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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 170 · 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. 1.8.31 + 8.9 = ? (a) 17.11 (b) 17.31 (c) 9.2 (d) 17.21
  2. 2.3.13 + 2.1 = ? (a) 3.34 (b) 5.23 (c) 5.13 (d) 5.33
  3. 3.5.52 + 7.7 = ? (a) 13.22 (b) 13.12 (c) 6.29 (d) 13.32
  4. 4.What is the value of the digit 2 in 25.469? (a) 0.2 (b) 20 (c) 0.02 (d) 2
  5. 5.Which is the smallest: 0.36, 0.215, 0.3, 0.068? (a) 0.36 (b) 0.215 (c) 0.3 (d) 0.068
  6. 6.What is the value of the digit 1 in 41.685? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  7. 7.7.18 + 5.1 = ? (a) 7.69 (b) 12.18 (c) 12.38 (d) 12.28
  8. 8.Which is the greatest: 0.25, 0.051, 0.165, 0.2? (a) 0.25 (b) 0.051 (c) 0.165 (d) 0.2
  9. 9.What is the value of the digit 2 in 26.378? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  10. 10.7.79 + 6.7 = ? (a) 8.46 (b) 14.49 (c) 14.59 (d) 14.39
  11. 11.What is the value of the digit 3 in 62.371? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  12. 12.Which is the greatest: 0.525, 0.078, 0.63, 0.6? (a) 0.525 (b) 0.078 (c) 0.63 (d) 0.6
  13. 13.What is the value of the digit 4 in 56.874? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  14. 14.What is the value of the digit 2 in 54.627? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  15. 15.What is the value of the digit 6 in 65.741? (a) 0.06 (b) 60 (c) 0.6 (d) 6
  16. 16.What is the value of the digit 1 in 51.267? (a) 0.01 (b) 0.1 (c) 10 (d) 1
  17. 17.2.23 + 1.5 = ? (a) 3.63 (b) 3.83 (c) 3.73 (d) 2.38
  18. 18.9.43 + 7.1 = ? (a) 10.14 (b) 16.63 (c) 16.53 (d) 16.43
  19. 19.What is the value of the digit 6 in 62.389? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  20. 20.3.66 + 8.5 = ? (a) 12.06 (b) 12.16 (c) 12.26 (d) 4.51
  21. 21.Which is the greatest: 0.094, 0.7, 0.658, 0.76? (a) 0.094 (b) 0.7 (c) 0.658 (d) 0.76
  22. 22.What is the value of the digit 5 in 54.387? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  23. 23.1.82 + 6.7 = ? (a) 8.62 (b) 8.42 (c) 2.49 (d) 8.52
  24. 24.What is the value of the digit 5 in 78.594? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  25. 25.9.31 + 7.5 = ? (a) 10.06 (b) 16.91 (c) 16.71 (d) 16.81
  26. 26.What is the value of the digit 9 in 95.842? (a) 0.9 (b) 0.09 (c) 90 (d) 9
  27. 27.Which is the greatest: 0.82, 0.8, 0.761, 0.056? (a) 0.82 (b) 0.8 (c) 0.761 (d) 0.056
  28. 28.What is the value of the digit 5 in 72.135? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  29. 29.Which is the smallest: 0.021, 0.7, 0.645, 0.72? (a) 0.021 (b) 0.7 (c) 0.645 (d) 0.72
  30. 30.What is the value of the digit 5 in 58.714? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  31. 31.What is the value of the digit 2 in 72.185? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  32. 32.3.62 + 4.6 = ? (a) 4.08 (b) 8.22 (c) 8.32 (d) 8.12
  33. 33.3.48 + 4.3 = ? (a) 7.68 (b) 7.78 (c) 7.88 (d) 3.91
  34. 34.1.48 + 4.9 = ? (a) 6.48 (b) 6.28 (c) 6.38 (d) 1.97
  35. 35.What is the value of the digit 4 in 81.274? (a) 4 (b) 0.04 (c) 0.4 (d) 0.004
  36. 36.What is the value of the digit 9 in 19.465? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  37. 37.What is the value of the digit 2 in 39.276? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  38. 38.What is the value of the digit 2 in 23.174? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  39. 39.What is the value of the digit 7 in 76.184? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  40. 40.7.36 + 3.7 = ? (a) 7.73 (b) 11.16 (c) 10.96 (d) 11.06

Answer key

  1. 17.21
  2. 5.23
  3. 13.22
  4. 20
  5. 0.068
  6. 1
  7. 12.28
  8. 0.25
  9. 20
  10. 14.49
  11. 0.3
  12. 0.63
  13. 0.004
  14. 0.02
  15. 60
  16. 1
  17. 3.73
  18. 16.53
  19. 60
  20. 12.16
  21. 0.76
  22. 50
  23. 8.52
  24. 0.5
  25. 16.81
  26. 90
  27. 0.82
  28. 0.005
  29. 0.021
  30. 50
  31. 2
  32. 8.22
  33. 7.78
  34. 6.38
  35. 0.004
  36. 9
  37. 0.2
  38. 20
  39. 70
  40. 11.06

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