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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 84 · 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. 1.4.69 + 7.4 = ? (a) 11.99 (b) 12.19 (c) 12.09 (d) 5.43
  2. 2.What is the value of the digit 8 in 28.963? (a) 8 (b) 0.08 (c) 0.8 (d) 80
  3. 3.4.81 + 4.9 = ? (a) 9.61 (b) 9.81 (c) 9.71 (d) 5.3
  4. 4.7.96 + 1.1 = ? (a) 9.06 (b) 9.16 (c) 8.07 (d) 8.96
  5. 5.Which is the smallest: 0.73, 0.095, 0.636, 0.7? (a) 0.73 (b) 0.095 (c) 0.636 (d) 0.7
  6. 6.Which is the smallest: 0.68, 0.531, 0.6, 0.028? (a) 0.68 (b) 0.531 (c) 0.6 (d) 0.028
  7. 7.1.99 + 2.7 = ? (a) 4.79 (b) 4.69 (c) 4.59 (d) 2.26
  8. 8.Which is the smallest: 0.748, 0.8, 0.021, 0.88? (a) 0.748 (b) 0.8 (c) 0.021 (d) 0.88
  9. 9.7.33 + 7.1 = ? (a) 14.33 (b) 14.53 (c) 8.04 (d) 14.43
  10. 10.1.91 + 1.9 = ? (a) 3.71 (b) 3.91 (c) 3.81 (d) 2.1
  11. 11.Which is the greatest: 0.47, 0.4, 0.014, 0.355? (a) 0.47 (b) 0.4 (c) 0.014 (d) 0.355
  12. 12.What is the value of the digit 3 in 98.613? (a) 0.3 (b) 0.03 (c) 0.003 (d) 3
  13. 13.Which is the greatest: 0.774, 0.8, 0.057, 0.85? (a) 0.774 (b) 0.8 (c) 0.057 (d) 0.85
  14. 14.1.71 + 4.8 = ? (a) 6.41 (b) 6.61 (c) 6.51 (d) 2.19
  15. 15.What is the value of the digit 8 in 26.834? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  16. 16.Which is the greatest: 0.8, 0.88, 0.783, 0.091? (a) 0.8 (b) 0.88 (c) 0.783 (d) 0.091
  17. 17.2.93 + 9.2 = ? (a) 12.13 (b) 12.23 (c) 3.85 (d) 12.03
  18. 18.Which is the smallest: 0.59, 0.072, 0.487, 0.5? (a) 0.59 (b) 0.072 (c) 0.487 (d) 0.5
  19. 19.4.43 + 6.4 = ? (a) 10.93 (b) 10.83 (c) 5.07 (d) 10.73
  20. 20.Which is the greatest: 0.31, 0.3, 0.295, 0.037? (a) 0.31 (b) 0.3 (c) 0.295 (d) 0.037
  21. 21.Which is the greatest: 0.52, 0.5, 0.451, 0.059? (a) 0.52 (b) 0.5 (c) 0.451 (d) 0.059
  22. 22.What is the value of the digit 6 in 71.265? (a) 6 (b) 0.006 (c) 0.6 (d) 0.06
  23. 23.8.29 + 6.9 = ? (a) 15.29 (b) 8.98 (c) 15.19 (d) 15.09
  24. 24.7.83 + 6.9 = ? (a) 14.83 (b) 14.73 (c) 14.63 (d) 8.52
  25. 25.What is the value of the digit 5 in 69.514? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  26. 26.Which is the smallest: 0.6, 0.098, 0.65, 0.525? (a) 0.6 (b) 0.098 (c) 0.65 (d) 0.525
  27. 27.6.33 + 6.5 = ? (a) 12.83 (b) 12.93 (c) 12.73 (d) 6.98
  28. 28.4.11 + 4.9 = ? (a) 4.6 (b) 9.11 (c) 8.91 (d) 9.01
  29. 29.What is the value of the digit 2 in 69.824? (a) 0.02 (b) 2 (c) 0.002 (d) 0.2
  30. 30.What is the value of the digit 8 in 61.389? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  31. 31.4.11 + 7.2 = ? (a) 4.83 (b) 11.41 (c) 11.21 (d) 11.31
  32. 32.Which is the greatest: 0.239, 0.037, 0.3, 0.39? (a) 0.239 (b) 0.037 (c) 0.3 (d) 0.39
  33. 33.Which is the smallest: 0.41, 0.347, 0.4, 0.065? (a) 0.41 (b) 0.347 (c) 0.4 (d) 0.065
  34. 34.Which is the smallest: 0.341, 0.45, 0.049, 0.4? (a) 0.341 (b) 0.45 (c) 0.049 (d) 0.4
  35. 35.Which is the greatest: 0.79, 0.664, 0.049, 0.7? (a) 0.79 (b) 0.664 (c) 0.049 (d) 0.7
  36. 36.Which is the smallest: 0.8, 0.81, 0.098, 0.741? (a) 0.8 (b) 0.81 (c) 0.098 (d) 0.741
  37. 37.5.42 + 6.7 = ? (a) 6.09 (b) 12.22 (c) 12.12 (d) 12.02
  38. 38.What is the value of the digit 6 in 79.468? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  39. 39.What is the value of the digit 8 in 43.186? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  40. 40.6.54 + 8.7 = ? (a) 15.24 (b) 15.34 (c) 15.14 (d) 7.41

Answer key

  1. 12.09
  2. 8
  3. 9.71
  4. 9.06
  5. 0.095
  6. 0.028
  7. 4.69
  8. 0.021
  9. 14.43
  10. 3.81
  11. 0.47
  12. 0.003
  13. 0.85
  14. 6.51
  15. 0.8
  16. 0.88
  17. 12.13
  18. 0.072
  19. 10.83
  20. 0.31
  21. 0.52
  22. 0.06
  23. 15.19
  24. 14.73
  25. 0.5
  26. 0.098
  27. 12.83
  28. 9.01
  29. 0.02
  30. 0.08
  31. 11.31
  32. 0.39
  33. 0.065
  34. 0.049
  35. 0.79
  36. 0.098
  37. 12.12
  38. 0.06
  39. 0.08
  40. 15.24

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