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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 830 · 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.What is the value of the digit 8 in 95.861? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  2. 2.8.18 + 2.7 = ? (a) 8.45 (b) 10.78 (c) 10.98 (d) 10.88
  3. 3.What is the value of the digit 4 in 67.429? (a) 4 (b) 0.04 (c) 0.004 (d) 0.4
  4. 4.Which is the smallest: 0.4, 0.082, 0.48, 0.396? (a) 0.4 (b) 0.082 (c) 0.48 (d) 0.396
  5. 5.8.63 + 5.7 = ? (a) 14.43 (b) 14.23 (c) 9.2 (d) 14.33
  6. 6.8.77 + 3.8 = ? (a) 9.15 (b) 12.67 (c) 12.57 (d) 12.47
  7. 7.Which is the greatest: 0.069, 0.4, 0.48, 0.334? (a) 0.069 (b) 0.4 (c) 0.48 (d) 0.334
  8. 8.9.25 + 2.1 = ? (a) 11.25 (b) 11.45 (c) 9.46 (d) 11.35
  9. 9.5.67 + 9.6 = ? (a) 15.27 (b) 6.63 (c) 15.37 (d) 15.17
  10. 10.What is the value of the digit 4 in 41.527? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  11. 11.7.61 + 8.7 = ? (a) 16.21 (b) 8.48 (c) 16.41 (d) 16.31
  12. 12.3.62 + 6.7 = ? (a) 10.42 (b) 10.22 (c) 4.29 (d) 10.32
  13. 13.What is the value of the digit 5 in 41.685? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  14. 14.What is the value of the digit 9 in 45.932? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  15. 15.6.58 + 6.2 = ? (a) 12.88 (b) 12.68 (c) 7.2 (d) 12.78
  16. 16.3.81 + 7.3 = ? (a) 11.11 (b) 11.21 (c) 11.01 (d) 4.54
  17. 17.Which is the greatest: 0.7, 0.035, 0.71, 0.622? (a) 0.7 (b) 0.035 (c) 0.71 (d) 0.622
  18. 18.What is the value of the digit 2 in 53.912? (a) 0.002 (b) 0.02 (c) 0.2 (d) 2
  19. 19.What is the value of the digit 2 in 26.789? (a) 0.2 (b) 20 (c) 2 (d) 0.02
  20. 20.What is the value of the digit 2 in 98.243? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  21. 21.What is the value of the digit 4 in 29.614? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  22. 22.What is the value of the digit 6 in 29.674? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  23. 23.What is the value of the digit 4 in 21.347? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  24. 24.Which is the smallest: 0.745, 0.82, 0.035, 0.8? (a) 0.745 (b) 0.82 (c) 0.035 (d) 0.8
  25. 25.4.11 + 3.1 = ? (a) 4.42 (b) 7.31 (c) 7.11 (d) 7.21
  26. 26.Which is the smallest: 0.43, 0.344, 0.039, 0.4? (a) 0.43 (b) 0.344 (c) 0.039 (d) 0.4
  27. 27.7.01 + 7.4 = ? (a) 14.31 (b) 7.75 (c) 14.41 (d) 14.51
  28. 28.3.38 + 8.1 = ? (a) 11.58 (b) 4.19 (c) 11.48 (d) 11.38
  29. 29.4.96 + 6.6 = ? (a) 11.66 (b) 11.56 (c) 11.46 (d) 5.62
  30. 30.Which is the smallest: 0.061, 0.69, 0.535, 0.6? (a) 0.061 (b) 0.69 (c) 0.535 (d) 0.6
  31. 31.Which is the smallest: 0.51, 0.093, 0.443, 0.5? (a) 0.51 (b) 0.093 (c) 0.443 (d) 0.5
  32. 32.2.49 + 2.2 = ? (a) 4.69 (b) 4.59 (c) 2.71 (d) 4.79
  33. 33.Which is the greatest: 0.6, 0.038, 0.588, 0.65? (a) 0.6 (b) 0.038 (c) 0.588 (d) 0.65
  34. 34.Which is the greatest: 0.056, 0.2, 0.118, 0.21? (a) 0.056 (b) 0.2 (c) 0.118 (d) 0.21
  35. 35.7.11 + 3.5 = ? (a) 10.61 (b) 10.51 (c) 10.71 (d) 7.46
  36. 36.3.49 + 2.1 = ? (a) 5.69 (b) 5.59 (c) 3.7 (d) 5.49
  37. 37.What is the value of the digit 7 in 78.639? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  38. 38.9.47 + 3.4 = ? (a) 12.97 (b) 12.87 (c) 12.77 (d) 9.81
  39. 39.Which is the greatest: 0.135, 0.2, 0.26, 0.016? (a) 0.135 (b) 0.2 (c) 0.26 (d) 0.016
  40. 40.8.51 + 7.4 = ? (a) 9.25 (b) 15.91 (c) 16.01 (d) 15.81

Answer key

  1. 0.8
  2. 10.88
  3. 0.4
  4. 0.082
  5. 14.33
  6. 12.57
  7. 0.48
  8. 11.35
  9. 15.27
  10. 40
  11. 16.31
  12. 10.32
  13. 0.005
  14. 0.9
  15. 12.78
  16. 11.11
  17. 0.71
  18. 0.002
  19. 20
  20. 0.2
  21. 0.004
  22. 0.6
  23. 0.04
  24. 0.035
  25. 7.21
  26. 0.039
  27. 14.41
  28. 11.48
  29. 11.56
  30. 0.061
  31. 0.093
  32. 4.69
  33. 0.65
  34. 0.21
  35. 10.61
  36. 5.59
  37. 70
  38. 12.87
  39. 0.26
  40. 15.91

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