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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 847 · 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. 1.1.23 + 5.5 = ? (a) 1.78 (b) 6.83 (c) 6.63 (d) 6.73
  2. 2.5.06 + 4.3 = ? (a) 5.49 (b) 9.36 (c) 9.26 (d) 9.46
  3. 3.Which is the greatest: 0.656, 0.71, 0.078, 0.7? (a) 0.656 (b) 0.71 (c) 0.078 (d) 0.7
  4. 4.What is the value of the digit 2 in 37.925? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  5. 5.7.51 + 2.7 = ? (a) 7.78 (b) 10.11 (c) 10.31 (d) 10.21
  6. 6.1.77 + 8.1 = ? (a) 9.87 (b) 9.77 (c) 2.58 (d) 9.97
  7. 7.What is the value of the digit 6 in 16.378? (a) 0.6 (b) 60 (c) 0.06 (d) 6
  8. 8.Which is the greatest: 0.29, 0.061, 0.2, 0.191? (a) 0.29 (b) 0.061 (c) 0.2 (d) 0.191
  9. 9.4.98 + 6.1 = ? (a) 11.08 (b) 11.18 (c) 5.59 (d) 10.98
  10. 10.What is the value of the digit 8 in 82.679? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  11. 11.What is the value of the digit 3 in 52.396? (a) 0.03 (b) 0.003 (c) 3 (d) 0.3
  12. 12.Which is the greatest: 0.461, 0.52, 0.5, 0.068? (a) 0.461 (b) 0.52 (c) 0.5 (d) 0.068
  13. 13.What is the value of the digit 4 in 47.263? (a) 0.4 (b) 40 (c) 4 (d) 0.04
  14. 14.7.52 + 6.9 = ? (a) 14.32 (b) 14.52 (c) 8.21 (d) 14.42
  15. 15.4.72 + 6.4 = ? (a) 11.02 (b) 11.12 (c) 5.36 (d) 11.22
  16. 16.1.31 + 8.4 = ? (a) 9.81 (b) 9.71 (c) 9.61 (d) 2.15
  17. 17.1.26 + 4.1 = ? (a) 1.67 (b) 5.26 (c) 5.46 (d) 5.36
  18. 18.5.68 + 7.1 = ? (a) 6.39 (b) 12.68 (c) 12.88 (d) 12.78
  19. 19.What is the value of the digit 2 in 16.823? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  20. 20.Which is the greatest: 0.126, 0.074, 0.22, 0.2? (a) 0.126 (b) 0.074 (c) 0.22 (d) 0.2
  21. 21.7.11 + 1.9 = ? (a) 8.91 (b) 9.11 (c) 7.3 (d) 9.01
  22. 22.3.19 + 2.9 = ? (a) 6.19 (b) 6.09 (c) 5.99 (d) 3.48
  23. 23.What is the value of the digit 2 in 43.712? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  24. 24.Which is the smallest: 0.5, 0.046, 0.52, 0.463? (a) 0.5 (b) 0.046 (c) 0.52 (d) 0.463
  25. 25.9.92 + 3.2 = ? (a) 13.02 (b) 13.12 (c) 10.24 (d) 13.22
  26. 26.Which is the smallest: 0.72, 0.7, 0.678, 0.013? (a) 0.72 (b) 0.7 (c) 0.678 (d) 0.013
  27. 27.9.42 + 7.1 = ? (a) 16.42 (b) 16.62 (c) 16.52 (d) 10.13
  28. 28.9.66 + 8.4 = ? (a) 18.16 (b) 10.5 (c) 17.96 (d) 18.06
  29. 29.What is the value of the digit 1 in 72.164? (a) 0.1 (b) 1 (c) 0.01 (d) 0.001
  30. 30.1.89 + 7.1 = ? (a) 9.09 (b) 8.99 (c) 2.6 (d) 8.89
  31. 31.Which is the smallest: 0.693, 0.72, 0.7, 0.069? (a) 0.693 (b) 0.72 (c) 0.7 (d) 0.069
  32. 32.5.81 + 8.6 = ? (a) 14.31 (b) 14.51 (c) 6.67 (d) 14.41
  33. 33.2.66 + 6.1 = ? (a) 8.76 (b) 3.27 (c) 8.66 (d) 8.86
  34. 34.What is the value of the digit 1 in 13.897? (a) 10 (b) 0.01 (c) 1 (d) 0.1
  35. 35.3.26 + 6.5 = ? (a) 3.91 (b) 9.76 (c) 9.66 (d) 9.86
  36. 36.2.71 + 1.8 = ? (a) 4.61 (b) 4.51 (c) 4.41 (d) 2.89
  37. 37.What is the value of the digit 6 in 61.973? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  38. 38.4.91 + 2.6 = ? (a) 7.41 (b) 5.17 (c) 7.51 (d) 7.61
  39. 39.Which is the greatest: 0.782, 0.056, 0.82, 0.8? (a) 0.782 (b) 0.056 (c) 0.82 (d) 0.8
  40. 40.1.41 + 1.4 = ? (a) 2.91 (b) 1.55 (c) 2.71 (d) 2.81

Answer key

  1. 6.73
  2. 9.36
  3. 0.71
  4. 0.02
  5. 10.21
  6. 9.87
  7. 6
  8. 0.29
  9. 11.08
  10. 80
  11. 0.3
  12. 0.52
  13. 40
  14. 14.42
  15. 11.12
  16. 9.71
  17. 5.36
  18. 12.78
  19. 0.02
  20. 0.22
  21. 9.01
  22. 6.09
  23. 0.002
  24. 0.046
  25. 13.12
  26. 0.013
  27. 16.52
  28. 18.06
  29. 0.1
  30. 8.99
  31. 0.069
  32. 14.41
  33. 8.76
  34. 10
  35. 9.76
  36. 4.51
  37. 60
  38. 7.51
  39. 0.82
  40. 2.81

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