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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 909 · 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: 0.667, 0.7, 0.77, 0.083? (a) 0.667 (b) 0.7 (c) 0.77 (d) 0.083
  2. 2.7.17 + 7.2 = ? (a) 7.89 (b) 14.37 (c) 14.27 (d) 14.47
  3. 3.What is the value of the digit 9 in 39.478? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  4. 4.Which is the greatest: 0.686, 0.061, 0.76, 0.7? (a) 0.686 (b) 0.061 (c) 0.76 (d) 0.7
  5. 5.Which is the smallest: 0.6, 0.019, 0.63, 0.594? (a) 0.6 (b) 0.019 (c) 0.63 (d) 0.594
  6. 6.Which is the smallest: 0.2, 0.178, 0.081, 0.28? (a) 0.2 (b) 0.178 (c) 0.081 (d) 0.28
  7. 7.What is the value of the digit 8 in 83.917? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  8. 8.What is the value of the digit 3 in 79.423? (a) 0.3 (b) 0.03 (c) 3 (d) 0.003
  9. 9.6.35 + 2.1 = ? (a) 6.56 (b) 8.45 (c) 8.35 (d) 8.55
  10. 10.What is the value of the digit 6 in 39.674? (a) 6 (b) 0.6 (c) 0.06 (d) 0.006
  11. 11.1.13 + 1.6 = ? (a) 2.63 (b) 2.83 (c) 1.29 (d) 2.73
  12. 12.Which is the greatest: 0.7, 0.638, 0.71, 0.098? (a) 0.7 (b) 0.638 (c) 0.71 (d) 0.098
  13. 13.8.62 + 7.1 = ? (a) 9.33 (b) 15.82 (c) 15.72 (d) 15.62
  14. 14.What is the value of the digit 5 in 24.658? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  15. 15.Which is the smallest: 0.061, 0.59, 0.496, 0.5? (a) 0.061 (b) 0.59 (c) 0.496 (d) 0.5
  16. 16.9.64 + 6.9 = ? (a) 16.64 (b) 16.54 (c) 16.44 (d) 10.33
  17. 17.3.94 + 3.1 = ? (a) 4.25 (b) 7.14 (c) 6.94 (d) 7.04
  18. 18.2.04 + 4.7 = ? (a) 6.84 (b) 2.51 (c) 6.64 (d) 6.74
  19. 19.7.31 + 5.6 = ? (a) 12.81 (b) 13.01 (c) 12.91 (d) 7.87
  20. 20.5.29 + 7.9 = ? (a) 13.09 (b) 6.08 (c) 13.19 (d) 13.29
  21. 21.1.67 + 8.7 = ? (a) 10.47 (b) 2.54 (c) 10.37 (d) 10.27
  22. 22.Which is the greatest: 0.299, 0.34, 0.3, 0.075? (a) 0.299 (b) 0.34 (c) 0.3 (d) 0.075
  23. 23.Which is the smallest: 0.022, 0.516, 0.63, 0.6? (a) 0.022 (b) 0.516 (c) 0.63 (d) 0.6
  24. 24.Which is the greatest: 0.232, 0.059, 0.37, 0.3? (a) 0.232 (b) 0.059 (c) 0.37 (d) 0.3
  25. 25.Which is the smallest: 0.62, 0.078, 0.6, 0.574? (a) 0.62 (b) 0.078 (c) 0.6 (d) 0.574
  26. 26.What is the value of the digit 4 in 34.729? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  27. 27.Which is the smallest: 0.6, 0.053, 0.67, 0.556? (a) 0.6 (b) 0.053 (c) 0.67 (d) 0.556
  28. 28.What is the value of the digit 4 in 47.618? (a) 40 (b) 4 (c) 0.4 (d) 0.04
  29. 29.1.83 + 5.2 = ? (a) 6.93 (b) 7.03 (c) 7.13 (d) 2.35
  30. 30.What is the value of the digit 5 in 15.498? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  31. 31.What is the value of the digit 2 in 38.712? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  32. 32.Which is the greatest: 0.3, 0.223, 0.38, 0.047? (a) 0.3 (b) 0.223 (c) 0.38 (d) 0.047
  33. 33.What is the value of the digit 4 in 64.723? (a) 40 (b) 0.04 (c) 0.4 (d) 4
  34. 34.1.18 + 6.7 = ? (a) 7.88 (b) 7.98 (c) 1.85 (d) 7.78
  35. 35.2.84 + 2.2 = ? (a) 4.94 (b) 5.14 (c) 5.04 (d) 3.06
  36. 36.5.12 + 3.6 = ? (a) 5.48 (b) 8.62 (c) 8.72 (d) 8.82
  37. 37.5.01 + 2.8 = ? (a) 7.91 (b) 5.29 (c) 7.81 (d) 7.71
  38. 38.What is the value of the digit 4 in 39.147? (a) 0.4 (b) 4 (c) 0.004 (d) 0.04
  39. 39.7.08 + 2.2 = ? (a) 9.28 (b) 9.18 (c) 7.3 (d) 9.38
  40. 40.What is the value of the digit 2 in 27.394? (a) 0.2 (b) 2 (c) 0.02 (d) 20

Answer key

  1. 0.77
  2. 14.37
  3. 9
  4. 0.76
  5. 0.019
  6. 0.081
  7. 80
  8. 0.003
  9. 8.45
  10. 0.6
  11. 2.73
  12. 0.71
  13. 15.72
  14. 0.05
  15. 0.061
  16. 16.54
  17. 7.04
  18. 6.74
  19. 12.91
  20. 13.19
  21. 10.37
  22. 0.34
  23. 0.022
  24. 0.37
  25. 0.078
  26. 4
  27. 0.053
  28. 40
  29. 7.03
  30. 5
  31. 0.002
  32. 0.38
  33. 4
  34. 7.88
  35. 5.04
  36. 8.72
  37. 7.81
  38. 0.04
  39. 9.28
  40. 20

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