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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 173 · 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 9 in 49.217? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  2. 2.5.48 + 5.7 = ? (a) 11.28 (b) 6.05 (c) 11.18 (d) 11.08
  3. 3.7.14 + 2.3 = ? (a) 9.34 (b) 9.54 (c) 9.44 (d) 7.37
  4. 4.Which is the smallest: 0.094, 0.3, 0.36, 0.224? (a) 0.094 (b) 0.3 (c) 0.36 (d) 0.224
  5. 5.9.92 + 3.9 = ? (a) 13.82 (b) 13.92 (c) 10.31 (d) 13.72
  6. 6.Which is the greatest: 0.022, 0.6, 0.537, 0.61? (a) 0.022 (b) 0.6 (c) 0.537 (d) 0.61
  7. 7.Which is the greatest: 0.471, 0.51, 0.5, 0.082? (a) 0.471 (b) 0.51 (c) 0.5 (d) 0.082
  8. 8.What is the value of the digit 1 in 37.156? (a) 0.01 (b) 0.001 (c) 0.1 (d) 1
  9. 9.7.62 + 4.8 = ? (a) 12.42 (b) 12.32 (c) 8.1 (d) 12.52
  10. 10.Which is the greatest: 0.29, 0.036, 0.2, 0.176? (a) 0.29 (b) 0.036 (c) 0.2 (d) 0.176
  11. 11.Which is the greatest: 0.115, 0.23, 0.2, 0.032? (a) 0.115 (b) 0.23 (c) 0.2 (d) 0.032
  12. 12.Which is the smallest: 0.388, 0.47, 0.4, 0.057? (a) 0.388 (b) 0.47 (c) 0.4 (d) 0.057
  13. 13.What is the value of the digit 9 in 34.591? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  14. 14.9.95 + 6.7 = ? (a) 16.65 (b) 16.55 (c) 16.75 (d) 10.62
  15. 15.Which is the smallest: 0.089, 0.7, 0.77, 0.676? (a) 0.089 (b) 0.7 (c) 0.77 (d) 0.676
  16. 16.2.73 + 6.1 = ? (a) 3.34 (b) 8.93 (c) 8.73 (d) 8.83
  17. 17.1.93 + 9.1 = ? (a) 2.84 (b) 11.13 (c) 11.03 (d) 10.93
  18. 18.What is the value of the digit 9 in 63.894? (a) 0.9 (b) 0.009 (c) 9 (d) 0.09
  19. 19.9.84 + 9.7 = ? (a) 19.64 (b) 19.54 (c) 10.81 (d) 19.44
  20. 20.Which is the smallest: 0.54, 0.5, 0.058, 0.433? (a) 0.54 (b) 0.5 (c) 0.058 (d) 0.433
  21. 21.What is the value of the digit 5 in 43.825? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  22. 22.Which is the smallest: 0.4, 0.42, 0.337, 0.039? (a) 0.4 (b) 0.42 (c) 0.337 (d) 0.039
  23. 23.5.13 + 1.7 = ? (a) 6.93 (b) 6.73 (c) 6.83 (d) 5.3
  24. 24.9.61 + 1.8 = ? (a) 9.79 (b) 11.51 (c) 11.41 (d) 11.31
  25. 25.9.78 + 2.8 = ? (a) 10.06 (b) 12.48 (c) 12.58 (d) 12.68
  26. 26.1.07 + 2.3 = ? (a) 3.27 (b) 1.3 (c) 3.47 (d) 3.37
  27. 27.Which is the smallest: 0.592, 0.69, 0.042, 0.6? (a) 0.592 (b) 0.69 (c) 0.042 (d) 0.6
  28. 28.5.58 + 6.1 = ? (a) 11.68 (b) 11.78 (c) 11.58 (d) 6.19
  29. 29.2.37 + 5.2 = ? (a) 2.89 (b) 7.67 (c) 7.57 (d) 7.47
  30. 30.Which is the greatest: 0.5, 0.56, 0.096, 0.434? (a) 0.5 (b) 0.56 (c) 0.096 (d) 0.434
  31. 31.Which is the greatest: 0.032, 0.275, 0.3, 0.33? (a) 0.032 (b) 0.275 (c) 0.3 (d) 0.33
  32. 32.5.76 + 6.4 = ? (a) 12.06 (b) 12.16 (c) 6.4 (d) 12.26
  33. 33.What is the value of the digit 5 in 53.942? (a) 5 (b) 0.5 (c) 50 (d) 0.05
  34. 34.Which is the greatest: 0.4, 0.051, 0.351, 0.45? (a) 0.4 (b) 0.051 (c) 0.351 (d) 0.45
  35. 35.What is the value of the digit 8 in 98.146? (a) 0.8 (b) 0.08 (c) 80 (d) 8
  36. 36.Which is the smallest: 0.141, 0.27, 0.028, 0.2? (a) 0.141 (b) 0.27 (c) 0.028 (d) 0.2
  37. 37.Which is the greatest: 0.3, 0.31, 0.293, 0.011? (a) 0.3 (b) 0.31 (c) 0.293 (d) 0.011
  38. 38.7.33 + 2.1 = ? (a) 9.53 (b) 9.33 (c) 7.54 (d) 9.43
  39. 39.What is the value of the digit 5 in 25.763? (a) 5 (b) 0.05 (c) 50 (d) 0.5
  40. 40.Which is the greatest: 0.037, 0.31, 0.227, 0.3? (a) 0.037 (b) 0.31 (c) 0.227 (d) 0.3

Answer key

  1. 9
  2. 11.18
  3. 9.44
  4. 0.094
  5. 13.82
  6. 0.61
  7. 0.51
  8. 0.1
  9. 12.42
  10. 0.29
  11. 0.23
  12. 0.057
  13. 0.09
  14. 16.65
  15. 0.089
  16. 8.83
  17. 11.03
  18. 0.09
  19. 19.54
  20. 0.058
  21. 0.005
  22. 0.039
  23. 6.83
  24. 11.41
  25. 12.58
  26. 3.37
  27. 0.042
  28. 11.68
  29. 7.57
  30. 0.56
  31. 0.33
  32. 12.16
  33. 50
  34. 0.45
  35. 8
  36. 0.028
  37. 0.31
  38. 9.43
  39. 5
  40. 0.31

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