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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 225 · 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. 1.1.43 + 6.9 = ? (a) 8.33 (b) 8.23 (c) 2.12 (d) 8.43
  2. 2.Which is the greatest: 0.32, 0.3, 0.294, 0.031? (a) 0.32 (b) 0.3 (c) 0.294 (d) 0.031
  3. 3.2.53 + 5.4 = ? (a) 7.83 (b) 3.07 (c) 7.93 (d) 8.03
  4. 4.Which is the smallest: 0.712, 0.81, 0.8, 0.049? (a) 0.712 (b) 0.81 (c) 0.8 (d) 0.049
  5. 5.Which is the greatest: 0.64, 0.513, 0.6, 0.076? (a) 0.64 (b) 0.513 (c) 0.6 (d) 0.076
  6. 6.What is the value of the digit 3 in 39.421? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  7. 7.1.23 + 8.4 = ? (a) 9.63 (b) 9.73 (c) 2.07 (d) 9.53
  8. 8.6.38 + 2.1 = ? (a) 6.59 (b) 8.38 (c) 8.48 (d) 8.58
  9. 9.9.65 + 7.7 = ? (a) 17.35 (b) 17.25 (c) 17.45 (d) 10.42
  10. 10.7.66 + 4.7 = ? (a) 8.13 (b) 12.26 (c) 12.36 (d) 12.46
  11. 11.7.03 + 2.4 = ? (a) 9.43 (b) 9.53 (c) 9.33 (d) 7.27
  12. 12.What is the value of the digit 6 in 28.463? (a) 0.06 (b) 0.006 (c) 6 (d) 0.6
  13. 13.7.71 + 2.8 = ? (a) 10.61 (b) 10.41 (c) 10.51 (d) 7.99
  14. 14.Which is the smallest: 0.69, 0.6, 0.036, 0.563? (a) 0.69 (b) 0.6 (c) 0.036 (d) 0.563
  15. 15.8.89 + 2.3 = ? (a) 11.29 (b) 11.09 (c) 9.12 (d) 11.19
  16. 16.Which is the greatest: 0.021, 0.49, 0.4, 0.361? (a) 0.021 (b) 0.49 (c) 0.4 (d) 0.361
  17. 17.Which is the greatest: 0.229, 0.32, 0.3, 0.093? (a) 0.229 (b) 0.32 (c) 0.3 (d) 0.093
  18. 18.Which is the greatest: 0.144, 0.037, 0.2, 0.26? (a) 0.144 (b) 0.037 (c) 0.2 (d) 0.26
  19. 19.9.61 + 6.5 = ? (a) 10.26 (b) 16.21 (c) 16.11 (d) 16.01
  20. 20.2.51 + 6.1 = ? (a) 8.71 (b) 3.12 (c) 8.51 (d) 8.61
  21. 21.What is the value of the digit 9 in 29.387? (a) 0.9 (b) 90 (c) 9 (d) 0.09
  22. 22.What is the value of the digit 8 in 52.984? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  23. 23.What is the value of the digit 1 in 31.859? (a) 10 (b) 0.1 (c) 0.01 (d) 1
  24. 24.Which is the smallest: 0.61, 0.531, 0.072, 0.6? (a) 0.61 (b) 0.531 (c) 0.072 (d) 0.6
  25. 25.What is the value of the digit 7 in 76.543? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  26. 26.What is the value of the digit 2 in 15.293? (a) 0.002 (b) 0.2 (c) 2 (d) 0.02
  27. 27.3.36 + 5.2 = ? (a) 8.46 (b) 8.66 (c) 8.56 (d) 3.88
  28. 28.1.21 + 2.8 = ? (a) 1.49 (b) 4.11 (c) 3.91 (d) 4.01
  29. 29.What is the value of the digit 7 in 78.921? (a) 70 (b) 0.7 (c) 7 (d) 0.07
  30. 30.2.21 + 5.3 = ? (a) 7.41 (b) 7.61 (c) 2.74 (d) 7.51
  31. 31.7.48 + 7.8 = ? (a) 15.18 (b) 15.28 (c) 8.26 (d) 15.38
  32. 32.Which is the greatest: 0.779, 0.089, 0.8, 0.82? (a) 0.779 (b) 0.089 (c) 0.8 (d) 0.82
  33. 33.2.21 + 4.5 = ? (a) 6.61 (b) 6.81 (c) 2.66 (d) 6.71
  34. 34.What is the value of the digit 9 in 18.975? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  35. 35.What is the value of the digit 9 in 98.463? (a) 0.09 (b) 90 (c) 9 (d) 0.9
  36. 36.Which is the smallest: 0.428, 0.58, 0.5, 0.016? (a) 0.428 (b) 0.58 (c) 0.5 (d) 0.016
  37. 37.5.38 + 3.7 = ? (a) 8.98 (b) 9.08 (c) 5.75 (d) 9.18
  38. 38.What is the value of the digit 5 in 58.169? (a) 0.5 (b) 50 (c) 5 (d) 0.05
  39. 39.5.15 + 3.7 = ? (a) 8.95 (b) 8.85 (c) 5.52 (d) 8.75
  40. 40.8.36 + 1.9 = ? (a) 10.16 (b) 8.55 (c) 10.26 (d) 10.36

Answer key

  1. 8.33
  2. 0.32
  3. 7.93
  4. 0.049
  5. 0.64
  6. 30
  7. 9.63
  8. 8.48
  9. 17.35
  10. 12.36
  11. 9.43
  12. 0.06
  13. 10.51
  14. 0.036
  15. 11.19
  16. 0.49
  17. 0.32
  18. 0.26
  19. 16.11
  20. 8.61
  21. 9
  22. 0.08
  23. 1
  24. 0.072
  25. 70
  26. 0.2
  27. 8.56
  28. 4.01
  29. 70
  30. 7.51
  31. 15.28
  32. 0.82
  33. 6.71
  34. 0.9
  35. 90
  36. 0.016
  37. 9.08
  38. 50
  39. 8.85
  40. 10.26

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