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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 51 · 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. 1.5.53 + 1.8 = ? (a) 5.71 (b) 7.23 (c) 7.33 (d) 7.43
  2. 2.7.39 + 6.7 = ? (a) 8.06 (b) 14.19 (c) 14.09 (d) 13.99
  3. 3.What is the value of the digit 4 in 81.493? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  4. 4.What is the value of the digit 9 in 39.142? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  5. 5.What is the value of the digit 7 in 23.971? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  6. 6.Which is the smallest: 0.3, 0.38, 0.213, 0.077? (a) 0.3 (b) 0.38 (c) 0.213 (d) 0.077
  7. 7.Which is the smallest: 0.34, 0.292, 0.3, 0.069? (a) 0.34 (b) 0.292 (c) 0.3 (d) 0.069
  8. 8.9.31 + 4.1 = ? (a) 13.51 (b) 9.72 (c) 13.31 (d) 13.41
  9. 9.What is the value of the digit 5 in 56.283? (a) 50 (b) 0.5 (c) 5 (d) 0.05
  10. 10.Which is the greatest: 0.42, 0.4, 0.342, 0.041? (a) 0.42 (b) 0.4 (c) 0.342 (d) 0.041
  11. 11.5.91 + 5.1 = ? (a) 10.91 (b) 11.01 (c) 6.42 (d) 11.11
  12. 12.Which is the smallest: 0.449, 0.53, 0.041, 0.5? (a) 0.449 (b) 0.53 (c) 0.041 (d) 0.5
  13. 13.8.78 + 3.4 = ? (a) 12.28 (b) 12.18 (c) 9.12 (d) 12.08
  14. 14.Which is the greatest: 0.61, 0.6, 0.048, 0.511? (a) 0.61 (b) 0.6 (c) 0.048 (d) 0.511
  15. 15.What is the value of the digit 9 in 78.493? (a) 9 (b) 0.009 (c) 0.9 (d) 0.09
  16. 16.4.34 + 6.3 = ? (a) 10.64 (b) 10.74 (c) 4.97 (d) 10.54
  17. 17.What is the value of the digit 5 in 81.573? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  18. 18.What is the value of the digit 3 in 15.823? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  19. 19.Which is the greatest: 0.584, 0.078, 0.67, 0.6? (a) 0.584 (b) 0.078 (c) 0.67 (d) 0.6
  20. 20.What is the value of the digit 2 in 16.923? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  21. 21.Which is the greatest: 0.3, 0.041, 0.248, 0.34? (a) 0.3 (b) 0.041 (c) 0.248 (d) 0.34
  22. 22.7.41 + 2.3 = ? (a) 9.81 (b) 9.71 (c) 9.61 (d) 7.64
  23. 23.2.35 + 3.5 = ? (a) 2.7 (b) 5.95 (c) 5.75 (d) 5.85
  24. 24.9.55 + 7.3 = ? (a) 16.75 (b) 16.85 (c) 16.95 (d) 10.28
  25. 25.What is the value of the digit 4 in 56.482? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  26. 26.9.24 + 3.5 = ? (a) 9.59 (b) 12.84 (c) 12.74 (d) 12.64
  27. 27.Which is the smallest: 0.072, 0.27, 0.2, 0.167? (a) 0.072 (b) 0.27 (c) 0.2 (d) 0.167
  28. 28.What is the value of the digit 9 in 12.948? (a) 9 (b) 0.09 (c) 0.009 (d) 0.9
  29. 29.Which is the smallest: 0.51, 0.073, 0.5, 0.468? (a) 0.51 (b) 0.073 (c) 0.5 (d) 0.468
  30. 30.Which is the greatest: 0.3, 0.093, 0.35, 0.282? (a) 0.3 (b) 0.093 (c) 0.35 (d) 0.282
  31. 31.Which is the smallest: 0.099, 0.54, 0.483, 0.5? (a) 0.099 (b) 0.54 (c) 0.483 (d) 0.5
  32. 32.What is the value of the digit 1 in 89.461? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  33. 33.What is the value of the digit 2 in 28.173? (a) 0.02 (b) 2 (c) 20 (d) 0.2
  34. 34.Which is the smallest: 0.763, 0.85, 0.094, 0.8? (a) 0.763 (b) 0.85 (c) 0.094 (d) 0.8
  35. 35.Which is the smallest: 0.2, 0.064, 0.162, 0.26? (a) 0.2 (b) 0.064 (c) 0.162 (d) 0.26
  36. 36.What is the value of the digit 2 in 19.274? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  37. 37.Which is the greatest: 0.051, 0.65, 0.591, 0.6? (a) 0.051 (b) 0.65 (c) 0.591 (d) 0.6
  38. 38.What is the value of the digit 1 in 93.178? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  39. 39.9.41 + 5.9 = ? (a) 15.41 (b) 15.31 (c) 10 (d) 15.21
  40. 40.3.74 + 1.2 = ? (a) 3.86 (b) 5.04 (c) 4.84 (d) 4.94

Answer key

  1. 7.33
  2. 14.09
  3. 0.4
  4. 9
  5. 0.07
  6. 0.077
  7. 0.069
  8. 13.41
  9. 50
  10. 0.42
  11. 11.01
  12. 0.041
  13. 12.18
  14. 0.61
  15. 0.09
  16. 10.64
  17. 0.5
  18. 0.003
  19. 0.67
  20. 0.02
  21. 0.34
  22. 9.71
  23. 5.85
  24. 16.85
  25. 0.4
  26. 12.74
  27. 0.072
  28. 0.9
  29. 0.073
  30. 0.35
  31. 0.099
  32. 0.001
  33. 20
  34. 0.094
  35. 0.064
  36. 0.2
  37. 0.65
  38. 0.1
  39. 15.31
  40. 4.94

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