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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 4 · 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. 1.5.16 + 9.3 = ? (a) 6.09 (b) 14.36 (c) 14.56 (d) 14.46
  2. 2.4.13 + 3.1 = ? (a) 4.44 (b) 7.33 (c) 7.23 (d) 7.13
  3. 3.Which is the smallest: 0.553, 0.015, 0.61, 0.6? (a) 0.553 (b) 0.015 (c) 0.61 (d) 0.6
  4. 4.2.06 + 2.1 = ? (a) 2.27 (b) 4.16 (c) 4.26 (d) 4.06
  5. 5.What is the value of the digit 6 in 61.528? (a) 0.6 (b) 60 (c) 6 (d) 0.06
  6. 6.What is the value of the digit 2 in 93.425? (a) 0.002 (b) 0.02 (c) 2 (d) 0.2
  7. 7.Which is the greatest: 0.217, 0.3, 0.37, 0.098? (a) 0.217 (b) 0.3 (c) 0.37 (d) 0.098
  8. 8.What is the value of the digit 1 in 61.598? (a) 10 (b) 1 (c) 0.1 (d) 0.01
  9. 9.Which is the greatest: 0.79, 0.7, 0.616, 0.077? (a) 0.79 (b) 0.7 (c) 0.616 (d) 0.077
  10. 10.3.68 + 3.4 = ? (a) 6.98 (b) 4.02 (c) 7.08 (d) 7.18
  11. 11.Which is the smallest: 0.086, 0.3, 0.39, 0.283? (a) 0.086 (b) 0.3 (c) 0.39 (d) 0.283
  12. 12.Which is the smallest: 0.23, 0.164, 0.058, 0.2? (a) 0.23 (b) 0.164 (c) 0.058 (d) 0.2
  13. 13.What is the value of the digit 9 in 24.869? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  14. 14.What is the value of the digit 4 in 98.451? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  15. 15.Which is the greatest: 0.6, 0.022, 0.62, 0.542? (a) 0.6 (b) 0.022 (c) 0.62 (d) 0.542
  16. 16.5.74 + 1.2 = ? (a) 6.94 (b) 7.04 (c) 5.86 (d) 6.84
  17. 17.What is the value of the digit 2 in 59.824? (a) 0.02 (b) 0.002 (c) 0.2 (d) 2
  18. 18.2.63 + 2.9 = ? (a) 5.63 (b) 5.53 (c) 2.92 (d) 5.43
  19. 19.Which is the greatest: 0.041, 0.59, 0.422, 0.5? (a) 0.041 (b) 0.59 (c) 0.422 (d) 0.5
  20. 20.6.76 + 6.5 = ? (a) 7.41 (b) 13.36 (c) 13.16 (d) 13.26
  21. 21.Which is the greatest: 0.8, 0.719, 0.075, 0.83? (a) 0.8 (b) 0.719 (c) 0.075 (d) 0.83
  22. 22.Which is the greatest: 0.33, 0.211, 0.3, 0.024? (a) 0.33 (b) 0.211 (c) 0.3 (d) 0.024
  23. 23.8.94 + 4.4 = ? (a) 13.44 (b) 9.38 (c) 13.24 (d) 13.34
  24. 24.9.07 + 8.6 = ? (a) 9.93 (b) 17.77 (c) 17.67 (d) 17.57
  25. 25.7.19 + 8.1 = ? (a) 15.19 (b) 15.39 (c) 15.29 (d) 8
  26. 26.9.43 + 1.1 = ? (a) 10.53 (b) 10.63 (c) 10.43 (d) 9.54
  27. 27.Which is the smallest: 0.5, 0.039, 0.423, 0.52? (a) 0.5 (b) 0.039 (c) 0.423 (d) 0.52
  28. 28.7.09 + 2.8 = ? (a) 9.99 (b) 9.89 (c) 9.79 (d) 7.37
  29. 29.3.48 + 9.7 = ? (a) 13.08 (b) 4.45 (c) 13.28 (d) 13.18
  30. 30.8.65 + 7.7 = ? (a) 9.42 (b) 16.35 (c) 16.25 (d) 16.45
  31. 31.What is the value of the digit 1 in 13.586? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  32. 32.3.53 + 6.2 = ? (a) 9.63 (b) 9.83 (c) 4.15 (d) 9.73
  33. 33.Which is the greatest: 0.57, 0.485, 0.013, 0.5? (a) 0.57 (b) 0.485 (c) 0.013 (d) 0.5
  34. 34.What is the value of the digit 3 in 34.271? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  35. 35.What is the value of the digit 1 in 39.128? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  36. 36.Which is the smallest: 0.023, 0.632, 0.73, 0.7? (a) 0.023 (b) 0.632 (c) 0.73 (d) 0.7
  37. 37.Which is the greatest: 0.011, 0.56, 0.5, 0.416? (a) 0.011 (b) 0.56 (c) 0.5 (d) 0.416
  38. 38.1.54 + 2.5 = ? (a) 3.94 (b) 4.14 (c) 1.79 (d) 4.04
  39. 39.Which is the greatest: 0.279, 0.019, 0.3, 0.36? (a) 0.279 (b) 0.019 (c) 0.3 (d) 0.36
  40. 40.9.59 + 9.1 = ? (a) 10.5 (b) 18.79 (c) 18.59 (d) 18.69

Answer key

  1. 14.46
  2. 7.23
  3. 0.015
  4. 4.16
  5. 60
  6. 0.02
  7. 0.37
  8. 1
  9. 0.79
  10. 7.08
  11. 0.086
  12. 0.058
  13. 0.009
  14. 0.4
  15. 0.62
  16. 6.94
  17. 0.02
  18. 5.53
  19. 0.59
  20. 13.26
  21. 0.83
  22. 0.33
  23. 13.34
  24. 17.67
  25. 15.29
  26. 10.53
  27. 0.039
  28. 9.89
  29. 13.18
  30. 16.35
  31. 10
  32. 9.73
  33. 0.57
  34. 30
  35. 0.1
  36. 0.023
  37. 0.56
  38. 4.04
  39. 0.36
  40. 18.69

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