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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 974 · 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. 1.8.24 + 3.4 = ? (a) 11.54 (b) 11.64 (c) 11.74 (d) 8.58
  2. 2.5.34 + 4.9 = ? (a) 10.34 (b) 5.83 (c) 10.14 (d) 10.24
  3. 3.What is the value of the digit 8 in 84.327? (a) 0.08 (b) 8 (c) 0.8 (d) 80
  4. 4.3.13 + 2.4 = ? (a) 5.53 (b) 3.37 (c) 5.43 (d) 5.63
  5. 5.What is the value of the digit 2 in 26.715? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  6. 6.2.05 + 1.7 = ? (a) 2.22 (b) 3.85 (c) 3.75 (d) 3.65
  7. 7.9.46 + 8.3 = ? (a) 17.86 (b) 17.76 (c) 17.66 (d) 10.29
  8. 8.7.62 + 5.4 = ? (a) 8.16 (b) 12.92 (c) 13.02 (d) 13.12
  9. 9.What is the value of the digit 8 in 36.582? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  10. 10.What is the value of the digit 9 in 91.435? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  11. 11.Which is the smallest: 0.88, 0.8, 0.045, 0.724? (a) 0.88 (b) 0.8 (c) 0.045 (d) 0.724
  12. 12.7.79 + 7.2 = ? (a) 8.51 (b) 14.89 (c) 14.99 (d) 15.09
  13. 13.7.31 + 3.4 = ? (a) 10.81 (b) 7.65 (c) 10.61 (d) 10.71
  14. 14.6.84 + 4.1 = ? (a) 10.94 (b) 10.84 (c) 7.25 (d) 11.04
  15. 15.What is the value of the digit 4 in 96.437? (a) 4 (b) 0.004 (c) 0.4 (d) 0.04
  16. 16.What is the value of the digit 2 in 79.342? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  17. 17.9.11 + 8.7 = ? (a) 9.98 (b) 17.91 (c) 17.71 (d) 17.81
  18. 18.What is the value of the digit 2 in 63.129? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  19. 19.1.24 + 5.1 = ? (a) 6.44 (b) 1.75 (c) 6.24 (d) 6.34
  20. 20.What is the value of the digit 4 in 41.679? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  21. 21.Which is the greatest: 0.069, 0.76, 0.7, 0.665? (a) 0.069 (b) 0.76 (c) 0.7 (d) 0.665
  22. 22.What is the value of the digit 3 in 39.845? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  23. 23.6.49 + 6.1 = ? (a) 7.1 (b) 12.59 (c) 12.49 (d) 12.69
  24. 24.Which is the greatest: 0.319, 0.061, 0.47, 0.4? (a) 0.319 (b) 0.061 (c) 0.47 (d) 0.4
  25. 25.What is the value of the digit 4 in 14.276? (a) 0.4 (b) 0.04 (c) 4 (d) 40
  26. 26.What is the value of the digit 6 in 86.574? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  27. 27.What is the value of the digit 9 in 46.392? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  28. 28.Which is the greatest: 0.398, 0.056, 0.4, 0.46? (a) 0.398 (b) 0.056 (c) 0.4 (d) 0.46
  29. 29.What is the value of the digit 2 in 42.518? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  30. 30.9.61 + 9.1 = ? (a) 10.52 (b) 18.81 (c) 18.61 (d) 18.71
  31. 31.Which is the greatest: 0.029, 0.22, 0.137, 0.2? (a) 0.029 (b) 0.22 (c) 0.137 (d) 0.2
  32. 32.3.81 + 1.6 = ? (a) 5.41 (b) 5.51 (c) 5.31 (d) 3.97
  33. 33.6.01 + 7.6 = ? (a) 13.51 (b) 6.77 (c) 13.61 (d) 13.71
  34. 34.What is the value of the digit 4 in 45.831? (a) 0.04 (b) 40 (c) 4 (d) 0.4
  35. 35.3.73 + 3.3 = ? (a) 7.13 (b) 4.06 (c) 7.03 (d) 6.93
  36. 36.What is the value of the digit 4 in 58.647? (a) 0.4 (b) 0.04 (c) 4 (d) 0.004
  37. 37.Which is the greatest: 0.77, 0.7, 0.083, 0.625? (a) 0.77 (b) 0.7 (c) 0.083 (d) 0.625
  38. 38.6.69 + 1.7 = ? (a) 8.49 (b) 8.29 (c) 8.39 (d) 6.86
  39. 39.Which is the smallest: 0.77, 0.7, 0.099, 0.662? (a) 0.77 (b) 0.7 (c) 0.099 (d) 0.662
  40. 40.1.42 + 5.8 = ? (a) 7.32 (b) 7.12 (c) 7.22 (d) 2

Answer key

  1. 11.64
  2. 10.24
  3. 80
  4. 5.53
  5. 20
  6. 3.75
  7. 17.76
  8. 13.02
  9. 0.08
  10. 90
  11. 0.045
  12. 14.99
  13. 10.71
  14. 10.94
  15. 0.4
  16. 0.002
  17. 17.81
  18. 0.02
  19. 6.34
  20. 40
  21. 0.76
  22. 30
  23. 12.59
  24. 0.47
  25. 4
  26. 6
  27. 0.09
  28. 0.46
  29. 2
  30. 18.71
  31. 0.22
  32. 5.41
  33. 13.61
  34. 40
  35. 7.03
  36. 0.04
  37. 0.77
  38. 8.39
  39. 0.099
  40. 7.22

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