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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 543 · 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 63.245? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  2. 2.What is the value of the digit 7 in 83.179? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  3. 3.What is the value of the digit 7 in 72.869? (a) 0.7 (b) 7 (c) 70 (d) 0.07
  4. 4.6.63 + 5.1 = ? (a) 7.14 (b) 11.73 (c) 11.83 (d) 11.63
  5. 5.6.51 + 2.9 = ? (a) 6.8 (b) 9.41 (c) 9.51 (d) 9.31
  6. 6.Which is the greatest: 0.155, 0.031, 0.25, 0.2? (a) 0.155 (b) 0.031 (c) 0.25 (d) 0.2
  7. 7.Which is the greatest: 0.239, 0.3, 0.36, 0.032? (a) 0.239 (b) 0.3 (c) 0.36 (d) 0.032
  8. 8.5.79 + 4.4 = ? (a) 6.23 (b) 10.09 (c) 10.19 (d) 10.29
  9. 9.Which is the smallest: 0.79, 0.018, 0.657, 0.7? (a) 0.79 (b) 0.018 (c) 0.657 (d) 0.7
  10. 10.Which is the greatest: 0.029, 0.754, 0.87, 0.8? (a) 0.029 (b) 0.754 (c) 0.87 (d) 0.8
  11. 11.Which is the greatest: 0.74, 0.7, 0.068, 0.675? (a) 0.74 (b) 0.7 (c) 0.068 (d) 0.675
  12. 12.8.02 + 3.7 = ? (a) 11.82 (b) 11.62 (c) 11.72 (d) 8.39
  13. 13.Which is the smallest: 0.6, 0.521, 0.034, 0.69? (a) 0.6 (b) 0.521 (c) 0.034 (d) 0.69
  14. 14.What is the value of the digit 2 in 91.426? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  15. 15.Which is the greatest: 0.076, 0.8, 0.89, 0.744? (a) 0.076 (b) 0.8 (c) 0.89 (d) 0.744
  16. 16.Which is the greatest: 0.72, 0.612, 0.7, 0.019? (a) 0.72 (b) 0.612 (c) 0.7 (d) 0.019
  17. 17.Which is the smallest: 0.094, 0.37, 0.232, 0.3? (a) 0.094 (b) 0.37 (c) 0.232 (d) 0.3
  18. 18.Which is the greatest: 0.83, 0.8, 0.062, 0.751? (a) 0.83 (b) 0.8 (c) 0.062 (d) 0.751
  19. 19.What is the value of the digit 9 in 79.532? (a) 0.9 (b) 9 (c) 0.09 (d) 90
  20. 20.2.78 + 3.4 = ? (a) 3.12 (b) 6.08 (c) 6.28 (d) 6.18
  21. 21.2.34 + 2.6 = ? (a) 5.04 (b) 4.94 (c) 4.84 (d) 2.6
  22. 22.1.04 + 1.8 = ? (a) 2.74 (b) 1.22 (c) 2.84 (d) 2.94
  23. 23.What is the value of the digit 9 in 69.472? (a) 0.9 (b) 0.09 (c) 90 (d) 9
  24. 24.What is the value of the digit 5 in 51.872? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  25. 25.Which is the greatest: 0.063, 0.183, 0.29, 0.2? (a) 0.063 (b) 0.183 (c) 0.29 (d) 0.2
  26. 26.What is the value of the digit 2 in 15.723? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  27. 27.9.81 + 8.1 = ? (a) 10.62 (b) 18.01 (c) 17.91 (d) 17.81
  28. 28.Which is the smallest: 0.085, 0.2, 0.25, 0.127? (a) 0.085 (b) 0.2 (c) 0.25 (d) 0.127
  29. 29.8.31 + 2.1 = ? (a) 10.51 (b) 8.52 (c) 10.31 (d) 10.41
  30. 30.1.32 + 2.1 = ? (a) 3.42 (b) 1.53 (c) 3.32 (d) 3.52
  31. 31.What is the value of the digit 1 in 18.296? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  32. 32.What is the value of the digit 6 in 37.196? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  33. 33.3.91 + 3.6 = ? (a) 7.51 (b) 4.27 (c) 7.41 (d) 7.61
  34. 34.What is the value of the digit 2 in 18.527? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  35. 35.8.99 + 3.5 = ? (a) 9.34 (b) 12.59 (c) 12.39 (d) 12.49
  36. 36.What is the value of the digit 3 in 23.795? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  37. 37.3.43 + 4.3 = ? (a) 7.83 (b) 7.63 (c) 7.73 (d) 3.86
  38. 38.Which is the smallest: 0.7, 0.625, 0.065, 0.79? (a) 0.7 (b) 0.625 (c) 0.065 (d) 0.79
  39. 39.7.51 + 4.1 = ? (a) 11.71 (b) 11.51 (c) 11.61 (d) 7.92
  40. 40.1.69 + 7.7 = ? (a) 2.46 (b) 9.39 (c) 9.49 (d) 9.29

Answer key

  1. 3
  2. 0.07
  3. 70
  4. 11.73
  5. 9.41
  6. 0.25
  7. 0.36
  8. 10.19
  9. 0.018
  10. 0.87
  11. 0.74
  12. 11.72
  13. 0.034
  14. 0.02
  15. 0.89
  16. 0.72
  17. 0.094
  18. 0.83
  19. 9
  20. 6.18
  21. 4.94
  22. 2.84
  23. 9
  24. 50
  25. 0.29
  26. 0.02
  27. 17.91
  28. 0.085
  29. 10.41
  30. 3.42
  31. 10
  32. 0.006
  33. 7.51
  34. 0.02
  35. 12.49
  36. 3
  37. 7.73
  38. 0.065
  39. 11.61
  40. 9.39

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