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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 913 · 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.Which is the greatest: 0.019, 0.8, 0.88, 0.719? (a) 0.019 (b) 0.8 (c) 0.88 (d) 0.719
  2. 2.Which is the greatest: 0.78, 0.7, 0.691, 0.076? (a) 0.78 (b) 0.7 (c) 0.691 (d) 0.076
  3. 3.6.53 + 1.3 = ? (a) 6.66 (b) 7.93 (c) 7.73 (d) 7.83
  4. 4.Which is the smallest: 0.732, 0.81, 0.8, 0.072? (a) 0.732 (b) 0.81 (c) 0.8 (d) 0.072
  5. 5.Which is the greatest: 0.255, 0.39, 0.071, 0.3? (a) 0.255 (b) 0.39 (c) 0.071 (d) 0.3
  6. 6.7.61 + 4.2 = ? (a) 11.71 (b) 11.91 (c) 8.03 (d) 11.81
  7. 7.Which is the smallest: 0.723, 0.017, 0.84, 0.8? (a) 0.723 (b) 0.017 (c) 0.84 (d) 0.8
  8. 8.2.84 + 9.8 = ? (a) 12.54 (b) 3.82 (c) 12.74 (d) 12.64
  9. 9.Which is the smallest: 0.069, 0.3, 0.233, 0.37? (a) 0.069 (b) 0.3 (c) 0.233 (d) 0.37
  10. 10.What is the value of the digit 5 in 34.157? (a) 0.005 (b) 0.5 (c) 5 (d) 0.05
  11. 11.What is the value of the digit 6 in 84.362? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  12. 12.2.71 + 7.5 = ? (a) 10.11 (b) 3.46 (c) 10.21 (d) 10.31
  13. 13.What is the value of the digit 1 in 19.257? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  14. 14.Which is the smallest: 0.061, 0.75, 0.7, 0.683? (a) 0.061 (b) 0.75 (c) 0.7 (d) 0.683
  15. 15.What is the value of the digit 6 in 97.621? (a) 0.6 (b) 0.006 (c) 0.06 (d) 6
  16. 16.Which is the greatest: 0.23, 0.2, 0.027, 0.141? (a) 0.23 (b) 0.2 (c) 0.027 (d) 0.141
  17. 17.8.31 + 2.3 = ? (a) 8.54 (b) 10.51 (c) 10.61 (d) 10.71
  18. 18.What is the value of the digit 5 in 62.859? (a) 0.5 (b) 0.05 (c) 0.005 (d) 5
  19. 19.9.14 + 4.4 = ? (a) 9.58 (b) 13.44 (c) 13.64 (d) 13.54
  20. 20.2.64 + 8.6 = ? (a) 11.24 (b) 3.5 (c) 11.14 (d) 11.34
  21. 21.6.32 + 4.9 = ? (a) 11.12 (b) 11.22 (c) 11.32 (d) 6.81
  22. 22.What is the value of the digit 5 in 75.194? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  23. 23.What is the value of the digit 2 in 61.924? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  24. 24.6.04 + 7.7 = ? (a) 6.81 (b) 13.64 (c) 13.84 (d) 13.74
  25. 25.1.57 + 7.9 = ? (a) 9.57 (b) 9.37 (c) 9.47 (d) 2.36
  26. 26.Which is the greatest: 0.4, 0.362, 0.048, 0.43? (a) 0.4 (b) 0.362 (c) 0.048 (d) 0.43
  27. 27.What is the value of the digit 6 in 91.246? (a) 0.06 (b) 0.6 (c) 6 (d) 0.006
  28. 28.Which is the smallest: 0.057, 0.437, 0.51, 0.5? (a) 0.057 (b) 0.437 (c) 0.51 (d) 0.5
  29. 29.Which is the greatest: 0.31, 0.291, 0.089, 0.3? (a) 0.31 (b) 0.291 (c) 0.089 (d) 0.3
  30. 30.2.21 + 6.5 = ? (a) 8.81 (b) 8.61 (c) 2.86 (d) 8.71
  31. 31.What is the value of the digit 4 in 12.485? (a) 0.004 (b) 0.4 (c) 4 (d) 0.04
  32. 32.2.99 + 5.1 = ? (a) 8.19 (b) 7.99 (c) 8.09 (d) 3.5
  33. 33.9.41 + 7.3 = ? (a) 16.71 (b) 16.61 (c) 16.81 (d) 10.14
  34. 34.1.07 + 8.4 = ? (a) 9.37 (b) 9.57 (c) 9.47 (d) 1.91
  35. 35.6.05 + 3.6 = ? (a) 9.65 (b) 9.75 (c) 6.41 (d) 9.55
  36. 36.Which is the greatest: 0.592, 0.66, 0.6, 0.037? (a) 0.592 (b) 0.66 (c) 0.6 (d) 0.037
  37. 37.3.38 + 7.3 = ? (a) 4.11 (b) 10.68 (c) 10.58 (d) 10.78
  38. 38.5.87 + 6.8 = ? (a) 12.67 (b) 6.55 (c) 12.57 (d) 12.77
  39. 39.What is the value of the digit 1 in 58.341? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  40. 40.4.06 + 2.7 = ? (a) 6.66 (b) 6.86 (c) 6.76 (d) 4.33

Answer key

  1. 0.88
  2. 0.78
  3. 7.83
  4. 0.072
  5. 0.39
  6. 11.81
  7. 0.017
  8. 12.64
  9. 0.069
  10. 0.05
  11. 0.06
  12. 10.21
  13. 10
  14. 0.061
  15. 0.6
  16. 0.23
  17. 10.61
  18. 0.05
  19. 13.54
  20. 11.24
  21. 11.22
  22. 5
  23. 0.02
  24. 13.74
  25. 9.47
  26. 0.43
  27. 0.006
  28. 0.057
  29. 0.31
  30. 8.71
  31. 0.4
  32. 8.09
  33. 16.71
  34. 9.47
  35. 9.65
  36. 0.66
  37. 10.68
  38. 12.67
  39. 0.001
  40. 6.76

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