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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 817 · 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.What is the value of the digit 3 in 25.163? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  2. 2.6.68 + 6.2 = ? (a) 12.78 (b) 12.88 (c) 7.3 (d) 12.98
  3. 3.9.75 + 4.5 = ? (a) 14.35 (b) 14.15 (c) 14.25 (d) 10.2
  4. 4.Which is the greatest: 0.33, 0.284, 0.064, 0.3? (a) 0.33 (b) 0.284 (c) 0.064 (d) 0.3
  5. 5.What is the value of the digit 7 in 26.718? (a) 0.007 (b) 7 (c) 0.7 (d) 0.07
  6. 6.What is the value of the digit 7 in 24.781? (a) 0.7 (b) 0.007 (c) 0.07 (d) 7
  7. 7.What is the value of the digit 7 in 57.892? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  8. 8.Which is the greatest: 0.34, 0.282, 0.064, 0.3? (a) 0.34 (b) 0.282 (c) 0.064 (d) 0.3
  9. 9.4.16 + 1.9 = ? (a) 5.96 (b) 6.06 (c) 4.35 (d) 6.16
  10. 10.3.61 + 6.1 = ? (a) 9.71 (b) 9.61 (c) 4.22 (d) 9.81
  11. 11.What is the value of the digit 2 in 86.231? (a) 0.002 (b) 2 (c) 0.02 (d) 0.2
  12. 12.What is the value of the digit 3 in 63.721? (a) 3 (b) 30 (c) 0.3 (d) 0.03
  13. 13.Which is the smallest: 0.7, 0.026, 0.74, 0.617? (a) 0.7 (b) 0.026 (c) 0.74 (d) 0.617
  14. 14.4.97 + 7.9 = ? (a) 12.97 (b) 12.87 (c) 5.76 (d) 12.77
  15. 15.5.23 + 2.2 = ? (a) 7.53 (b) 7.33 (c) 5.45 (d) 7.43
  16. 16.What is the value of the digit 4 in 32.417? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  17. 17.2.64 + 8.4 = ? (a) 11.14 (b) 11.04 (c) 10.94 (d) 3.48
  18. 18.7.07 + 6.1 = ? (a) 13.27 (b) 7.68 (c) 13.07 (d) 13.17
  19. 19.7.83 + 4.2 = ? (a) 12.03 (b) 12.13 (c) 8.25 (d) 11.93
  20. 20.What is the value of the digit 1 in 28.135? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  21. 21.Which is the smallest: 0.412, 0.038, 0.59, 0.5? (a) 0.412 (b) 0.038 (c) 0.59 (d) 0.5
  22. 22.What is the value of the digit 3 in 39.162? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  23. 23.What is the value of the digit 6 in 64.728? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  24. 24.What is the value of the digit 1 in 57.931? (a) 0.01 (b) 1 (c) 0.001 (d) 0.1
  25. 25.Which is the smallest: 0.4, 0.035, 0.45, 0.342? (a) 0.4 (b) 0.035 (c) 0.45 (d) 0.342
  26. 26.2.07 + 4.7 = ? (a) 2.54 (b) 6.67 (c) 6.87 (d) 6.77
  27. 27.9.85 + 5.3 = ? (a) 15.25 (b) 10.38 (c) 15.15 (d) 15.05
  28. 28.What is the value of the digit 1 in 71.258? (a) 0.1 (b) 1 (c) 0.01 (d) 10
  29. 29.Which is the greatest: 0.337, 0.4, 0.46, 0.073? (a) 0.337 (b) 0.4 (c) 0.46 (d) 0.073
  30. 30.Which is the smallest: 0.064, 0.46, 0.4, 0.377? (a) 0.064 (b) 0.46 (c) 0.4 (d) 0.377
  31. 31.7.76 + 8.3 = ? (a) 16.06 (b) 16.16 (c) 15.96 (d) 8.59
  32. 32.2.88 + 3.3 = ? (a) 6.08 (b) 6.18 (c) 3.21 (d) 6.28
  33. 33.3.46 + 1.1 = ? (a) 4.66 (b) 4.56 (c) 4.46 (d) 3.57
  34. 34.7.93 + 7.4 = ? (a) 15.33 (b) 15.23 (c) 8.67 (d) 15.43
  35. 35.What is the value of the digit 1 in 15.238? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  36. 36.What is the value of the digit 1 in 31.652? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  37. 37.8.46 + 1.8 = ? (a) 10.26 (b) 8.64 (c) 10.16 (d) 10.36
  38. 38.2.91 + 4.4 = ? (a) 3.35 (b) 7.21 (c) 7.31 (d) 7.41
  39. 39.What is the value of the digit 8 in 81.245? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  40. 40.4.81 + 5.1 = ? (a) 9.91 (b) 5.32 (c) 10.01 (d) 9.81

Answer key

  1. 0.003
  2. 12.88
  3. 14.25
  4. 0.33
  5. 0.7
  6. 0.7
  7. 7
  8. 0.34
  9. 6.06
  10. 9.71
  11. 0.2
  12. 3
  13. 0.026
  14. 12.87
  15. 7.43
  16. 0.4
  17. 11.04
  18. 13.17
  19. 12.03
  20. 0.1
  21. 0.038
  22. 30
  23. 60
  24. 0.001
  25. 0.035
  26. 6.77
  27. 15.15
  28. 1
  29. 0.46
  30. 0.064
  31. 16.06
  32. 6.18
  33. 4.56
  34. 15.33
  35. 10
  36. 1
  37. 10.26
  38. 7.31
  39. 80
  40. 9.91

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