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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 29 · 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. 1.1.18 + 7.1 = ? (a) 1.89 (b) 8.28 (c) 8.38 (d) 8.18
  2. 2.What is the value of the digit 3 in 16.283? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  3. 3.2.11 + 7.4 = ? (a) 2.85 (b) 9.51 (c) 9.41 (d) 9.61
  4. 4.Which is the greatest: 0.163, 0.26, 0.066, 0.2? (a) 0.163 (b) 0.26 (c) 0.066 (d) 0.2
  5. 5.4.55 + 1.9 = ? (a) 6.35 (b) 6.55 (c) 6.45 (d) 4.74
  6. 6.Which is the smallest: 0.355, 0.021, 0.46, 0.4? (a) 0.355 (b) 0.021 (c) 0.46 (d) 0.4
  7. 7.Which is the smallest: 0.451, 0.069, 0.55, 0.5? (a) 0.451 (b) 0.069 (c) 0.55 (d) 0.5
  8. 8.1.24 + 8.6 = ? (a) 2.1 (b) 9.84 (c) 9.74 (d) 9.94
  9. 9.Which is the smallest: 0.033, 0.153, 0.2, 0.22? (a) 0.033 (b) 0.153 (c) 0.2 (d) 0.22
  10. 10.1.91 + 4.4 = ? (a) 2.35 (b) 6.21 (c) 6.41 (d) 6.31
  11. 11.Which is the smallest: 0.611, 0.7, 0.095, 0.75? (a) 0.611 (b) 0.7 (c) 0.095 (d) 0.75
  12. 12.7.77 + 7.1 = ? (a) 8.48 (b) 14.77 (c) 14.97 (d) 14.87
  13. 13.4.12 + 7.1 = ? (a) 11.32 (b) 4.83 (c) 11.12 (d) 11.22
  14. 14.4.85 + 6.7 = ? (a) 11.65 (b) 11.45 (c) 11.55 (d) 5.52
  15. 15.What is the value of the digit 6 in 38.296? (a) 0.6 (b) 0.06 (c) 0.006 (d) 6
  16. 16.What is the value of the digit 2 in 63.128? (a) 0.02 (b) 2 (c) 0.2 (d) 0.002
  17. 17.What is the value of the digit 4 in 35.482? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  18. 18.Which is the smallest: 0.57, 0.5, 0.061, 0.415? (a) 0.57 (b) 0.5 (c) 0.061 (d) 0.415
  19. 19.Which is the smallest: 0.032, 0.62, 0.6, 0.569? (a) 0.032 (b) 0.62 (c) 0.6 (d) 0.569
  20. 20.Which is the smallest: 0.517, 0.097, 0.6, 0.64? (a) 0.517 (b) 0.097 (c) 0.6 (d) 0.64
  21. 21.What is the value of the digit 2 in 31.592? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  22. 22.7.46 + 1.1 = ? (a) 7.57 (b) 8.56 (c) 8.46 (d) 8.66
  23. 23.6.32 + 6.9 = ? (a) 13.32 (b) 13.12 (c) 7.01 (d) 13.22
  24. 24.3.91 + 4.6 = ? (a) 8.61 (b) 4.37 (c) 8.41 (d) 8.51
  25. 25.2.37 + 7.6 = ? (a) 10.07 (b) 9.87 (c) 3.13 (d) 9.97
  26. 26.What is the value of the digit 8 in 23.814? (a) 0.8 (b) 8 (c) 0.008 (d) 0.08
  27. 27.What is the value of the digit 6 in 18.562? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  28. 28.What is the value of the digit 7 in 74.358? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  29. 29.What is the value of the digit 3 in 62.473? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  30. 30.4.19 + 5.5 = ? (a) 4.74 (b) 9.79 (c) 9.59 (d) 9.69
  31. 31.5.68 + 2.7 = ? (a) 8.48 (b) 8.28 (c) 5.95 (d) 8.38
  32. 32.5.36 + 8.1 = ? (a) 13.56 (b) 13.46 (c) 13.36 (d) 6.17
  33. 33.What is the value of the digit 5 in 93.625? (a) 0.5 (b) 0.05 (c) 5 (d) 0.005
  34. 34.Which is the smallest: 0.089, 0.252, 0.32, 0.3? (a) 0.089 (b) 0.252 (c) 0.32 (d) 0.3
  35. 35.What is the value of the digit 1 in 15.329? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  36. 36.1.82 + 5.6 = ? (a) 2.38 (b) 7.52 (c) 7.32 (d) 7.42
  37. 37.Which is the greatest: 0.3, 0.097, 0.271, 0.32? (a) 0.3 (b) 0.097 (c) 0.271 (d) 0.32
  38. 38.Which is the smallest: 0.376, 0.4, 0.024, 0.49? (a) 0.376 (b) 0.4 (c) 0.024 (d) 0.49
  39. 39.Which is the greatest: 0.34, 0.086, 0.3, 0.227? (a) 0.34 (b) 0.086 (c) 0.3 (d) 0.227
  40. 40.What is the value of the digit 3 in 35.649? (a) 0.3 (b) 30 (c) 0.03 (d) 3

Answer key

  1. 8.28
  2. 0.003
  3. 9.51
  4. 0.26
  5. 6.45
  6. 0.021
  7. 0.069
  8. 9.84
  9. 0.033
  10. 6.31
  11. 0.095
  12. 14.87
  13. 11.22
  14. 11.55
  15. 0.006
  16. 0.02
  17. 0.4
  18. 0.061
  19. 0.032
  20. 0.097
  21. 0.002
  22. 8.56
  23. 13.22
  24. 8.51
  25. 9.97
  26. 0.8
  27. 0.06
  28. 70
  29. 0.003
  30. 9.69
  31. 8.38
  32. 13.46
  33. 0.005
  34. 0.089
  35. 10
  36. 7.42
  37. 0.32
  38. 0.024
  39. 0.34
  40. 30

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