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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 848 · 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. 1.8.26 + 6.1 = ? (a) 14.46 (b) 14.26 (c) 14.36 (d) 8.87
  2. 2.9.51 + 5.3 = ? (a) 10.04 (b) 14.81 (c) 14.71 (d) 14.91
  3. 3.7.09 + 5.8 = ? (a) 7.67 (b) 12.89 (c) 12.79 (d) 12.99
  4. 4.3.11 + 4.9 = ? (a) 8.01 (b) 7.91 (c) 3.6 (d) 8.11
  5. 5.What is the value of the digit 7 in 17.236? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  6. 6.5.24 + 5.1 = ? (a) 10.44 (b) 5.75 (c) 10.24 (d) 10.34
  7. 7.8.81 + 6.2 = ? (a) 15.01 (b) 9.43 (c) 14.91 (d) 15.11
  8. 8.5.58 + 8.1 = ? (a) 13.68 (b) 13.58 (c) 13.78 (d) 6.39
  9. 9.What is the value of the digit 5 in 56.837? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  10. 10.Which is the greatest: 0.014, 0.7, 0.673, 0.78? (a) 0.014 (b) 0.7 (c) 0.673 (d) 0.78
  11. 11.What is the value of the digit 2 in 12.469? (a) 2 (b) 20 (c) 0.02 (d) 0.2
  12. 12.5.71 + 8.4 = ? (a) 14.11 (b) 14.01 (c) 14.21 (d) 6.55
  13. 13.8.29 + 9.3 = ? (a) 17.69 (b) 17.49 (c) 17.59 (d) 9.22
  14. 14.What is the value of the digit 7 in 79.361? (a) 0.7 (b) 70 (c) 7 (d) 0.07
  15. 15.What is the value of the digit 4 in 24.368? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  16. 16.6.06 + 2.6 = ? (a) 8.76 (b) 8.56 (c) 8.66 (d) 6.32
  17. 17.Which is the smallest: 0.65, 0.586, 0.6, 0.068? (a) 0.65 (b) 0.586 (c) 0.6 (d) 0.068
  18. 18.Which is the smallest: 0.078, 0.279, 0.33, 0.3? (a) 0.078 (b) 0.279 (c) 0.33 (d) 0.3
  19. 19.1.93 + 1.1 = ? (a) 3.03 (b) 2.93 (c) 3.13 (d) 2.04
  20. 20.1.12 + 2.9 = ? (a) 3.92 (b) 4.12 (c) 4.02 (d) 1.41
  21. 21.What is the value of the digit 1 in 12.789? (a) 1 (b) 10 (c) 0.1 (d) 0.01
  22. 22.6.31 + 3.8 = ? (a) 6.69 (b) 10.21 (c) 10.11 (d) 10.01
  23. 23.9.01 + 9.7 = ? (a) 18.81 (b) 9.98 (c) 18.71 (d) 18.61
  24. 24.What is the value of the digit 6 in 15.762? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  25. 25.What is the value of the digit 8 in 86.274? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  26. 26.Which is the smallest: 0.42, 0.039, 0.389, 0.4? (a) 0.42 (b) 0.039 (c) 0.389 (d) 0.4
  27. 27.What is the value of the digit 1 in 81.574? (a) 1 (b) 0.1 (c) 10 (d) 0.01
  28. 28.What is the value of the digit 1 in 26.714? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  29. 29.8.66 + 5.9 = ? (a) 14.46 (b) 14.66 (c) 14.56 (d) 9.25
  30. 30.Which is the greatest: 0.43, 0.026, 0.341, 0.4? (a) 0.43 (b) 0.026 (c) 0.341 (d) 0.4
  31. 31.What is the value of the digit 5 in 85.741? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  32. 32.What is the value of the digit 9 in 58.921? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  33. 33.Which is the greatest: 0.38, 0.023, 0.3, 0.239? (a) 0.38 (b) 0.023 (c) 0.3 (d) 0.239
  34. 34.Which is the greatest: 0.022, 0.7, 0.73, 0.635? (a) 0.022 (b) 0.7 (c) 0.73 (d) 0.635
  35. 35.4.96 + 6.6 = ? (a) 11.66 (b) 5.62 (c) 11.46 (d) 11.56
  36. 36.What is the value of the digit 4 in 52.471? (a) 4 (b) 0.004 (c) 0.04 (d) 0.4
  37. 37.1.41 + 6.9 = ? (a) 8.41 (b) 2.1 (c) 8.31 (d) 8.21
  38. 38.2.26 + 7.5 = ? (a) 9.76 (b) 9.86 (c) 3.01 (d) 9.66
  39. 39.3.81 + 2.4 = ? (a) 6.31 (b) 4.05 (c) 6.21 (d) 6.11
  40. 40.What is the value of the digit 9 in 52.893? (a) 0.9 (b) 0.009 (c) 0.09 (d) 9

Answer key

  1. 14.36
  2. 14.81
  3. 12.89
  4. 8.01
  5. 7
  6. 10.34
  7. 15.01
  8. 13.68
  9. 50
  10. 0.78
  11. 2
  12. 14.11
  13. 17.59
  14. 70
  15. 4
  16. 8.66
  17. 0.068
  18. 0.078
  19. 3.03
  20. 4.02
  21. 10
  22. 10.11
  23. 18.71
  24. 0.06
  25. 80
  26. 0.039
  27. 1
  28. 0.01
  29. 14.56
  30. 0.43
  31. 5
  32. 0.9
  33. 0.38
  34. 0.73
  35. 11.56
  36. 0.4
  37. 8.31
  38. 9.76
  39. 6.21
  40. 0.09

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