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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 356 · 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. 1.1.39 + 9.4 = ? (a) 10.69 (b) 2.33 (c) 10.89 (d) 10.79
  2. 2.What is the value of the digit 6 in 84.561? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  3. 3.What is the value of the digit 2 in 94.512? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  4. 4.Which is the greatest: 0.451, 0.56, 0.079, 0.5? (a) 0.451 (b) 0.56 (c) 0.079 (d) 0.5
  5. 5.Which is the greatest: 0.48, 0.098, 0.335, 0.4? (a) 0.48 (b) 0.098 (c) 0.335 (d) 0.4
  6. 6.4.19 + 8.7 = ? (a) 5.06 (b) 12.89 (c) 12.79 (d) 12.99
  7. 7.6.38 + 2.3 = ? (a) 8.78 (b) 6.61 (c) 8.58 (d) 8.68
  8. 8.Which is the smallest: 0.22, 0.193, 0.076, 0.2? (a) 0.22 (b) 0.193 (c) 0.076 (d) 0.2
  9. 9.Which is the smallest: 0.723, 0.85, 0.8, 0.091? (a) 0.723 (b) 0.85 (c) 0.8 (d) 0.091
  10. 10.Which is the smallest: 0.43, 0.317, 0.023, 0.4? (a) 0.43 (b) 0.317 (c) 0.023 (d) 0.4
  11. 11.Which is the greatest: 0.49, 0.367, 0.071, 0.4? (a) 0.49 (b) 0.367 (c) 0.071 (d) 0.4
  12. 12.3.63 + 5.8 = ? (a) 9.33 (b) 9.43 (c) 9.53 (d) 4.21
  13. 13.Which is the greatest: 0.6, 0.566, 0.65, 0.087? (a) 0.6 (b) 0.566 (c) 0.65 (d) 0.087
  14. 14.Which is the smallest: 0.032, 0.765, 0.8, 0.88? (a) 0.032 (b) 0.765 (c) 0.8 (d) 0.88
  15. 15.7.67 + 3.4 = ? (a) 11.07 (b) 10.97 (c) 8.01 (d) 11.17
  16. 16.What is the value of the digit 8 in 67.853? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  17. 17.Which is the smallest: 0.53, 0.426, 0.5, 0.025? (a) 0.53 (b) 0.426 (c) 0.5 (d) 0.025
  18. 18.Which is the smallest: 0.3, 0.064, 0.228, 0.36? (a) 0.3 (b) 0.064 (c) 0.228 (d) 0.36
  19. 19.Which is the smallest: 0.23, 0.115, 0.2, 0.018? (a) 0.23 (b) 0.115 (c) 0.2 (d) 0.018
  20. 20.Which is the greatest: 0.6, 0.68, 0.536, 0.044? (a) 0.6 (b) 0.68 (c) 0.536 (d) 0.044
  21. 21.Which is the smallest: 0.141, 0.031, 0.2, 0.27? (a) 0.141 (b) 0.031 (c) 0.2 (d) 0.27
  22. 22.What is the value of the digit 8 in 87.513? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  23. 23.2.83 + 8.4 = ? (a) 11.13 (b) 11.23 (c) 3.67 (d) 11.33
  24. 24.6.91 + 5.6 = ? (a) 12.61 (b) 7.47 (c) 12.41 (d) 12.51
  25. 25.5.46 + 3.5 = ? (a) 9.06 (b) 5.81 (c) 8.96 (d) 8.86
  26. 26.Which is the smallest: 0.158, 0.2, 0.26, 0.086? (a) 0.158 (b) 0.2 (c) 0.26 (d) 0.086
  27. 27.Which is the smallest: 0.22, 0.134, 0.082, 0.2? (a) 0.22 (b) 0.134 (c) 0.082 (d) 0.2
  28. 28.Which is the greatest: 0.4, 0.394, 0.023, 0.47? (a) 0.4 (b) 0.394 (c) 0.023 (d) 0.47
  29. 29.Which is the smallest: 0.76, 0.014, 0.657, 0.7? (a) 0.76 (b) 0.014 (c) 0.657 (d) 0.7
  30. 30.4.66 + 4.5 = ? (a) 9.06 (b) 9.16 (c) 5.11 (d) 9.26
  31. 31.9.93 + 5.4 = ? (a) 15.43 (b) 10.47 (c) 15.33 (d) 15.23
  32. 32.5.61 + 7.5 = ? (a) 13.21 (b) 13.11 (c) 13.01 (d) 6.36
  33. 33.2.47 + 8.6 = ? (a) 10.97 (b) 3.33 (c) 11.07 (d) 11.17
  34. 34.Which is the smallest: 0.8, 0.029, 0.744, 0.81? (a) 0.8 (b) 0.029 (c) 0.744 (d) 0.81
  35. 35.What is the value of the digit 7 in 72.951? (a) 70 (b) 7 (c) 0.07 (d) 0.7
  36. 36.Which is the smallest: 0.067, 0.79, 0.635, 0.7? (a) 0.067 (b) 0.79 (c) 0.635 (d) 0.7
  37. 37.Which is the greatest: 0.053, 0.7, 0.71, 0.629? (a) 0.053 (b) 0.7 (c) 0.71 (d) 0.629
  38. 38.Which is the greatest: 0.453, 0.53, 0.5, 0.062? (a) 0.453 (b) 0.53 (c) 0.5 (d) 0.062
  39. 39.Which is the smallest: 0.6, 0.558, 0.63, 0.031? (a) 0.6 (b) 0.558 (c) 0.63 (d) 0.031
  40. 40.8.04 + 5.9 = ? (a) 14.04 (b) 13.94 (c) 13.84 (d) 8.63

Answer key

  1. 10.79
  2. 0.06
  3. 0.002
  4. 0.56
  5. 0.48
  6. 12.89
  7. 8.68
  8. 0.076
  9. 0.091
  10. 0.023
  11. 0.49
  12. 9.43
  13. 0.65
  14. 0.032
  15. 11.07
  16. 0.8
  17. 0.025
  18. 0.064
  19. 0.018
  20. 0.68
  21. 0.031
  22. 80
  23. 11.23
  24. 12.51
  25. 8.96
  26. 0.086
  27. 0.082
  28. 0.47
  29. 0.014
  30. 9.16
  31. 15.33
  32. 13.11
  33. 11.07
  34. 0.029
  35. 70
  36. 0.067
  37. 0.71
  38. 0.53
  39. 0.031
  40. 13.94

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