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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 290 · 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.Which is the greatest: 0.53, 0.5, 0.032, 0.428? (a) 0.53 (b) 0.5 (c) 0.032 (d) 0.428
  2. 2.3.81 + 7.5 = ? (a) 11.21 (b) 11.41 (c) 11.31 (d) 4.56
  3. 3.What is the value of the digit 5 in 17.945? (a) 0.05 (b) 0.5 (c) 0.005 (d) 5
  4. 4.1.71 + 5.7 = ? (a) 2.28 (b) 7.51 (c) 7.41 (d) 7.31
  5. 5.2.74 + 6.9 = ? (a) 3.43 (b) 9.54 (c) 9.74 (d) 9.64
  6. 6.6.38 + 3.7 = ? (a) 6.75 (b) 10.08 (c) 10.18 (d) 9.98
  7. 7.3.66 + 3.2 = ? (a) 3.98 (b) 6.76 (c) 6.86 (d) 6.96
  8. 8.What is the value of the digit 1 in 19.276? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  9. 9.What is the value of the digit 9 in 56.329? (a) 0.009 (b) 0.09 (c) 9 (d) 0.9
  10. 10.What is the value of the digit 1 in 25.139? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  11. 11.7.81 + 7.1 = ? (a) 8.52 (b) 14.91 (c) 15.01 (d) 14.81
  12. 12.2.76 + 2.8 = ? (a) 3.04 (b) 5.56 (c) 5.66 (d) 5.46
  13. 13.6.39 + 9.3 = ? (a) 15.79 (b) 15.59 (c) 7.32 (d) 15.69
  14. 14.What is the value of the digit 7 in 24.137? (a) 0.7 (b) 7 (c) 0.007 (d) 0.07
  15. 15.Which is the smallest: 0.65, 0.522, 0.6, 0.047? (a) 0.65 (b) 0.522 (c) 0.6 (d) 0.047
  16. 16.Which is the greatest: 0.2, 0.29, 0.151, 0.099? (a) 0.2 (b) 0.29 (c) 0.151 (d) 0.099
  17. 17.What is the value of the digit 8 in 85.267? (a) 80 (b) 0.08 (c) 8 (d) 0.8
  18. 18.Which is the smallest: 0.427, 0.021, 0.54, 0.5? (a) 0.427 (b) 0.021 (c) 0.54 (d) 0.5
  19. 19.9.68 + 1.3 = ? (a) 10.98 (b) 11.08 (c) 10.88 (d) 9.81
  20. 20.8.48 + 9.5 = ? (a) 17.88 (b) 9.43 (c) 18.08 (d) 17.98
  21. 21.6.38 + 7.1 = ? (a) 13.58 (b) 13.48 (c) 13.38 (d) 7.09
  22. 22.5.01 + 7.1 = ? (a) 12.01 (b) 12.11 (c) 12.21 (d) 5.72
  23. 23.2.02 + 3.5 = ? (a) 5.62 (b) 5.52 (c) 5.42 (d) 2.37
  24. 24.5.63 + 3.7 = ? (a) 9.33 (b) 9.43 (c) 6 (d) 9.23
  25. 25.What is the value of the digit 6 in 96.413? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  26. 26.What is the value of the digit 7 in 27.514? (a) 70 (b) 0.7 (c) 0.07 (d) 7
  27. 27.8.19 + 8.1 = ? (a) 16.29 (b) 16.39 (c) 16.19 (d) 9
  28. 28.9.24 + 5.9 = ? (a) 15.14 (b) 15.04 (c) 15.24 (d) 9.83
  29. 29.What is the value of the digit 8 in 92.387? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  30. 30.8.41 + 9.5 = ? (a) 17.81 (b) 18.01 (c) 9.36 (d) 17.91
  31. 31.Which is the greatest: 0.247, 0.39, 0.012, 0.3? (a) 0.247 (b) 0.39 (c) 0.012 (d) 0.3
  32. 32.5.06 + 1.3 = ? (a) 6.26 (b) 6.46 (c) 6.36 (d) 5.19
  33. 33.Which is the smallest: 0.461, 0.56, 0.093, 0.5? (a) 0.461 (b) 0.56 (c) 0.093 (d) 0.5
  34. 34.Which is the greatest: 0.053, 0.4, 0.49, 0.385? (a) 0.053 (b) 0.4 (c) 0.49 (d) 0.385
  35. 35.Which is the greatest: 0.059, 0.3, 0.273, 0.36? (a) 0.059 (b) 0.3 (c) 0.273 (d) 0.36
  36. 36.Which is the greatest: 0.85, 0.757, 0.028, 0.8? (a) 0.85 (b) 0.757 (c) 0.028 (d) 0.8
  37. 37.9.05 + 9.1 = ? (a) 18.15 (b) 18.25 (c) 18.05 (d) 9.96
  38. 38.What is the value of the digit 5 in 59.126? (a) 0.05 (b) 5 (c) 50 (d) 0.5
  39. 39.What is the value of the digit 5 in 83.956? (a) 5 (b) 0.005 (c) 0.05 (d) 0.5
  40. 40.9.88 + 9.9 = ? (a) 19.88 (b) 19.78 (c) 10.87 (d) 19.68

Answer key

  1. 0.53
  2. 11.31
  3. 0.005
  4. 7.41
  5. 9.64
  6. 10.08
  7. 6.86
  8. 10
  9. 0.009
  10. 0.1
  11. 14.91
  12. 5.56
  13. 15.69
  14. 0.007
  15. 0.047
  16. 0.29
  17. 80
  18. 0.021
  19. 10.98
  20. 17.98
  21. 13.48
  22. 12.11
  23. 5.52
  24. 9.33
  25. 6
  26. 7
  27. 16.29
  28. 15.14
  29. 0.08
  30. 17.91
  31. 0.39
  32. 6.36
  33. 0.093
  34. 0.49
  35. 0.36
  36. 0.85
  37. 18.15
  38. 50
  39. 0.05
  40. 19.78

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