98 (b) 15.88 (c) 15.78 (d) 9.67
  25. 25.What is the value of the digit 9 in 52.914? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  26. 26.What is the value of the digit 6 in 86.431? (a) 0.06 (b) 6 (c) 60 (d) 0.6
  27. 27.Which is the greatest: 0.76, 0.069, 0.633, 0.7? (a) 0.76 (b) 0.069 (c) 0.633 (d) 0.7
  28. 28.What is the value of the digit 1 in 19.576? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  29. 29.Which is the smallest: 0.3, 0.093, 0.214, 0.38? (a) 0.3 (b) 0.093 (c) 0.214 (d) 0.38
  30. 30.What is the value of the digit 7 in 13.967? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  31. 31.1.61 + 8.1 = ? (a) 9.81 (b) 9.71 (c) 2.42 (d) 9.61
  32. 32.5.71 + 8.8 = ? (a) 6.59 (b) 14.41 (c) 14.51 (d) 14.61
  33. 33.3.68 + 8.1 = ? (a) 11.88 (b) 11.78 (c) 4.49 (d) 11.68
  34. 34.What is the value of the digit 8 in 48.216? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  35. 35.What is the value of the digit 3 in 38.914? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  36. 36.Which is the greatest: 0.68, 0.534, 0.016, 0.6? (a) 0.68 (b) 0.534 (c) 0.016 (d) 0.6
  37. 37.7.96 + 5.6 = ? (a) 13.46 (b) 13.66 (c) 13.56 (d) 8.52
  38. 38.6.89 + 8.8 = ? (a) 15.59 (b) 15.69 (c) 7.77 (d) 15.79
  39. 39.What is the value of the digit 9 in 41.798? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  40. 40.5.01 + 5.6 = ? (a) 5.57 (b) 10.61 (c) 10.51 (d) 10.71

Answer key

  1. 18.52
  2. 18.31
  3. 12.62
  4. 0.014
  5. 2
  6. 70
  7. 0.02
  8. 0.4
  9. 0.091
  10. 11.95
  11. 8.41
  12. 7.22
  13. 11.97
  14. 0.078
  15. 8.37
  16. 6.63
  17. 0.32
  18. 90
  19. 0.092
  20. 1
  21. 12.91
  22. 8
  23. 0.51
  24. 15.88
  25. 0.9
  26. 6
  27. 0.76
  28. 10
  29. 0.093
  30. 0.007
  31. 9.71
  32. 14.51
  33. 11.78
  34. 8
  35. 30
  36. 0.68
  37. 13.56
  38. 15.69
  39. 0.09
  40. 10.61

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