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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 157 · 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 65.321? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  2. 2.Which is the smallest: 0.085, 0.285, 0.3, 0.31? (a) 0.085 (b) 0.285 (c) 0.3 (d) 0.31
  3. 3.What is the value of the digit 2 in 74.832? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  4. 4.6.18 + 2.8 = ? (a) 6.46 (b) 9.08 (c) 8.88 (d) 8.98
  5. 5.What is the value of the digit 8 in 84.791? (a) 8 (b) 0.8 (c) 80 (d) 0.08
  6. 6.What is the value of the digit 2 in 21.869? (a) 0.02 (b) 20 (c) 2 (d) 0.2
  7. 7.What is the value of the digit 6 in 83.146? (a) 6 (b) 0.06 (c) 0.006 (d) 0.6
  8. 8.What is the value of the digit 1 in 63.157? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  9. 9.What is the value of the digit 2 in 38.247? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  10. 10.4.81 + 9.1 = ? (a) 13.91 (b) 14.01 (c) 5.72 (d) 13.81
  11. 11.What is the value of the digit 6 in 26.514? (a) 60 (b) 6 (c) 0.06 (d) 0.6
  12. 12.Which is the smallest: 0.35, 0.081, 0.242, 0.3? (a) 0.35 (b) 0.081 (c) 0.242 (d) 0.3
  13. 13.8.16 + 3.3 = ? (a) 11.56 (b) 8.49 (c) 11.46 (d) 11.36
  14. 14.Which is the greatest: 0.047, 0.74, 0.7, 0.685? (a) 0.047 (b) 0.74 (c) 0.7 (d) 0.685
  15. 15.8.01 + 9.5 = ? (a) 17.61 (b) 17.41 (c) 17.51 (d) 8.96
  16. 16.Which is the smallest: 0.063, 0.5, 0.441, 0.57? (a) 0.063 (b) 0.5 (c) 0.441 (d) 0.57
  17. 17.Which is the greatest: 0.35, 0.3, 0.018, 0.232? (a) 0.35 (b) 0.3 (c) 0.018 (d) 0.232
  18. 18.What is the value of the digit 7 in 64.782? (a) 0.007 (b) 0.7 (c) 0.07 (d) 7
  19. 19.What is the value of the digit 5 in 61.325? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  20. 20.5.52 + 7.2 = ? (a) 6.24 (b) 12.72 (c) 12.62 (d) 12.82
  21. 21.6.36 + 3.1 = ? (a) 6.67 (b) 9.56 (c) 9.46 (d) 9.36
  22. 22.3.43 + 2.8 = ? (a) 6.23 (b) 6.33 (c) 6.13 (d) 3.71
  23. 23.Which is the smallest: 0.615, 0.71, 0.077, 0.7? (a) 0.615 (b) 0.71 (c) 0.077 (d) 0.7
  24. 24.8.86 + 1.2 = ? (a) 10.16 (b) 8.98 (c) 10.06 (d) 9.96
  25. 25.Which is the greatest: 0.063, 0.42, 0.4, 0.355? (a) 0.063 (b) 0.42 (c) 0.4 (d) 0.355
  26. 26.8.25 + 4.1 = ? (a) 12.45 (b) 12.25 (c) 8.66 (d) 12.35
  27. 27.8.03 + 9.7 = ? (a) 9 (b) 17.83 (c) 17.73 (d) 17.63
  28. 28.2.65 + 5.1 = ? (a) 7.85 (b) 3.16 (c) 7.65 (d) 7.75
  29. 29.What is the value of the digit 6 in 61.947? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  30. 30.5.04 + 4.9 = ? (a) 10.04 (b) 5.53 (c) 9.94 (d) 9.84
  31. 31.6.31 + 6.1 = ? (a) 6.92 (b) 12.41 (c) 12.51 (d) 12.31
  32. 32.What is the value of the digit 7 in 75.248? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  33. 33.7.69 + 1.8 = ? (a) 9.49 (b) 7.87 (c) 9.39 (d) 9.59
  34. 34.2.93 + 4.3 = ? (a) 7.13 (b) 3.36 (c) 7.23 (d) 7.33
  35. 35.What is the value of the digit 5 in 96.537? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05
  36. 36.What is the value of the digit 3 in 13.974? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  37. 37.What is the value of the digit 3 in 13.294? (a) 0.3 (b) 30 (c) 3 (d) 0.03
  38. 38.What is the value of the digit 7 in 12.748? (a) 0.07 (b) 0.007 (c) 7 (d) 0.7
  39. 39.2.22 + 4.2 = ? (a) 6.42 (b) 2.64 (c) 6.32 (d) 6.52
  40. 40.4.51 + 4.3 = ? (a) 8.81 (b) 4.94 (c) 8.91 (d) 8.71

Answer key

  1. 0.3
  2. 0.085
  3. 0.002
  4. 8.98
  5. 80
  6. 20
  7. 0.006
  8. 0.1
  9. 0.2
  10. 13.91
  11. 6
  12. 0.081
  13. 11.46
  14. 0.74
  15. 17.51
  16. 0.063
  17. 0.35
  18. 0.7
  19. 0.005
  20. 12.72
  21. 9.46
  22. 6.23
  23. 0.077
  24. 10.06
  25. 0.42
  26. 12.35
  27. 17.73
  28. 7.75
  29. 60
  30. 9.94
  31. 12.41
  32. 70
  33. 9.49
  34. 7.23
  35. 0.5
  36. 3
  37. 3
  38. 0.7
  39. 6.42
  40. 8.81

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