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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 138 · 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. 1.7.94 + 9.7 = ? (a) 17.74 (b) 17.54 (c) 17.64 (d) 8.91
  2. 2.5.77 + 2.5 = ? (a) 8.27 (b) 8.17 (c) 8.37 (d) 6.02
  3. 3.What is the value of the digit 7 in 63.127? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  4. 4.5.91 + 4.5 = ? (a) 10.41 (b) 10.51 (c) 6.36 (d) 10.31
  5. 5.7.61 + 1.8 = ? (a) 9.51 (b) 7.79 (c) 9.31 (d) 9.41
  6. 6.Which is the greatest: 0.031, 0.87, 0.784, 0.8? (a) 0.031 (b) 0.87 (c) 0.784 (d) 0.8
  7. 7.What is the value of the digit 1 in 16.529? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  8. 8.Which is the greatest: 0.531, 0.6, 0.089, 0.61? (a) 0.531 (b) 0.6 (c) 0.089 (d) 0.61
  9. 9.Which is the smallest: 0.2, 0.043, 0.28, 0.163? (a) 0.2 (b) 0.043 (c) 0.28 (d) 0.163
  10. 10.What is the value of the digit 3 in 39.715? (a) 30 (b) 0.03 (c) 0.3 (d) 3
  11. 11.What is the value of the digit 7 in 92.874? (a) 0.7 (b) 0.07 (c) 0.007 (d) 7
  12. 12.Which is the greatest: 0.44, 0.034, 0.355, 0.4? (a) 0.44 (b) 0.034 (c) 0.355 (d) 0.4
  13. 13.What is the value of the digit 8 in 38.614? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  14. 14.What is the value of the digit 1 in 21.497? (a) 1 (b) 10 (c) 0.01 (d) 0.1
  15. 15.What is the value of the digit 8 in 83.651? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  16. 16.What is the value of the digit 8 in 46.928? (a) 8 (b) 0.008 (c) 0.08 (d) 0.8
  17. 17.1.69 + 9.4 = ? (a) 11.09 (b) 11.19 (c) 2.63 (d) 10.99
  18. 18.5.05 + 7.6 = ? (a) 12.75 (b) 5.81 (c) 12.55 (d) 12.65
  19. 19.What is the value of the digit 8 in 58.437? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  20. 20.Which is the greatest: 0.613, 0.091, 0.75, 0.7? (a) 0.613 (b) 0.091 (c) 0.75 (d) 0.7
  21. 21.8.17 + 3.1 = ? (a) 11.37 (b) 8.48 (c) 11.27 (d) 11.17
  22. 22.Which is the smallest: 0.288, 0.3, 0.34, 0.062? (a) 0.288 (b) 0.3 (c) 0.34 (d) 0.062
  23. 23.What is the value of the digit 5 in 36.951? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  24. 24.1.04 + 8.1 = ? (a) 9.14 (b) 9.04 (c) 9.24 (d) 1.85
  25. 25.1.73 + 6.3 = ? (a) 2.36 (b) 8.03 (c) 8.13 (d) 7.93
  26. 26.Which is the greatest: 0.335, 0.4, 0.43, 0.095? (a) 0.335 (b) 0.4 (c) 0.43 (d) 0.095
  27. 27.What is the value of the digit 2 in 64.321? (a) 0.02 (b) 0.2 (c) 2 (d) 0.002
  28. 28.Which is the greatest: 0.056, 0.67, 0.6, 0.577? (a) 0.056 (b) 0.67 (c) 0.6 (d) 0.577
  29. 29.7.19 + 3.6 = ? (a) 10.79 (b) 7.55 (c) 10.69 (d) 10.89
  30. 30.What is the value of the digit 4 in 14.382? (a) 4 (b) 40 (c) 0.4 (d) 0.04
  31. 31.Which is the greatest: 0.7, 0.72, 0.076, 0.685? (a) 0.7 (b) 0.72 (c) 0.076 (d) 0.685
  32. 32.8.11 + 5.3 = ? (a) 13.51 (b) 13.31 (c) 13.41 (d) 8.64
  33. 33.What is the value of the digit 2 in 71.326? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  34. 34.8.95 + 7.4 = ? (a) 9.69 (b) 16.45 (c) 16.25 (d) 16.35
  35. 35.What is the value of the digit 3 in 19.283? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  36. 36.1.19 + 7.8 = ? (a) 9.09 (b) 1.97 (c) 8.99 (d) 8.89
  37. 37.Which is the smallest: 0.711, 0.8, 0.085, 0.85? (a) 0.711 (b) 0.8 (c) 0.085 (d) 0.85
  38. 38.1.72 + 6.5 = ? (a) 8.32 (b) 8.22 (c) 8.12 (d) 2.37
  39. 39.4.31 + 5.2 = ? (a) 9.61 (b) 9.41 (c) 9.51 (d) 4.83
  40. 40.Which is the smallest: 0.321, 0.098, 0.4, 0.42? (a) 0.321 (b) 0.098 (c) 0.4 (d) 0.42

Answer key

  1. 17.64
  2. 8.27
  3. 0.007
  4. 10.41
  5. 9.41
  6. 0.87
  7. 10
  8. 0.61
  9. 0.043
  10. 30
  11. 0.07
  12. 0.44
  13. 8
  14. 1
  15. 80
  16. 0.008
  17. 11.09
  18. 12.65
  19. 8
  20. 0.75
  21. 11.27
  22. 0.062
  23. 0.05
  24. 9.14
  25. 8.03
  26. 0.43
  27. 0.02
  28. 0.67
  29. 10.79
  30. 4
  31. 0.72
  32. 13.41
  33. 0.02
  34. 16.35
  35. 0.003
  36. 8.99
  37. 0.085
  38. 8.22
  39. 9.51
  40. 0.098

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