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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 530 · 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. 1.3.72 + 4.8 = ? (a) 8.62 (b) 4.2 (c) 8.52 (d) 8.42
  2. 2.6.36 + 6.6 = ? (a) 13.06 (b) 12.96 (c) 7.02 (d) 12.86
  3. 3.What is the value of the digit 7 in 69.837? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  4. 4.Which is the greatest: 0.7, 0.016, 0.624, 0.71? (a) 0.7 (b) 0.016 (c) 0.624 (d) 0.71
  5. 5.What is the value of the digit 1 in 84.312? (a) 0.1 (b) 0.001 (c) 1 (d) 0.01
  6. 6.What is the value of the digit 3 in 83.472? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  7. 7.5.59 + 2.4 = ? (a) 8.09 (b) 7.99 (c) 7.89 (d) 5.83
  8. 8.6.81 + 2.5 = ? (a) 9.21 (b) 9.41 (c) 7.06 (d) 9.31
  9. 9.7.62 + 1.3 = ? (a) 9.02 (b) 8.92 (c) 8.82 (d) 7.75
  10. 10.What is the value of the digit 1 in 31.592? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  11. 11.8.81 + 3.3 = ? (a) 12.21 (b) 9.14 (c) 12.01 (d) 12.11
  12. 12.Which is the greatest: 0.38, 0.018, 0.251, 0.3? (a) 0.38 (b) 0.018 (c) 0.251 (d) 0.3
  13. 13.What is the value of the digit 4 in 81.245? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  14. 14.9.21 + 7.9 = ? (a) 10 (b) 17.01 (c) 17.11 (d) 17.21
  15. 15.What is the value of the digit 2 in 85.172? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  16. 16.6.97 + 5.5 = ? (a) 12.57 (b) 12.37 (c) 12.47 (d) 7.52
  17. 17.9.66 + 1.9 = ? (a) 11.66 (b) 11.56 (c) 11.46 (d) 9.85
  18. 18.2.43 + 1.1 = ? (a) 3.63 (b) 3.43 (c) 2.54 (d) 3.53
  19. 19.5.05 + 9.1 = ? (a) 14.25 (b) 5.96 (c) 14.05 (d) 14.15
  20. 20.What is the value of the digit 4 in 37.941? (a) 0.04 (b) 0.004 (c) 4 (d) 0.4
  21. 21.Which is the smallest: 0.6, 0.543, 0.68, 0.092? (a) 0.6 (b) 0.543 (c) 0.68 (d) 0.092
  22. 22.Which is the smallest: 0.187, 0.2, 0.23, 0.027? (a) 0.187 (b) 0.2 (c) 0.23 (d) 0.027
  23. 23.Which is the greatest: 0.48, 0.4, 0.382, 0.022? (a) 0.48 (b) 0.4 (c) 0.382 (d) 0.022
  24. 24.What is the value of the digit 2 in 71.629? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  25. 25.9.86 + 3.5 = ? (a) 10.21 (b) 13.46 (c) 13.26 (d) 13.36
  26. 26.Which is the smallest: 0.8, 0.81, 0.799, 0.049? (a) 0.8 (b) 0.81 (c) 0.799 (d) 0.049
  27. 27.Which is the greatest: 0.77, 0.677, 0.024, 0.7? (a) 0.77 (b) 0.677 (c) 0.024 (d) 0.7
  28. 28.1.02 + 7.6 = ? (a) 1.78 (b) 8.52 (c) 8.72 (d) 8.62
  29. 29.1.43 + 3.6 = ? (a) 1.79 (b) 4.93 (c) 5.13 (d) 5.03
  30. 30.9.75 + 7.2 = ? (a) 10.47 (b) 16.85 (c) 17.05 (d) 16.95
  31. 31.3.16 + 7.1 = ? (a) 3.87 (b) 10.26 (c) 10.36 (d) 10.16
  32. 32.What is the value of the digit 2 in 97.268? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  33. 33.Which is the greatest: 0.6, 0.61, 0.512, 0.081? (a) 0.6 (b) 0.61 (c) 0.512 (d) 0.081
  34. 34.7.92 + 9.1 = ? (a) 17.02 (b) 17.12 (c) 8.83 (d) 16.92
  35. 35.1.24 + 9.6 = ? (a) 10.94 (b) 10.74 (c) 2.2 (d) 10.84
  36. 36.What is the value of the digit 7 in 89.147? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  37. 37.Which is the greatest: 0.084, 0.2, 0.24, 0.143? (a) 0.084 (b) 0.2 (c) 0.24 (d) 0.143
  38. 38.2.17 + 2.6 = ? (a) 2.43 (b) 4.77 (c) 4.67 (d) 4.87
  39. 39.What is the value of the digit 3 in 28.435? (a) 3 (b) 0.003 (c) 0.03 (d) 0.3
  40. 40.6.64 + 7.3 = ? (a) 7.37 (b) 14.04 (c) 13.94 (d) 13.84

Answer key

  1. 8.52
  2. 12.96
  3. 0.007
  4. 0.71
  5. 0.01
  6. 3
  7. 7.99
  8. 9.31
  9. 8.92
  10. 1
  11. 12.11
  12. 0.38
  13. 0.04
  14. 17.11
  15. 0.002
  16. 12.47
  17. 11.56
  18. 3.53
  19. 14.15
  20. 0.04
  21. 0.092
  22. 0.027
  23. 0.48
  24. 0.02
  25. 13.36
  26. 0.049
  27. 0.77
  28. 8.62
  29. 5.03
  30. 16.95
  31. 10.26
  32. 0.2
  33. 0.61
  34. 17.02
  35. 10.84
  36. 0.007
  37. 0.24
  38. 4.77
  39. 0.03
  40. 13.94

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