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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 796 · 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 4 in 27.431? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  2. 2.6.37 + 6.2 = ? (a) 12.67 (b) 12.57 (c) 6.99 (d) 12.47
  3. 3.8.08 + 7.8 = ? (a) 8.86 (b) 15.88 (c) 15.98 (d) 15.78
  4. 4.1.09 + 4.3 = ? (a) 1.52 (b) 5.39 (c) 5.29 (d) 5.49
  5. 5.Which is the greatest: 0.147, 0.2, 0.035, 0.28? (a) 0.147 (b) 0.2 (c) 0.035 (d) 0.28
  6. 6.4.14 + 3.1 = ? (a) 7.34 (b) 7.14 (c) 7.24 (d) 4.45
  7. 7.Which is the smallest: 0.61, 0.034, 0.541, 0.6? (a) 0.61 (b) 0.034 (c) 0.541 (d) 0.6
  8. 8.3.65 + 9.7 = ? (a) 13.25 (b) 13.45 (c) 13.35 (d) 4.62
  9. 9.5.58 + 2.7 = ? (a) 8.38 (b) 8.18 (c) 5.85 (d) 8.28
  10. 10.5.91 + 1.2 = ? (a) 7.01 (b) 6.03 (c) 7.21 (d) 7.11
  11. 11.What is the value of the digit 1 in 26.791? (a) 0.01 (b) 1 (c) 0.1 (d) 0.001
  12. 12.1.44 + 3.4 = ? (a) 4.94 (b) 1.78 (c) 4.74 (d) 4.84
  13. 13.7.21 + 9.1 = ? (a) 16.41 (b) 16.31 (c) 8.12 (d) 16.21
  14. 14.What is the value of the digit 3 in 37.415? (a) 0.3 (b) 30 (c) 0.03 (d) 3
  15. 15.Which is the smallest: 0.065, 0.58, 0.5, 0.483? (a) 0.065 (b) 0.58 (c) 0.5 (d) 0.483
  16. 16.Which is the smallest: 0.3, 0.275, 0.037, 0.35? (a) 0.3 (b) 0.275 (c) 0.037 (d) 0.35
  17. 17.1.84 + 5.3 = ? (a) 7.04 (b) 7.24 (c) 7.14 (d) 2.37
  18. 18.What is the value of the digit 2 in 24.687? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  19. 19.What is the value of the digit 9 in 59.621? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  20. 20.7.66 + 5.8 = ? (a) 13.56 (b) 13.46 (c) 13.36 (d) 8.24
  21. 21.4.37 + 3.2 = ? (a) 7.57 (b) 4.69 (c) 7.47 (d) 7.67
  22. 22.Which is the greatest: 0.6, 0.031, 0.596, 0.66? (a) 0.6 (b) 0.031 (c) 0.596 (d) 0.66
  23. 23.Which is the smallest: 0.286, 0.31, 0.3, 0.031? (a) 0.286 (b) 0.31 (c) 0.3 (d) 0.031
  24. 24.Which is the smallest: 0.052, 0.247, 0.39, 0.3? (a) 0.052 (b) 0.247 (c) 0.39 (d) 0.3
  25. 25.3.52 + 6.1 = ? (a) 9.52 (b) 9.62 (c) 9.72 (d) 4.13
  26. 26.6.37 + 3.2 = ? (a) 9.67 (b) 9.47 (c) 6.69 (d) 9.57
  27. 27.Which is the smallest: 0.56, 0.5, 0.453, 0.063? (a) 0.56 (b) 0.5 (c) 0.453 (d) 0.063
  28. 28.8.81 + 2.2 = ? (a) 11.11 (b) 10.91 (c) 11.01 (d) 9.03
  29. 29.7.25 + 8.4 = ? (a) 15.55 (b) 15.75 (c) 15.65 (d) 8.09
  30. 30.4.47 + 5.7 = ? (a) 10.27 (b) 5.04 (c) 10.07 (d) 10.17
  31. 31.What is the value of the digit 5 in 51.624? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  32. 32.8.51 + 5.2 = ? (a) 13.81 (b) 13.61 (c) 9.03 (d) 13.71
  33. 33.5.98 + 1.6 = ? (a) 7.68 (b) 6.14 (c) 7.58 (d) 7.48
  34. 34.6.97 + 5.1 = ? (a) 11.97 (b) 12.07 (c) 12.17 (d) 7.48
  35. 35.8.07 + 7.1 = ? (a) 8.78 (b) 15.07 (c) 15.27 (d) 15.17
  36. 36.What is the value of the digit 2 in 26.134? (a) 0.02 (b) 0.2 (c) 2 (d) 20
  37. 37.Which is the greatest: 0.023, 0.165, 0.2, 0.26? (a) 0.023 (b) 0.165 (c) 0.2 (d) 0.26
  38. 38.1.41 + 4.9 = ? (a) 1.9 (b) 6.41 (c) 6.31 (d) 6.21
  39. 39.2.14 + 1.8 = ? (a) 4.04 (b) 3.94 (c) 3.84 (d) 2.32
  40. 40.What is the value of the digit 5 in 63.185? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005

Answer key

  1. 0.4
  2. 12.57
  3. 15.88
  4. 5.39
  5. 0.28
  6. 7.24
  7. 0.034
  8. 13.35
  9. 8.28
  10. 7.11
  11. 0.001
  12. 4.84
  13. 16.31
  14. 30
  15. 0.065
  16. 0.037
  17. 7.14
  18. 20
  19. 9
  20. 13.46
  21. 7.57
  22. 0.66
  23. 0.031
  24. 0.052
  25. 9.62
  26. 9.57
  27. 0.063
  28. 11.01
  29. 15.65
  30. 10.17
  31. 50
  32. 13.71
  33. 7.58
  34. 12.07
  35. 15.17
  36. 20
  37. 0.26
  38. 6.31
  39. 3.94
  40. 0.005

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