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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 965 · 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. 1.3.79 + 5.6 = ? (a) 9.49 (b) 9.39 (c) 4.35 (d) 9.29
  2. 2.Which is the greatest: 0.389, 0.068, 0.41, 0.4? (a) 0.389 (b) 0.068 (c) 0.41 (d) 0.4
  3. 3.Which is the greatest: 0.6, 0.048, 0.521, 0.67? (a) 0.6 (b) 0.048 (c) 0.521 (d) 0.67
  4. 4.What is the value of the digit 9 in 83.951? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  5. 5.3.51 + 9.1 = ? (a) 4.42 (b) 12.61 (c) 12.71 (d) 12.51
  6. 6.2.71 + 8.6 = ? (a) 11.31 (b) 3.57 (c) 11.41 (d) 11.21
  7. 7.Which is the greatest: 0.76, 0.641, 0.063, 0.7? (a) 0.76 (b) 0.641 (c) 0.063 (d) 0.7
  8. 8.4.21 + 3.5 = ? (a) 7.81 (b) 7.71 (c) 4.56 (d) 7.61
  9. 9.What is the value of the digit 2 in 62.158? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  10. 10.What is the value of the digit 5 in 34.578? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  11. 11.1.08 + 7.3 = ? (a) 8.28 (b) 8.48 (c) 8.38 (d) 1.81
  12. 12.Which is the smallest: 0.137, 0.036, 0.2, 0.28? (a) 0.137 (b) 0.036 (c) 0.2 (d) 0.28
  13. 13.What is the value of the digit 8 in 69.813? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  14. 14.4.03 + 2.5 = ? (a) 6.43 (b) 6.63 (c) 4.28 (d) 6.53
  15. 15.7.61 + 7.8 = ? (a) 15.51 (b) 8.39 (c) 15.41 (d) 15.31
  16. 16.Which is the greatest: 0.082, 0.83, 0.8, 0.713? (a) 0.082 (b) 0.83 (c) 0.8 (d) 0.713
  17. 17.8.36 + 7.6 = ? (a) 9.12 (b) 16.06 (c) 15.86 (d) 15.96
  18. 18.What is the value of the digit 7 in 12.764? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  19. 19.What is the value of the digit 3 in 85.931? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  20. 20.Which is the greatest: 0.055, 0.681, 0.7, 0.74? (a) 0.055 (b) 0.681 (c) 0.7 (d) 0.74
  21. 21.Which is the greatest: 0.24, 0.2, 0.066, 0.123? (a) 0.24 (b) 0.2 (c) 0.066 (d) 0.123
  22. 22.6.56 + 6.7 = ? (a) 13.36 (b) 7.23 (c) 13.16 (d) 13.26
  23. 23.8.23 + 5.1 = ? (a) 8.74 (b) 13.43 (c) 13.23 (d) 13.33
  24. 24.What is the value of the digit 9 in 96.235? (a) 9 (b) 0.9 (c) 0.09 (d) 90
  25. 25.6.99 + 1.9 = ? (a) 8.79 (b) 8.89 (c) 8.99 (d) 7.18
  26. 26.What is the value of the digit 8 in 85.271? (a) 80 (b) 8 (c) 0.08 (d) 0.8
  27. 27.3.01 + 9.1 = ? (a) 12.11 (b) 12.21 (c) 12.01 (d) 3.92
  28. 28.Which is the smallest: 0.591, 0.66, 0.6, 0.088? (a) 0.591 (b) 0.66 (c) 0.6 (d) 0.088
  29. 29.What is the value of the digit 3 in 17.235? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  30. 30.What is the value of the digit 4 in 49.637? (a) 0.04 (b) 4 (c) 0.4 (d) 40
  31. 31.Which is the smallest: 0.574, 0.69, 0.043, 0.6? (a) 0.574 (b) 0.69 (c) 0.043 (d) 0.6
  32. 32.4.81 + 6.7 = ? (a) 11.61 (b) 11.41 (c) 5.48 (d) 11.51
  33. 33.What is the value of the digit 3 in 74.135? (a) 3 (b) 0.003 (c) 0.03 (d) 0.3
  34. 34.8.53 + 7.6 = ? (a) 16.13 (b) 16.03 (c) 16.23 (d) 9.29
  35. 35.Which is the smallest: 0.2, 0.036, 0.25, 0.192? (a) 0.2 (b) 0.036 (c) 0.25 (d) 0.192
  36. 36.8.12 + 5.3 = ? (a) 13.32 (b) 13.42 (c) 8.65 (d) 13.52
  37. 37.Which is the greatest: 0.88, 0.796, 0.8, 0.067? (a) 0.88 (b) 0.796 (c) 0.8 (d) 0.067
  38. 38.Which is the greatest: 0.622, 0.073, 0.7, 0.78? (a) 0.622 (b) 0.073 (c) 0.7 (d) 0.78
  39. 39.What is the value of the digit 3 in 19.543? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  40. 40.7.57 + 4.4 = ? (a) 8.01 (b) 12.07 (c) 11.97 (d) 11.87

Answer key

  1. 9.39
  2. 0.41
  3. 0.67
  4. 0.9
  5. 12.61
  6. 11.31
  7. 0.76
  8. 7.71
  9. 2
  10. 0.5
  11. 8.38
  12. 0.036
  13. 0.8
  14. 6.53
  15. 15.41
  16. 0.83
  17. 15.96
  18. 0.7
  19. 0.03
  20. 0.74
  21. 0.24
  22. 13.26
  23. 13.33
  24. 90
  25. 8.89
  26. 80
  27. 12.11
  28. 0.088
  29. 0.03
  30. 40
  31. 0.043
  32. 11.51
  33. 0.03
  34. 16.13
  35. 0.036
  36. 13.42
  37. 0.88
  38. 0.78
  39. 0.003
  40. 11.97

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