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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 809 · 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. 1.6.61 + 5.7 = ? (a) 7.18 (b) 12.31 (c) 12.21 (d) 12.41
  2. 2.Which is the greatest: 0.099, 0.389, 0.4, 0.45? (a) 0.099 (b) 0.389 (c) 0.4 (d) 0.45
  3. 3.3.57 + 8.5 = ? (a) 11.97 (b) 12.07 (c) 12.17 (d) 4.42
  4. 4.Which is the greatest: 0.796, 0.8, 0.039, 0.82? (a) 0.796 (b) 0.8 (c) 0.039 (d) 0.82
  5. 5.2.63 + 1.7 = ? (a) 4.33 (b) 2.8 (c) 4.43 (d) 4.23
  6. 6.Which is the smallest: 0.53, 0.5, 0.069, 0.474? (a) 0.53 (b) 0.5 (c) 0.069 (d) 0.474
  7. 7.Which is the smallest: 0.086, 0.595, 0.6, 0.61? (a) 0.086 (b) 0.595 (c) 0.6 (d) 0.61
  8. 8.7.83 + 3.3 = ? (a) 8.16 (b) 11.23 (c) 11.13 (d) 11.03
  9. 9.What is the value of the digit 9 in 69.487? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  10. 10.What is the value of the digit 2 in 24.781? (a) 20 (b) 0.2 (c) 0.02 (d) 2
  11. 11.What is the value of the digit 7 in 19.874? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  12. 12.Which is the greatest: 0.716, 0.83, 0.011, 0.8? (a) 0.716 (b) 0.83 (c) 0.011 (d) 0.8
  13. 13.What is the value of the digit 7 in 61.572? (a) 7 (b) 0.007 (c) 0.07 (d) 0.7
  14. 14.Which is the greatest: 0.37, 0.248, 0.3, 0.097? (a) 0.37 (b) 0.248 (c) 0.3 (d) 0.097
  15. 15.What is the value of the digit 9 in 45.192? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  16. 16.What is the value of the digit 4 in 27.143? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  17. 17.What is the value of the digit 2 in 18.932? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  18. 18.1.09 + 1.2 = ? (a) 2.29 (b) 2.39 (c) 1.21 (d) 2.19
  19. 19.Which is the greatest: 0.8, 0.062, 0.783, 0.87? (a) 0.8 (b) 0.062 (c) 0.783 (d) 0.87
  20. 20.5.91 + 6.6 = ? (a) 12.51 (b) 12.41 (c) 6.57 (d) 12.61
  21. 21.2.59 + 9.9 = ? (a) 3.58 (b) 12.39 (c) 12.59 (d) 12.49
  22. 22.Which is the smallest: 0.373, 0.46, 0.4, 0.015? (a) 0.373 (b) 0.46 (c) 0.4 (d) 0.015
  23. 23.What is the value of the digit 4 in 46.852? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  24. 24.What is the value of the digit 1 in 24.517? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  25. 25.7.71 + 2.1 = ? (a) 9.81 (b) 7.92 (c) 9.71 (d) 9.91
  26. 26.What is the value of the digit 3 in 65.382? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  27. 27.Which is the smallest: 0.067, 0.644, 0.71, 0.7? (a) 0.067 (b) 0.644 (c) 0.71 (d) 0.7
  28. 28.6.21 + 8.7 = ? (a) 14.91 (b) 15.01 (c) 14.81 (d) 7.08
  29. 29.Which is the greatest: 0.6, 0.089, 0.64, 0.525? (a) 0.6 (b) 0.089 (c) 0.64 (d) 0.525
  30. 30.Which is the greatest: 0.181, 0.2, 0.034, 0.29? (a) 0.181 (b) 0.2 (c) 0.034 (d) 0.29
  31. 31.What is the value of the digit 9 in 69.375? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  32. 32.7.69 + 7.9 = ? (a) 15.59 (b) 8.48 (c) 15.49 (d) 15.69
  33. 33.What is the value of the digit 2 in 72.569? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  34. 34.Which is the greatest: 0.68, 0.588, 0.6, 0.026? (a) 0.68 (b) 0.588 (c) 0.6 (d) 0.026
  35. 35.What is the value of the digit 5 in 35.947? (a) 50 (b) 0.05 (c) 5 (d) 0.5
  36. 36.6.06 + 8.1 = ? (a) 14.06 (b) 14.16 (c) 14.26 (d) 6.87
  37. 37.What is the value of the digit 3 in 63.971? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  38. 38.What is the value of the digit 3 in 31.765? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  39. 39.What is the value of the digit 5 in 39.517? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  40. 40.2.84 + 1.4 = ? (a) 4.14 (b) 4.24 (c) 2.98 (d) 4.34

Answer key

  1. 12.31
  2. 0.45
  3. 12.07
  4. 0.82
  5. 4.33
  6. 0.069
  7. 0.086
  8. 11.13
  9. 9
  10. 20
  11. 0.07
  12. 0.83
  13. 0.07
  14. 0.37
  15. 0.09
  16. 0.04
  17. 0.002
  18. 2.29
  19. 0.87
  20. 12.51
  21. 12.49
  22. 0.015
  23. 40
  24. 0.01
  25. 9.81
  26. 0.3
  27. 0.067
  28. 14.91
  29. 0.64
  30. 0.29
  31. 9
  32. 15.59
  33. 2
  34. 0.68
  35. 5
  36. 14.16
  37. 3
  38. 30
  39. 0.5
  40. 4.24

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