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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 81 · 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.What is the value of the digit 7 in 12.674? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  2. 2.8.55 + 4.6 = ? (a) 13.15 (b) 13.25 (c) 13.05 (d) 9.01
  3. 3.4.71 + 7.6 = ? (a) 12.31 (b) 12.41 (c) 5.47 (d) 12.21
  4. 4.1.23 + 9.8 = ? (a) 10.93 (b) 11.03 (c) 2.21 (d) 11.13
  5. 5.8.87 + 2.7 = ? (a) 11.47 (b) 11.67 (c) 11.57 (d) 9.14
  6. 6.2.11 + 5.8 = ? (a) 7.81 (b) 2.69 (c) 7.91 (d) 8.01
  7. 7.1.91 + 1.9 = ? (a) 2.1 (b) 3.71 (c) 3.91 (d) 3.81
  8. 8.Which is the smallest: 0.2, 0.123, 0.092, 0.27? (a) 0.2 (b) 0.123 (c) 0.092 (d) 0.27
  9. 9.Which is the smallest: 0.34, 0.063, 0.3, 0.225? (a) 0.34 (b) 0.063 (c) 0.3 (d) 0.225
  10. 10.What is the value of the digit 2 in 62.491? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  11. 11.6.77 + 8.3 = ? (a) 14.97 (b) 15.07 (c) 7.6 (d) 15.17
  12. 12.1.15 + 4.4 = ? (a) 5.45 (b) 5.55 (c) 1.59 (d) 5.65
  13. 13.What is the value of the digit 5 in 37.562? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  14. 14.7.72 + 7.6 = ? (a) 15.42 (b) 15.32 (c) 15.22 (d) 8.48
  15. 15.3.91 + 3.1 = ? (a) 4.22 (b) 7.11 (c) 6.91 (d) 7.01
  16. 16.What is the value of the digit 3 in 31.765? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  17. 17.8.85 + 4.7 = ? (a) 13.45 (b) 13.65 (c) 9.32 (d) 13.55
  18. 18.Which is the greatest: 0.29, 0.2, 0.026, 0.184? (a) 0.29 (b) 0.2 (c) 0.026 (d) 0.184
  19. 19.Which is the smallest: 0.479, 0.5, 0.033, 0.53? (a) 0.479 (b) 0.5 (c) 0.033 (d) 0.53
  20. 20.What is the value of the digit 2 in 93.218? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  21. 21.Which is the smallest: 0.59, 0.5, 0.485, 0.035? (a) 0.59 (b) 0.5 (c) 0.485 (d) 0.035
  22. 22.1.53 + 5.3 = ? (a) 6.83 (b) 2.06 (c) 6.73 (d) 6.93
  23. 23.4.01 + 6.7 = ? (a) 10.61 (b) 10.71 (c) 4.68 (d) 10.81
  24. 24.Which is the greatest: 0.068, 0.446, 0.58, 0.5? (a) 0.068 (b) 0.446 (c) 0.58 (d) 0.5
  25. 25.Which is the greatest: 0.644, 0.78, 0.037, 0.7? (a) 0.644 (b) 0.78 (c) 0.037 (d) 0.7
  26. 26.What is the value of the digit 9 in 38.974? (a) 0.9 (b) 0.09 (c) 0.009 (d) 9
  27. 27.What is the value of the digit 8 in 38.941? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  28. 28.1.84 + 1.7 = ? (a) 3.54 (b) 3.44 (c) 3.64 (d) 2.01
  29. 29.4.52 + 7.6 = ? (a) 12.02 (b) 5.28 (c) 12.12 (d) 12.22
  30. 30.What is the value of the digit 5 in 48.532? (a) 0.005 (b) 0.05 (c) 5 (d) 0.5
  31. 31.2.26 + 1.5 = ? (a) 3.86 (b) 3.66 (c) 3.76 (d) 2.41
  32. 32.What is the value of the digit 9 in 97.561? (a) 0.09 (b) 9 (c) 0.9 (d) 90
  33. 33.1.41 + 4.7 = ? (a) 6.01 (b) 6.21 (c) 6.11 (d) 1.88
  34. 34.What is the value of the digit 5 in 52.486? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  35. 35.Which is the greatest: 0.039, 0.776, 0.8, 0.82? (a) 0.039 (b) 0.776 (c) 0.8 (d) 0.82
  36. 36.Which is the smallest: 0.534, 0.094, 0.69, 0.6? (a) 0.534 (b) 0.094 (c) 0.69 (d) 0.6
  37. 37.6.26 + 2.5 = ? (a) 8.76 (b) 8.86 (c) 6.51 (d) 8.66
  38. 38.What is the value of the digit 3 in 34.725? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  39. 39.3.79 + 1.9 = ? (a) 5.59 (b) 3.98 (c) 5.79 (d) 5.69
  40. 40.7.59 + 3.1 = ? (a) 7.9 (b) 10.69 (c) 10.79 (d) 10.59

Answer key

  1. 0.07
  2. 13.15
  3. 12.31
  4. 11.03
  5. 11.57
  6. 7.91
  7. 3.81
  8. 0.092
  9. 0.063
  10. 2
  11. 15.07
  12. 5.55
  13. 0.5
  14. 15.32
  15. 7.01
  16. 30
  17. 13.55
  18. 0.29
  19. 0.033
  20. 0.2
  21. 0.035
  22. 6.83
  23. 10.71
  24. 0.58
  25. 0.78
  26. 0.9
  27. 8
  28. 3.54
  29. 12.12
  30. 0.5
  31. 3.76
  32. 90
  33. 6.11
  34. 50
  35. 0.82
  36. 0.094
  37. 8.76
  38. 30
  39. 5.69
  40. 10.69

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