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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 203 · 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. 1.2.85 + 1.9 = ? (a) 3.04 (b) 4.65 (c) 4.85 (d) 4.75
  2. 2.What is the value of the digit 8 in 83.614? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  3. 3.Which is the greatest: 0.627, 0.7, 0.034, 0.72? (a) 0.627 (b) 0.7 (c) 0.034 (d) 0.72
  4. 4.Which is the greatest: 0.43, 0.092, 0.4, 0.386? (a) 0.43 (b) 0.092 (c) 0.4 (d) 0.386
  5. 5.3.91 + 2.2 = ? (a) 6.11 (b) 4.13 (c) 6.21 (d) 6.01
  6. 6.What is the value of the digit 2 in 46.238? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  7. 7.Which is the greatest: 0.176, 0.033, 0.2, 0.22? (a) 0.176 (b) 0.033 (c) 0.2 (d) 0.22
  8. 8.Which is the smallest: 0.89, 0.8, 0.081, 0.771? (a) 0.89 (b) 0.8 (c) 0.081 (d) 0.771
  9. 9.What is the value of the digit 2 in 21.845? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  10. 10.Which is the smallest: 0.581, 0.67, 0.044, 0.6? (a) 0.581 (b) 0.67 (c) 0.044 (d) 0.6
  11. 11.Which is the smallest: 0.84, 0.019, 0.718, 0.8? (a) 0.84 (b) 0.019 (c) 0.718 (d) 0.8
  12. 12.6.34 + 1.4 = ? (a) 6.48 (b) 7.84 (c) 7.74 (d) 7.64
  13. 13.What is the value of the digit 6 in 49.682? (a) 0.006 (b) 0.06 (c) 6 (d) 0.6
  14. 14.What is the value of the digit 5 in 75.986? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  15. 15.4.18 + 2.7 = ? (a) 6.78 (b) 4.45 (c) 6.88 (d) 6.98
  16. 16.Which is the smallest: 0.244, 0.3, 0.39, 0.053? (a) 0.244 (b) 0.3 (c) 0.39 (d) 0.053
  17. 17.5.88 + 5.4 = ? (a) 11.28 (b) 6.42 (c) 11.18 (d) 11.38
  18. 18.2.33 + 2.6 = ? (a) 5.03 (b) 4.83 (c) 2.59 (d) 4.93
  19. 19.What is the value of the digit 5 in 82.195? (a) 0.5 (b) 0.005 (c) 0.05 (d) 5
  20. 20.What is the value of the digit 7 in 39.475? (a) 0.007 (b) 0.07 (c) 0.7 (d) 7
  21. 21.What is the value of the digit 3 in 83.196? (a) 0.03 (b) 3 (c) 0.3 (d) 30
  22. 22.4.91 + 8.2 = ? (a) 13.11 (b) 13.21 (c) 5.73 (d) 13.01
  23. 23.What is the value of the digit 5 in 69.815? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  24. 24.3.15 + 5.1 = ? (a) 8.15 (b) 3.66 (c) 8.35 (d) 8.25
  25. 25.6.36 + 2.7 = ? (a) 8.96 (b) 9.16 (c) 6.63 (d) 9.06
  26. 26.What is the value of the digit 7 in 48.271? (a) 0.007 (b) 0.7 (c) 7 (d) 0.07
  27. 27.What is the value of the digit 3 in 36.581? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  28. 28.What is the value of the digit 1 in 81.962? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  29. 29.Which is the greatest: 0.85, 0.719, 0.094, 0.8? (a) 0.85 (b) 0.719 (c) 0.094 (d) 0.8
  30. 30.2.78 + 3.3 = ? (a) 6.08 (b) 5.98 (c) 3.11 (d) 6.18
  31. 31.Which is the greatest: 0.362, 0.48, 0.4, 0.053? (a) 0.362 (b) 0.48 (c) 0.4 (d) 0.053
  32. 32.8.62 + 8.9 = ? (a) 17.62 (b) 17.52 (c) 17.42 (d) 9.51
  33. 33.5.81 + 7.5 = ? (a) 6.56 (b) 13.31 (c) 13.41 (d) 13.21
  34. 34.Which is the greatest: 0.139, 0.27, 0.068, 0.2? (a) 0.139 (b) 0.27 (c) 0.068 (d) 0.2
  35. 35.2.06 + 1.3 = ? (a) 3.36 (b) 3.46 (c) 3.26 (d) 2.19
  36. 36.What is the value of the digit 7 in 81.764? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  37. 37.Which is the smallest: 0.26, 0.074, 0.2, 0.161? (a) 0.26 (b) 0.074 (c) 0.2 (d) 0.161
  38. 38.1.94 + 7.5 = ? (a) 2.69 (b) 9.54 (c) 9.34 (d) 9.44
  39. 39.What is the value of the digit 9 in 18.692? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  40. 40.3.01 + 4.7 = ? (a) 7.81 (b) 7.71 (c) 7.61 (d) 3.48

Answer key

  1. 4.75
  2. 80
  3. 0.72
  4. 0.43
  5. 6.11
  6. 0.2
  7. 0.22
  8. 0.081
  9. 20
  10. 0.044
  11. 0.019
  12. 7.74
  13. 0.6
  14. 5
  15. 6.88
  16. 0.053
  17. 11.28
  18. 4.93
  19. 0.005
  20. 0.07
  21. 3
  22. 13.11
  23. 0.005
  24. 8.25
  25. 9.06
  26. 0.07
  27. 30
  28. 1
  29. 0.85
  30. 6.08
  31. 0.48
  32. 17.52
  33. 13.31
  34. 0.27
  35. 3.36
  36. 0.7
  37. 0.074
  38. 9.44
  39. 0.09
  40. 7.71

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