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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 490 · 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 2 in 23.186? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  2. 2.Which is the smallest: 0.48, 0.081, 0.4, 0.357? (a) 0.48 (b) 0.081 (c) 0.4 (d) 0.357
  3. 3.What is the value of the digit 6 in 31.965? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  4. 4.Which is the greatest: 0.765, 0.8, 0.82, 0.047? (a) 0.765 (b) 0.8 (c) 0.82 (d) 0.047
  5. 5.3.76 + 1.4 = ? (a) 5.16 (b) 5.06 (c) 3.9 (d) 5.26
  6. 6.Which is the greatest: 0.028, 0.2, 0.22, 0.132? (a) 0.028 (b) 0.2 (c) 0.22 (d) 0.132
  7. 7.What is the value of the digit 3 in 36.721? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  8. 8.Which is the greatest: 0.42, 0.4, 0.367, 0.033? (a) 0.42 (b) 0.4 (c) 0.367 (d) 0.033
  9. 9.3.39 + 8.8 = ? (a) 4.27 (b) 12.29 (c) 12.09 (d) 12.19
  10. 10.Which is the smallest: 0.035, 0.87, 0.782, 0.8? (a) 0.035 (b) 0.87 (c) 0.782 (d) 0.8
  11. 11.1.64 + 9.1 = ? (a) 10.74 (b) 10.64 (c) 2.55 (d) 10.84
  12. 12.9.93 + 9.4 = ? (a) 19.23 (b) 10.87 (c) 19.43 (d) 19.33
  13. 13.2.41 + 2.8 = ? (a) 5.21 (b) 5.11 (c) 5.31 (d) 2.69
  14. 14.Which is the greatest: 0.099, 0.2, 0.155, 0.21? (a) 0.099 (b) 0.2 (c) 0.155 (d) 0.21
  15. 15.Which is the greatest: 0.762, 0.85, 0.028, 0.8? (a) 0.762 (b) 0.85 (c) 0.028 (d) 0.8
  16. 16.Which is the smallest: 0.063, 0.73, 0.675, 0.7? (a) 0.063 (b) 0.73 (c) 0.675 (d) 0.7
  17. 17.What is the value of the digit 7 in 75.289? (a) 0.07 (b) 7 (c) 0.7 (d) 70
  18. 18.Which is the smallest: 0.224, 0.3, 0.025, 0.32? (a) 0.224 (b) 0.3 (c) 0.025 (d) 0.32
  19. 19.What is the value of the digit 8 in 86.213? (a) 0.08 (b) 80 (c) 8 (d) 0.8
  20. 20.What is the value of the digit 5 in 51.289? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  21. 21.7.48 + 7.7 = ? (a) 8.25 (b) 15.28 (c) 15.18 (d) 15.08
  22. 22.8.06 + 2.1 = ? (a) 10.26 (b) 10.06 (c) 10.16 (d) 8.27
  23. 23.What is the value of the digit 7 in 72.419? (a) 70 (b) 0.07 (c) 7 (d) 0.7
  24. 24.5.18 + 3.8 = ? (a) 9.08 (b) 8.98 (c) 5.56 (d) 8.88
  25. 25.Which is the greatest: 0.014, 0.8, 0.85, 0.732? (a) 0.014 (b) 0.8 (c) 0.85 (d) 0.732
  26. 26.Which is the greatest: 0.028, 0.6, 0.511, 0.64? (a) 0.028 (b) 0.6 (c) 0.511 (d) 0.64
  27. 27.What is the value of the digit 3 in 51.763? (a) 3 (b) 0.03 (c) 0.3 (d) 0.003
  28. 28.1.39 + 6.9 = ? (a) 8.19 (b) 2.08 (c) 8.29 (d) 8.39
  29. 29.1.09 + 4.5 = ? (a) 5.69 (b) 5.49 (c) 1.54 (d) 5.59
  30. 30.Which is the greatest: 0.325, 0.086, 0.49, 0.4? (a) 0.325 (b) 0.086 (c) 0.49 (d) 0.4
  31. 31.1.36 + 1.7 = ? (a) 2.96 (b) 3.16 (c) 1.53 (d) 3.06
  32. 32.6.73 + 5.1 = ? (a) 7.24 (b) 11.73 (c) 11.93 (d) 11.83
  33. 33.What is the value of the digit 9 in 84.619? (a) 0.009 (b) 9 (c) 0.09 (d) 0.9
  34. 34.What is the value of the digit 5 in 56.324? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  35. 35.5.32 + 9.9 = ? (a) 15.32 (b) 15.12 (c) 15.22 (d) 6.31
  36. 36.2.58 + 1.6 = ? (a) 4.18 (b) 4.08 (c) 2.74 (d) 4.28
  37. 37.5.45 + 6.6 = ? (a) 6.11 (b) 12.05 (c) 11.95 (d) 12.15
  38. 38.7.26 + 9.1 = ? (a) 8.17 (b) 16.36 (c) 16.26 (d) 16.46
  39. 39.Which is the smallest: 0.279, 0.092, 0.3, 0.31? (a) 0.279 (b) 0.092 (c) 0.3 (d) 0.31
  40. 40.2.07 + 8.2 = ? (a) 2.89 (b) 10.17 (c) 10.27 (d) 10.37

Answer key

  1. 20
  2. 0.081
  3. 0.06
  4. 0.82
  5. 5.16
  6. 0.22
  7. 30
  8. 0.42
  9. 12.19
  10. 0.035
  11. 10.74
  12. 19.33
  13. 5.21
  14. 0.21
  15. 0.85
  16. 0.063
  17. 70
  18. 0.025
  19. 80
  20. 50
  21. 15.18
  22. 10.16
  23. 70
  24. 8.98
  25. 0.85
  26. 0.64
  27. 0.003
  28. 8.29
  29. 5.59
  30. 0.49
  31. 3.06
  32. 11.83
  33. 0.009
  34. 50
  35. 15.22
  36. 4.18
  37. 12.05
  38. 16.36
  39. 0.092
  40. 10.27

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