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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 218 · 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. 1.7.58 + 7.9 = ? (a) 15.58 (b) 15.48 (c) 8.37 (d) 15.38
  2. 2.What is the value of the digit 2 in 42.369? (a) 0.2 (b) 0.02 (c) 20 (d) 2
  3. 3.2.78 + 1.8 = ? (a) 2.96 (b) 4.48 (c) 4.58 (d) 4.68
  4. 4.6.54 + 6.7 = ? (a) 13.14 (b) 13.24 (c) 13.34 (d) 7.21
  5. 5.3.78 + 3.1 = ? (a) 4.09 (b) 6.98 (c) 6.78 (d) 6.88
  6. 6.7.82 + 7.1 = ? (a) 15.02 (b) 14.92 (c) 14.82 (d) 8.53
  7. 7.What is the value of the digit 5 in 32.951? (a) 0.5 (b) 5 (c) 0.005 (d) 0.05
  8. 8.Which is the greatest: 0.184, 0.22, 0.2, 0.072? (a) 0.184 (b) 0.22 (c) 0.2 (d) 0.072
  9. 9.What is the value of the digit 4 in 24.376? (a) 0.04 (b) 40 (c) 4 (d) 0.4
  10. 10.Which is the smallest: 0.2, 0.056, 0.27, 0.183? (a) 0.2 (b) 0.056 (c) 0.27 (d) 0.183
  11. 11.Which is the greatest: 0.42, 0.022, 0.4, 0.398? (a) 0.42 (b) 0.022 (c) 0.4 (d) 0.398
  12. 12.What is the value of the digit 3 in 95.263? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  13. 13.What is the value of the digit 6 in 12.678? (a) 0.006 (b) 0.6 (c) 0.06 (d) 6
  14. 14.5.81 + 4.7 = ? (a) 10.51 (b) 10.41 (c) 10.61 (d) 6.28
  15. 15.Which is the greatest: 0.28, 0.015, 0.191, 0.2? (a) 0.28 (b) 0.015 (c) 0.191 (d) 0.2
  16. 16.2.97 + 4.3 = ? (a) 7.17 (b) 3.4 (c) 7.27 (d) 7.37
  17. 17.Which is the greatest: 0.028, 0.222, 0.3, 0.34? (a) 0.028 (b) 0.222 (c) 0.3 (d) 0.34
  18. 18.What is the value of the digit 6 in 26.814? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  19. 19.Which is the smallest: 0.715, 0.84, 0.021, 0.8? (a) 0.715 (b) 0.84 (c) 0.021 (d) 0.8
  20. 20.Which is the smallest: 0.048, 0.35, 0.264, 0.3? (a) 0.048 (b) 0.35 (c) 0.264 (d) 0.3
  21. 21.What is the value of the digit 3 in 45.738? (a) 0.3 (b) 3 (c) 0.003 (d) 0.03
  22. 22.2.74 + 3.3 = ? (a) 5.94 (b) 6.14 (c) 3.07 (d) 6.04
  23. 23.8.13 + 5.3 = ? (a) 13.43 (b) 13.33 (c) 13.53 (d) 8.66
  24. 24.Which is the smallest: 0.8, 0.734, 0.81, 0.027? (a) 0.8 (b) 0.734 (c) 0.81 (d) 0.027
  25. 25.Which is the smallest: 0.54, 0.432, 0.5, 0.082? (a) 0.54 (b) 0.432 (c) 0.5 (d) 0.082
  26. 26.Which is the greatest: 0.61, 0.6, 0.535, 0.051? (a) 0.61 (b) 0.6 (c) 0.535 (d) 0.051
  27. 27.6.01 + 8.8 = ? (a) 6.89 (b) 14.71 (c) 14.81 (d) 14.91
  28. 28.What is the value of the digit 5 in 25.839? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  29. 29.What is the value of the digit 8 in 72.318? (a) 0.08 (b) 0.8 (c) 8 (d) 0.008
  30. 30.Which is the greatest: 0.6, 0.582, 0.099, 0.66? (a) 0.6 (b) 0.582 (c) 0.099 (d) 0.66
  31. 31.Which is the greatest: 0.21, 0.018, 0.2, 0.169? (a) 0.21 (b) 0.018 (c) 0.2 (d) 0.169
  32. 32.1.73 + 1.1 = ? (a) 2.93 (b) 2.73 (c) 1.84 (d) 2.83
  33. 33.8.55 + 3.9 = ? (a) 8.94 (b) 12.55 (c) 12.35 (d) 12.45
  34. 34.3.11 + 4.9 = ? (a) 8.11 (b) 3.6 (c) 8.01 (d) 7.91
  35. 35.2.76 + 4.3 = ? (a) 7.06 (b) 6.96 (c) 3.19 (d) 7.16
  36. 36.1.06 + 1.4 = ? (a) 1.2 (b) 2.56 (c) 2.36 (d) 2.46
  37. 37.Which is the greatest: 0.022, 0.8, 0.779, 0.89? (a) 0.022 (b) 0.8 (c) 0.779 (d) 0.89
  38. 38.Which is the greatest: 0.5, 0.442, 0.026, 0.57? (a) 0.5 (b) 0.442 (c) 0.026 (d) 0.57
  39. 39.Which is the greatest: 0.2, 0.119, 0.061, 0.26? (a) 0.2 (b) 0.119 (c) 0.061 (d) 0.26
  40. 40.What is the value of the digit 8 in 75.824? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008

Answer key

  1. 15.48
  2. 2
  3. 4.58
  4. 13.24
  5. 6.88
  6. 14.92
  7. 0.05
  8. 0.22
  9. 4
  10. 0.056
  11. 0.42
  12. 0.003
  13. 0.6
  14. 10.51
  15. 0.28
  16. 7.27
  17. 0.34
  18. 6
  19. 0.021
  20. 0.048
  21. 0.03
  22. 6.04
  23. 13.43
  24. 0.027
  25. 0.082
  26. 0.61
  27. 14.81
  28. 5
  29. 0.008
  30. 0.66
  31. 0.21
  32. 2.83
  33. 12.45
  34. 8.01
  35. 7.06
  36. 2.46
  37. 0.89
  38. 0.57
  39. 0.26
  40. 0.8

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