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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 461 · 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. 1.3.61 + 1.3 = ? (a) 4.81 (b) 3.74 (c) 5.01 (d) 4.91
  2. 2.2.31 + 1.7 = ? (a) 4.11 (b) 4.01 (c) 3.91 (d) 2.48
  3. 3.What is the value of the digit 8 in 83.621? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  4. 4.What is the value of the digit 6 in 15.762? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  5. 5.Which is the greatest: 0.556, 0.6, 0.019, 0.61? (a) 0.556 (b) 0.6 (c) 0.019 (d) 0.61
  6. 6.Which is the greatest: 0.276, 0.091, 0.3, 0.31? (a) 0.276 (b) 0.091 (c) 0.3 (d) 0.31
  7. 7.What is the value of the digit 5 in 75.129? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  8. 8.2.07 + 5.9 = ? (a) 2.66 (b) 8.07 (c) 7.87 (d) 7.97
  9. 9.6.82 + 3.4 = ? (a) 10.22 (b) 10.32 (c) 7.16 (d) 10.12
  10. 10.Which is the smallest: 0.223, 0.077, 0.3, 0.34? (a) 0.223 (b) 0.077 (c) 0.3 (d) 0.34
  11. 11.Which is the greatest: 0.082, 0.7, 0.78, 0.652? (a) 0.082 (b) 0.7 (c) 0.78 (d) 0.652
  12. 12.What is the value of the digit 6 in 52.168? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  13. 13.8.35 + 8.1 = ? (a) 9.16 (b) 16.35 (c) 16.55 (d) 16.45
  14. 14.What is the value of the digit 2 in 39.852? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  15. 15.4.26 + 9.1 = ? (a) 5.17 (b) 13.46 (c) 13.26 (d) 13.36
  16. 16.Which is the smallest: 0.552, 0.029, 0.64, 0.6? (a) 0.552 (b) 0.029 (c) 0.64 (d) 0.6
  17. 17.What is the value of the digit 7 in 14.287? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  18. 18.What is the value of the digit 8 in 89.764? (a) 0.8 (b) 8 (c) 0.08 (d) 80
  19. 19.Which is the greatest: 0.128, 0.2, 0.088, 0.27? (a) 0.128 (b) 0.2 (c) 0.088 (d) 0.27
  20. 20.6.82 + 7.1 = ? (a) 7.53 (b) 13.92 (c) 14.02 (d) 13.82
  21. 21.1.85 + 9.2 = ? (a) 11.15 (b) 10.95 (c) 11.05 (d) 2.77
  22. 22.Which is the greatest: 0.85, 0.724, 0.8, 0.073? (a) 0.85 (b) 0.724 (c) 0.8 (d) 0.073
  23. 23.What is the value of the digit 1 in 94.615? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  24. 24.What is the value of the digit 8 in 86.435? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  25. 25.What is the value of the digit 2 in 93.256? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  26. 26.5.05 + 3.1 = ? (a) 8.15 (b) 5.36 (c) 8.25 (d) 8.05
  27. 27.Which is the smallest: 0.031, 0.6, 0.61, 0.533? (a) 0.031 (b) 0.6 (c) 0.61 (d) 0.533
  28. 28.What is the value of the digit 4 in 43.582? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  29. 29.Which is the greatest: 0.53, 0.051, 0.5, 0.449? (a) 0.53 (b) 0.051 (c) 0.5 (d) 0.449
  30. 30.Which is the greatest: 0.057, 0.5, 0.498, 0.59? (a) 0.057 (b) 0.5 (c) 0.498 (d) 0.59
  31. 31.4.49 + 2.9 = ? (a) 7.39 (b) 4.78 (c) 7.49 (d) 7.29
  32. 32.Which is the greatest: 0.378, 0.4, 0.057, 0.46? (a) 0.378 (b) 0.4 (c) 0.057 (d) 0.46
  33. 33.What is the value of the digit 3 in 82.534? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03
  34. 34.What is the value of the digit 6 in 64.973? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  35. 35.1.15 + 3.1 = ? (a) 4.25 (b) 4.15 (c) 4.35 (d) 1.46
  36. 36.What is the value of the digit 7 in 73.586? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  37. 37.What is the value of the digit 7 in 78.695? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  38. 38.2.45 + 2.2 = ? (a) 2.67 (b) 4.75 (c) 4.55 (d) 4.65
  39. 39.Which is the smallest: 0.62, 0.054, 0.6, 0.524? (a) 0.62 (b) 0.054 (c) 0.6 (d) 0.524
  40. 40.2.29 + 9.7 = ? (a) 11.99 (b) 3.26 (c) 11.89 (d) 12.09

Answer key

  1. 4.91
  2. 4.01
  3. 80
  4. 0.06
  5. 0.61
  6. 0.31
  7. 5
  8. 7.97
  9. 10.22
  10. 0.077
  11. 0.78
  12. 0.06
  13. 16.45
  14. 0.002
  15. 13.36
  16. 0.029
  17. 0.007
  18. 80
  19. 0.27
  20. 13.92
  21. 11.05
  22. 0.85
  23. 0.01
  24. 80
  25. 0.2
  26. 8.15
  27. 0.031
  28. 40
  29. 0.53
  30. 0.59
  31. 7.39
  32. 0.46
  33. 0.03
  34. 60
  35. 4.25
  36. 70
  37. 70
  38. 4.65
  39. 0.054
  40. 11.99

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