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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 44 · 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. 1.1.24 + 9.3 = ? (a) 2.17 (b) 10.54 (c) 10.64 (d) 10.44
  2. 2.3.73 + 2.2 = ? (a) 3.95 (b) 6.03 (c) 5.83 (d) 5.93
  3. 3.Which is the smallest: 0.027, 0.28, 0.164, 0.2? (a) 0.027 (b) 0.28 (c) 0.164 (d) 0.2
  4. 4.Which is the smallest: 0.34, 0.262, 0.021, 0.3? (a) 0.34 (b) 0.262 (c) 0.021 (d) 0.3
  5. 5.What is the value of the digit 4 in 62.435? (a) 4 (b) 0.4 (c) 0.004 (d) 0.04
  6. 6.What is the value of the digit 8 in 58.126? (a) 0.08 (b) 0.8 (c) 80 (d) 8
  7. 7.What is the value of the digit 4 in 27.541? (a) 0.4 (b) 0.004 (c) 0.04 (d) 4
  8. 8.5.23 + 9.1 = ? (a) 14.23 (b) 14.43 (c) 14.33 (d) 6.14
  9. 9.1.24 + 5.7 = ? (a) 7.04 (b) 6.94 (c) 1.81 (d) 6.84
  10. 10.Which is the smallest: 0.76, 0.649, 0.031, 0.7? (a) 0.76 (b) 0.649 (c) 0.031 (d) 0.7
  11. 11.7.99 + 7.2 = ? (a) 15.09 (b) 15.29 (c) 15.19 (d) 8.71
  12. 12.What is the value of the digit 3 in 68.319? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  13. 13.2.02 + 4.9 = ? (a) 2.51 (b) 7.02 (c) 6.82 (d) 6.92
  14. 14.Which is the smallest: 0.752, 0.076, 0.8, 0.86? (a) 0.752 (b) 0.076 (c) 0.8 (d) 0.86
  15. 15.8.96 + 6.2 = ? (a) 15.26 (b) 15.16 (c) 9.58 (d) 15.06
  16. 16.What is the value of the digit 8 in 68.319? (a) 8 (b) 80 (c) 0.08 (d) 0.8
  17. 17.1.47 + 9.4 = ? (a) 10.77 (b) 10.97 (c) 10.87 (d) 2.41
  18. 18.1.29 + 6.2 = ? (a) 1.91 (b) 7.49 (c) 7.39 (d) 7.59
  19. 19.What is the value of the digit 6 in 76.134? (a) 0.06 (b) 0.6 (c) 6 (d) 60
  20. 20.What is the value of the digit 6 in 79.681? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  21. 21.4.46 + 2.8 = ? (a) 7.26 (b) 7.36 (c) 4.74 (d) 7.16
  22. 22.Which is the smallest: 0.4, 0.44, 0.039, 0.312? (a) 0.4 (b) 0.44 (c) 0.039 (d) 0.312
  23. 23.1.47 + 3.3 = ? (a) 4.87 (b) 1.8 (c) 4.67 (d) 4.77
  24. 24.8.81 + 4.6 = ? (a) 13.51 (b) 13.41 (c) 13.31 (d) 9.27
  25. 25.Which is the greatest: 0.011, 0.45, 0.4, 0.341? (a) 0.011 (b) 0.45 (c) 0.4 (d) 0.341
  26. 26.Which is the smallest: 0.036, 0.4, 0.46, 0.322? (a) 0.036 (b) 0.4 (c) 0.46 (d) 0.322
  27. 27.9.37 + 6.5 = ? (a) 10.02 (b) 15.87 (c) 15.77 (d) 15.97
  28. 28.What is the value of the digit 6 in 69.547? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  29. 29.3.01 + 6.8 = ? (a) 9.71 (b) 9.81 (c) 9.91 (d) 3.69
  30. 30.2.81 + 1.8 = ? (a) 4.71 (b) 4.61 (c) 4.51 (d) 2.99
  31. 31.Which is the greatest: 0.163, 0.2, 0.22, 0.082? (a) 0.163 (b) 0.2 (c) 0.22 (d) 0.082
  32. 32.Which is the greatest: 0.48, 0.374, 0.4, 0.014? (a) 0.48 (b) 0.374 (c) 0.4 (d) 0.014
  33. 33.What is the value of the digit 5 in 58.214? (a) 50 (b) 5 (c) 0.05 (d) 0.5
  34. 34.What is the value of the digit 2 in 28.397? (a) 20 (b) 2 (c) 0.2 (d) 0.02
  35. 35.3.05 + 3.1 = ? (a) 6.25 (b) 3.36 (c) 6.15 (d) 6.05
  36. 36.What is the value of the digit 4 in 64.285? (a) 40 (b) 0.4 (c) 4 (d) 0.04
  37. 37.2.05 + 1.8 = ? (a) 3.95 (b) 3.85 (c) 2.23 (d) 3.75
  38. 38.5.87 + 2.1 = ? (a) 8.07 (b) 7.87 (c) 7.97 (d) 6.08
  39. 39.3.87 + 2.5 = ? (a) 4.12 (b) 6.47 (c) 6.27 (d) 6.37
  40. 40.What is the value of the digit 6 in 97.861? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06

Answer key

  1. 10.54
  2. 5.93
  3. 0.027
  4. 0.021
  5. 0.4
  6. 8
  7. 0.04
  8. 14.33
  9. 6.94
  10. 0.031
  11. 15.19
  12. 0.3
  13. 6.92
  14. 0.076
  15. 15.16
  16. 8
  17. 10.87
  18. 7.49
  19. 6
  20. 0.6
  21. 7.26
  22. 0.039
  23. 4.77
  24. 13.41
  25. 0.45
  26. 0.036
  27. 15.87
  28. 60
  29. 9.81
  30. 4.61
  31. 0.22
  32. 0.48
  33. 50
  34. 20
  35. 6.15
  36. 4
  37. 3.85
  38. 7.97
  39. 6.37
  40. 0.06

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