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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 994 · 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. 1.2.79 + 9.7 = ? (a) 3.76 (b) 12.49 (c) 12.39 (d) 12.59
  2. 2.2.11 + 4.4 = ? (a) 2.55 (b) 6.61 (c) 6.41 (d) 6.51
  3. 3.Which is the greatest: 0.069, 0.37, 0.233, 0.3? (a) 0.069 (b) 0.37 (c) 0.233 (d) 0.3
  4. 4.6.91 + 9.2 = ? (a) 16.01 (b) 7.83 (c) 16.11 (d) 16.21
  5. 5.8.24 + 8.3 = ? (a) 16.64 (b) 16.44 (c) 9.07 (d) 16.54
  6. 6.Which is the smallest: 0.3, 0.218, 0.33, 0.021? (a) 0.3 (b) 0.218 (c) 0.33 (d) 0.021
  7. 7.Which is the smallest: 0.014, 0.33, 0.3, 0.295? (a) 0.014 (b) 0.33 (c) 0.3 (d) 0.295
  8. 8.What is the value of the digit 4 in 19.624? (a) 0.004 (b) 4 (c) 0.4 (d) 0.04
  9. 9.9.01 + 6.3 = ? (a) 9.64 (b) 15.21 (c) 15.41 (d) 15.31
  10. 10.8.23 + 6.1 = ? (a) 14.33 (b) 8.84 (c) 14.43 (d) 14.23
  11. 11.6.23 + 7.4 = ? (a) 13.73 (b) 13.63 (c) 6.97 (d) 13.53
  12. 12.Which is the smallest: 0.86, 0.8, 0.026, 0.776? (a) 0.86 (b) 0.8 (c) 0.026 (d) 0.776
  13. 13.Which is the greatest: 0.062, 0.4, 0.332, 0.41? (a) 0.062 (b) 0.4 (c) 0.332 (d) 0.41
  14. 14.What is the value of the digit 8 in 68.159? (a) 0.8 (b) 0.08 (c) 8 (d) 80
  15. 15.2.18 + 7.7 = ? (a) 9.88 (b) 9.78 (c) 2.95 (d) 9.98
  16. 16.8.59 + 9.7 = ? (a) 18.19 (b) 9.56 (c) 18.29 (d) 18.39
  17. 17.3.59 + 3.1 = ? (a) 6.59 (b) 6.79 (c) 3.9 (d) 6.69
  18. 18.6.51 + 2.1 = ? (a) 8.71 (b) 6.72 (c) 8.51 (d) 8.61
  19. 19.5.31 + 4.2 = ? (a) 5.73 (b) 9.41 (c) 9.61 (d) 9.51
  20. 20.8.44 + 4.3 = ? (a) 12.64 (b) 12.84 (c) 8.87 (d) 12.74
  21. 21.What is the value of the digit 1 in 93.541? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  22. 22.2.84 + 6.3 = ? (a) 9.04 (b) 9.24 (c) 9.14 (d) 3.47
  23. 23.What is the value of the digit 6 in 68.253? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  24. 24.Which is the smallest: 0.64, 0.6, 0.058, 0.521? (a) 0.64 (b) 0.6 (c) 0.058 (d) 0.521
  25. 25.Which is the smallest: 0.8, 0.83, 0.768, 0.099? (a) 0.8 (b) 0.83 (c) 0.768 (d) 0.099
  26. 26.1.07 + 2.6 = ? (a) 3.57 (b) 3.67 (c) 1.33 (d) 3.77
  27. 27.Which is the smallest: 0.7, 0.78, 0.698, 0.027? (a) 0.7 (b) 0.78 (c) 0.698 (d) 0.027
  28. 28.Which is the greatest: 0.5, 0.417, 0.53, 0.061? (a) 0.5 (b) 0.417 (c) 0.53 (d) 0.061
  29. 29.Which is the smallest: 0.152, 0.2, 0.21, 0.039? (a) 0.152 (b) 0.2 (c) 0.21 (d) 0.039
  30. 30.Which is the smallest: 0.755, 0.029, 0.88, 0.8? (a) 0.755 (b) 0.029 (c) 0.88 (d) 0.8
  31. 31.What is the value of the digit 8 in 28.175? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  32. 32.2.43 + 7.3 = ? (a) 3.16 (b) 9.63 (c) 9.83 (d) 9.73
  33. 33.4.97 + 3.1 = ? (a) 7.97 (b) 8.17 (c) 8.07 (d) 5.28
  34. 34.What is the value of the digit 7 in 37.294? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  35. 35.Which is the greatest: 0.536, 0.63, 0.6, 0.097? (a) 0.536 (b) 0.63 (c) 0.6 (d) 0.097
  36. 36.Which is the smallest: 0.031, 0.3, 0.291, 0.31? (a) 0.031 (b) 0.3 (c) 0.291 (d) 0.31
  37. 37.What is the value of the digit 7 in 48.715? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  38. 38.What is the value of the digit 2 in 68.234? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  39. 39.What is the value of the digit 1 in 39.147? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  40. 40.4.07 + 4.7 = ? (a) 4.54 (b) 8.77 (c) 8.67 (d) 8.87

Answer key

  1. 12.49
  2. 6.51
  3. 0.37
  4. 16.11
  5. 16.54
  6. 0.021
  7. 0.014
  8. 0.004
  9. 15.31
  10. 14.33
  11. 13.63
  12. 0.026
  13. 0.41
  14. 8
  15. 9.88
  16. 18.29
  17. 6.69
  18. 8.61
  19. 9.51
  20. 12.74
  21. 0.001
  22. 9.14
  23. 60
  24. 0.058
  25. 0.099
  26. 3.67
  27. 0.027
  28. 0.53
  29. 0.039
  30. 0.029
  31. 8
  32. 9.73
  33. 8.07
  34. 7
  35. 0.63
  36. 0.031
  37. 0.7
  38. 0.2
  39. 0.1
  40. 8.77

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