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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 32 · 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. 1.8.31 + 3.5 = ? (a) 11.91 (b) 11.71 (c) 11.81 (d) 8.66
  2. 2.Which is the greatest: 0.79, 0.7, 0.623, 0.081? (a) 0.79 (b) 0.7 (c) 0.623 (d) 0.081
  3. 3.Which is the greatest: 0.68, 0.6, 0.076, 0.538? (a) 0.68 (b) 0.6 (c) 0.076 (d) 0.538
  4. 4.What is the value of the digit 9 in 94.652? (a) 90 (b) 9 (c) 0.09 (d) 0.9
  5. 5.Which is the smallest: 0.3, 0.011, 0.38, 0.272? (a) 0.3 (b) 0.011 (c) 0.38 (d) 0.272
  6. 6.6.05 + 7.9 = ? (a) 6.84 (b) 13.95 (c) 14.05 (d) 13.85
  7. 7.What is the value of the digit 7 in 78.913? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  8. 8.What is the value of the digit 6 in 71.635? (a) 0.006 (b) 0.06 (c) 6 (d) 0.6
  9. 9.1.13 + 1.9 = ? (a) 2.93 (b) 3.03 (c) 1.32 (d) 3.13
  10. 10.What is the value of the digit 5 in 43.759? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  11. 11.2.76 + 4.5 = ? (a) 7.26 (b) 3.21 (c) 7.36 (d) 7.16
  12. 12.What is the value of the digit 5 in 81.625? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  13. 13.3.11 + 3.3 = ? (a) 3.44 (b) 6.51 (c) 6.41 (d) 6.31
  14. 14.What is the value of the digit 9 in 85.391? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  15. 15.2.26 + 3.3 = ? (a) 2.59 (b) 5.66 (c) 5.46 (d) 5.56
  16. 16.8.68 + 5.1 = ? (a) 13.78 (b) 9.19 (c) 13.68 (d) 13.88
  17. 17.Which is the greatest: 0.7, 0.639, 0.041, 0.74? (a) 0.7 (b) 0.639 (c) 0.041 (d) 0.74
  18. 18.What is the value of the digit 3 in 51.932? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  19. 19.2.76 + 9.9 = ? (a) 12.66 (b) 12.56 (c) 12.76 (d) 3.75
  20. 20.Which is the smallest: 0.079, 0.5, 0.53, 0.434? (a) 0.079 (b) 0.5 (c) 0.53 (d) 0.434
  21. 21.8.56 + 6.5 = ? (a) 14.96 (b) 9.21 (c) 15.16 (d) 15.06
  22. 22.What is the value of the digit 8 in 48.375? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  23. 23.What is the value of the digit 2 in 35.472? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  24. 24.8.98 + 4.4 = ? (a) 9.42 (b) 13.38 (c) 13.28 (d) 13.48
  25. 25.6.61 + 5.5 = ? (a) 12.11 (b) 12.21 (c) 7.16 (d) 12.01
  26. 26.What is the value of the digit 9 in 35.291? (a) 0.9 (b) 9 (c) 0.009 (d) 0.09
  27. 27.What is the value of the digit 6 in 51.368? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  28. 28.1.54 + 6.4 = ? (a) 7.94 (b) 8.04 (c) 2.18 (d) 7.84
  29. 29.3.41 + 4.7 = ? (a) 8.21 (b) 3.88 (c) 8.01 (d) 8.11
  30. 30.What is the value of the digit 6 in 41.865? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  31. 31.Which is the smallest: 0.065, 0.61, 0.6, 0.571? (a) 0.065 (b) 0.61 (c) 0.6 (d) 0.571
  32. 32.2.02 + 3.7 = ? (a) 2.39 (b) 5.62 (c) 5.82 (d) 5.72
  33. 33.5.51 + 9.9 = ? (a) 6.5 (b) 15.51 (c) 15.31 (d) 15.41
  34. 34.9.04 + 5.9 = ? (a) 14.94 (b) 15.04 (c) 14.84 (d) 9.63
  35. 35.9.46 + 5.2 = ? (a) 14.56 (b) 9.98 (c) 14.76 (d) 14.66
  36. 36.What is the value of the digit 8 in 15.389? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  37. 37.What is the value of the digit 7 in 45.763? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  38. 38.6.21 + 4.5 = ? (a) 6.66 (b) 10.71 (c) 10.61 (d) 10.81
  39. 39.What is the value of the digit 6 in 32.685? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  40. 40.5.75 + 4.1 = ? (a) 9.75 (b) 9.95 (c) 9.85 (d) 6.16

Answer key

  1. 11.81
  2. 0.79
  3. 0.68
  4. 90
  5. 0.011
  6. 13.95
  7. 70
  8. 0.6
  9. 3.03
  10. 0.05
  11. 7.26
  12. 0.005
  13. 6.41
  14. 0.09
  15. 5.56
  16. 13.78
  17. 0.74
  18. 0.03
  19. 12.66
  20. 0.079
  21. 15.06
  22. 8
  23. 0.002
  24. 13.38
  25. 12.11
  26. 0.09
  27. 0.06
  28. 7.94
  29. 8.11
  30. 0.06
  31. 0.065
  32. 5.72
  33. 15.41
  34. 14.94
  35. 14.66
  36. 0.08
  37. 0.7
  38. 10.71
  39. 0.6
  40. 9.85

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