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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 875 · 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: 0.011, 0.382, 0.48, 0.4? (a) 0.011 (b) 0.382 (c) 0.48 (d) 0.4
  2. 2.3.51 + 8.7 = ? (a) 12.31 (b) 12.21 (c) 4.38 (d) 12.11
  3. 3.1.85 + 2.3 = ? (a) 4.25 (b) 4.05 (c) 2.08 (d) 4.15
  4. 4.4.81 + 6.2 = ? (a) 5.43 (b) 11.11 (c) 11.01 (d) 10.91
  5. 5.4.01 + 2.1 = ? (a) 6.21 (b) 4.22 (c) 6.11 (d) 6.01
  6. 6.Which is the smallest: 0.22, 0.2, 0.085, 0.128? (a) 0.22 (b) 0.2 (c) 0.085 (d) 0.128
  7. 7.Which is the smallest: 0.2, 0.058, 0.149, 0.26? (a) 0.2 (b) 0.058 (c) 0.149 (d) 0.26
  8. 8.What is the value of the digit 9 in 86.259? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  9. 9.Which is the greatest: 0.4, 0.026, 0.44, 0.388? (a) 0.4 (b) 0.026 (c) 0.44 (d) 0.388
  10. 10.Which is the smallest: 0.32, 0.045, 0.3, 0.283? (a) 0.32 (b) 0.045 (c) 0.3 (d) 0.283
  11. 11.5.62 + 1.7 = ? (a) 7.32 (b) 7.22 (c) 7.42 (d) 5.79
  12. 12.9.22 + 4.2 = ? (a) 13.32 (b) 13.52 (c) 9.64 (d) 13.42
  13. 13.What is the value of the digit 8 in 38.916? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  14. 14.6.31 + 4.5 = ? (a) 6.76 (b) 10.71 (c) 10.81 (d) 10.91
  15. 15.What is the value of the digit 5 in 75.126? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  16. 16.What is the value of the digit 8 in 82.397? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  17. 17.9.82 + 2.7 = ? (a) 10.09 (b) 12.62 (c) 12.52 (d) 12.42
  18. 18.Which is the greatest: 0.2, 0.111, 0.24, 0.087? (a) 0.2 (b) 0.111 (c) 0.24 (d) 0.087
  19. 19.Which is the smallest: 0.6, 0.527, 0.084, 0.62? (a) 0.6 (b) 0.527 (c) 0.084 (d) 0.62
  20. 20.Which is the smallest: 0.3, 0.232, 0.024, 0.37? (a) 0.3 (b) 0.232 (c) 0.024 (d) 0.37
  21. 21.4.68 + 9.2 = ? (a) 13.88 (b) 13.78 (c) 5.6 (d) 13.98
  22. 22.Which is the greatest: 0.53, 0.5, 0.494, 0.021? (a) 0.53 (b) 0.5 (c) 0.494 (d) 0.021
  23. 23.5.81 + 3.6 = ? (a) 9.31 (b) 6.17 (c) 9.51 (d) 9.41
  24. 24.Which is the smallest: 0.296, 0.056, 0.31, 0.3? (a) 0.296 (b) 0.056 (c) 0.31 (d) 0.3
  25. 25.6.81 + 1.9 = ? (a) 7 (b) 8.61 (c) 8.71 (d) 8.81
  26. 26.3.62 + 7.9 = ? (a) 11.52 (b) 11.62 (c) 11.42 (d) 4.41
  27. 27.Which is the greatest: 0.412, 0.5, 0.064, 0.51? (a) 0.412 (b) 0.5 (c) 0.064 (d) 0.51
  28. 28.7.31 + 2.2 = ? (a) 9.61 (b) 7.53 (c) 9.41 (d) 9.51
  29. 29.What is the value of the digit 3 in 85.973? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  30. 30.What is the value of the digit 3 in 36.275? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  31. 31.What is the value of the digit 8 in 82.514? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  32. 32.What is the value of the digit 5 in 57.213? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  33. 33.Which is the greatest: 0.053, 0.74, 0.7, 0.651? (a) 0.053 (b) 0.74 (c) 0.7 (d) 0.651
  34. 34.What is the value of the digit 2 in 47.251? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  35. 35.9.74 + 7.3 = ? (a) 17.14 (b) 17.04 (c) 16.94 (d) 10.47
  36. 36.3.58 + 6.1 = ? (a) 4.19 (b) 9.68 (c) 9.58 (d) 9.78
  37. 37.What is the value of the digit 8 in 41.827? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  38. 38.What is the value of the digit 3 in 93.651? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  39. 39.5.01 + 6.5 = ? (a) 11.61 (b) 11.41 (c) 5.66 (d) 11.51
  40. 40.3.03 + 5.1 = ? (a) 8.23 (b) 8.13 (c) 3.54 (d) 8.03

Answer key

  1. 0.011
  2. 12.21
  3. 4.15
  4. 11.01
  5. 6.11
  6. 0.085
  7. 0.058
  8. 0.009
  9. 0.44
  10. 0.045
  11. 7.32
  12. 13.42
  13. 8
  14. 10.81
  15. 5
  16. 80
  17. 12.52
  18. 0.24
  19. 0.084
  20. 0.024
  21. 13.88
  22. 0.53
  23. 9.41
  24. 0.056
  25. 8.71
  26. 11.52
  27. 0.51
  28. 9.51
  29. 0.003
  30. 30
  31. 80
  32. 50
  33. 0.74
  34. 0.2
  35. 17.04
  36. 9.68
  37. 0.8
  38. 3
  39. 11.51
  40. 8.13

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