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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 422 · 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. 1.8.22 + 9.1 = ? (a) 17.22 (b) 17.32 (c) 17.42 (d) 9.13
  2. 2.What is the value of the digit 6 in 27.645? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  3. 3.4.56 + 8.2 = ? (a) 12.76 (b) 12.66 (c) 5.38 (d) 12.86
  4. 4.Which is the smallest: 0.81, 0.081, 0.752, 0.8? (a) 0.81 (b) 0.081 (c) 0.752 (d) 0.8
  5. 5.What is the value of the digit 2 in 12.348? (a) 0.02 (b) 2 (c) 0.2 (d) 20
  6. 6.What is the value of the digit 9 in 58.291? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  7. 7.Which is the smallest: 0.47, 0.4, 0.376, 0.087? (a) 0.47 (b) 0.4 (c) 0.376 (d) 0.087
  8. 8.4.12 + 5.4 = ? (a) 9.42 (b) 9.62 (c) 9.52 (d) 4.66
  9. 9.Which is the greatest: 0.2, 0.22, 0.182, 0.028? (a) 0.2 (b) 0.22 (c) 0.182 (d) 0.028
  10. 10.What is the value of the digit 9 in 19.263? (a) 90 (b) 0.9 (c) 9 (d) 0.09
  11. 11.What is the value of the digit 8 in 13.528? (a) 8 (b) 0.8 (c) 0.008 (d) 0.08
  12. 12.2.36 + 5.1 = ? (a) 2.87 (b) 7.46 (c) 7.36 (d) 7.56
  13. 13.5.42 + 1.1 = ? (a) 6.62 (b) 5.53 (c) 6.52 (d) 6.42
  14. 14.Which is the greatest: 0.7, 0.79, 0.679, 0.045? (a) 0.7 (b) 0.79 (c) 0.679 (d) 0.045
  15. 15.1.51 + 5.3 = ? (a) 6.81 (b) 2.04 (c) 6.91 (d) 6.71
  16. 16.What is the value of the digit 8 in 97.128? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  17. 17.Which is the greatest: 0.4, 0.022, 0.42, 0.337? (a) 0.4 (b) 0.022 (c) 0.42 (d) 0.337
  18. 18.What is the value of the digit 2 in 29.716? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  19. 19.3.31 + 2.3 = ? (a) 5.51 (b) 5.71 (c) 5.61 (d) 3.54
  20. 20.What is the value of the digit 7 in 76.132? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  21. 21.What is the value of the digit 1 in 92.361? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  22. 22.4.68 + 2.8 = ? (a) 7.38 (b) 4.96 (c) 7.48 (d) 7.58
  23. 23.7.72 + 6.9 = ? (a) 14.72 (b) 14.62 (c) 14.52 (d) 8.41
  24. 24.Which is the smallest: 0.648, 0.71, 0.7, 0.028? (a) 0.648 (b) 0.71 (c) 0.7 (d) 0.028
  25. 25.1.95 + 5.5 = ? (a) 7.45 (b) 7.55 (c) 2.5 (d) 7.35
  26. 26.Which is the smallest: 0.072, 0.216, 0.33, 0.3? (a) 0.072 (b) 0.216 (c) 0.33 (d) 0.3
  27. 27.Which is the smallest: 0.214, 0.012, 0.3, 0.32? (a) 0.214 (b) 0.012 (c) 0.3 (d) 0.32
  28. 28.Which is the greatest: 0.486, 0.59, 0.045, 0.5? (a) 0.486 (b) 0.59 (c) 0.045 (d) 0.5
  29. 29.Which is the greatest: 0.024, 0.724, 0.8, 0.85? (a) 0.024 (b) 0.724 (c) 0.8 (d) 0.85
  30. 30.5.56 + 7.9 = ? (a) 13.36 (b) 13.46 (c) 6.35 (d) 13.56
  31. 31.Which is the greatest: 0.099, 0.5, 0.467, 0.54? (a) 0.099 (b) 0.5 (c) 0.467 (d) 0.54
  32. 32.What is the value of the digit 7 in 94.371? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  33. 33.8.87 + 6.1 = ? (a) 14.97 (b) 9.48 (c) 14.87 (d) 15.07
  34. 34.7.38 + 7.3 = ? (a) 14.78 (b) 14.68 (c) 8.11 (d) 14.58
  35. 35.Which is the smallest: 0.045, 0.237, 0.31, 0.3? (a) 0.045 (b) 0.237 (c) 0.31 (d) 0.3
  36. 36.Which is the smallest: 0.162, 0.22, 0.035, 0.2? (a) 0.162 (b) 0.22 (c) 0.035 (d) 0.2
  37. 37.Which is the greatest: 0.072, 0.78, 0.623, 0.7? (a) 0.072 (b) 0.78 (c) 0.623 (d) 0.7
  38. 38.Which is the smallest: 0.3, 0.238, 0.35, 0.082? (a) 0.3 (b) 0.238 (c) 0.35 (d) 0.082
  39. 39.9.05 + 2.1 = ? (a) 11.05 (b) 9.26 (c) 11.15 (d) 11.25
  40. 40.2.01 + 4.3 = ? (a) 6.41 (b) 6.21 (c) 2.44 (d) 6.31

Answer key

  1. 17.32
  2. 0.6
  3. 12.76
  4. 0.081
  5. 2
  6. 0.09
  7. 0.087
  8. 9.52
  9. 0.22
  10. 9
  11. 0.008
  12. 7.46
  13. 6.52
  14. 0.79
  15. 6.81
  16. 0.008
  17. 0.42
  18. 20
  19. 5.61
  20. 70
  21. 0.001
  22. 7.48
  23. 14.62
  24. 0.028
  25. 7.45
  26. 0.072
  27. 0.012
  28. 0.59
  29. 0.85
  30. 13.46
  31. 0.54
  32. 0.07
  33. 14.97
  34. 14.68
  35. 0.045
  36. 0.035
  37. 0.78
  38. 0.082
  39. 11.15
  40. 6.31

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