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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 186 · 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. 1.8.21 + 6.9 = ? (a) 15.21 (b) 15.01 (c) 15.11 (d) 8.9
  2. 2.Which is the greatest: 0.022, 0.22, 0.2, 0.128? (a) 0.022 (b) 0.22 (c) 0.2 (d) 0.128
  3. 3.7.74 + 6.8 = ? (a) 8.42 (b) 14.54 (c) 14.64 (d) 14.44
  4. 4.What is the value of the digit 5 in 18.546? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  5. 5.8.01 + 3.6 = ? (a) 11.71 (b) 11.51 (c) 11.61 (d) 8.37
  6. 6.9.38 + 9.6 = ? (a) 18.88 (b) 10.34 (c) 18.98 (d) 19.08
  7. 7.Which is the greatest: 0.032, 0.188, 0.2, 0.22? (a) 0.032 (b) 0.188 (c) 0.2 (d) 0.22
  8. 8.Which is the greatest: 0.462, 0.51, 0.5, 0.066? (a) 0.462 (b) 0.51 (c) 0.5 (d) 0.066
  9. 9.3.98 + 4.3 = ? (a) 8.38 (b) 8.18 (c) 8.28 (d) 4.41
  10. 10.Which is the smallest: 0.041, 0.61, 0.6, 0.588? (a) 0.041 (b) 0.61 (c) 0.6 (d) 0.588
  11. 11.Which is the smallest: 0.4, 0.48, 0.337, 0.091? (a) 0.4 (b) 0.48 (c) 0.337 (d) 0.091
  12. 12.1.26 + 2.9 = ? (a) 4.06 (b) 4.16 (c) 4.26 (d) 1.55
  13. 13.Which is the smallest: 0.013, 0.84, 0.8, 0.717? (a) 0.013 (b) 0.84 (c) 0.8 (d) 0.717
  14. 14.Which is the smallest: 0.82, 0.032, 0.8, 0.771? (a) 0.82 (b) 0.032 (c) 0.8 (d) 0.771
  15. 15.Which is the greatest: 0.078, 0.723, 0.83, 0.8? (a) 0.078 (b) 0.723 (c) 0.83 (d) 0.8
  16. 16.7.75 + 7.9 = ? (a) 8.54 (b) 15.55 (c) 15.75 (d) 15.65
  17. 17.7.32 + 7.2 = ? (a) 14.62 (b) 8.04 (c) 14.42 (d) 14.52
  18. 18.What is the value of the digit 5 in 42.951? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  19. 19.Which is the greatest: 0.3, 0.064, 0.33, 0.226? (a) 0.3 (b) 0.064 (c) 0.33 (d) 0.226
  20. 20.Which is the greatest: 0.021, 0.74, 0.7, 0.656? (a) 0.021 (b) 0.74 (c) 0.7 (d) 0.656
  21. 21.4.28 + 7.6 = ? (a) 11.78 (b) 11.98 (c) 5.04 (d) 11.88
  22. 22.What is the value of the digit 8 in 12.857? (a) 0.08 (b) 0.008 (c) 8 (d) 0.8
  23. 23.What is the value of the digit 4 in 59.614? (a) 0.004 (b) 0.4 (c) 0.04 (d) 4
  24. 24.What is the value of the digit 9 in 94.685? (a) 0.9 (b) 0.09 (c) 90 (d) 9
  25. 25.Which is the greatest: 0.086, 0.61, 0.6, 0.525? (a) 0.086 (b) 0.61 (c) 0.6 (d) 0.525
  26. 26.Which is the smallest: 0.755, 0.031, 0.8, 0.81? (a) 0.755 (b) 0.031 (c) 0.8 (d) 0.81
  27. 27.7.66 + 9.7 = ? (a) 17.36 (b) 17.26 (c) 17.46 (d) 8.63
  28. 28.What is the value of the digit 2 in 26.591? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  29. 29.What is the value of the digit 5 in 56.172? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  30. 30.2.41 + 3.5 = ? (a) 2.76 (b) 5.91 (c) 6.01 (d) 5.81
  31. 31.4.16 + 9.9 = ? (a) 5.15 (b) 14.16 (c) 14.06 (d) 13.96
  32. 32.Which is the smallest: 0.014, 0.54, 0.5, 0.469? (a) 0.014 (b) 0.54 (c) 0.5 (d) 0.469
  33. 33.7.46 + 8.7 = ? (a) 16.06 (b) 16.16 (c) 8.33 (d) 16.26
  34. 34.Which is the smallest: 0.718, 0.86, 0.034, 0.8? (a) 0.718 (b) 0.86 (c) 0.034 (d) 0.8
  35. 35.What is the value of the digit 8 in 75.861? (a) 0.8 (b) 0.008 (c) 8 (d) 0.08
  36. 36.6.71 + 9.5 = ? (a) 7.66 (b) 16.11 (c) 16.31 (d) 16.21
  37. 37.2.19 + 5.7 = ? (a) 7.99 (b) 2.76 (c) 7.89 (d) 7.79
  38. 38.7.71 + 3.3 = ? (a) 10.91 (b) 11.11 (c) 8.04 (d) 11.01
  39. 39.What is the value of the digit 3 in 15.423? (a) 0.003 (b) 0.3 (c) 3 (d) 0.03
  40. 40.What is the value of the digit 9 in 19.753? (a) 90 (b) 9 (c) 0.9 (d) 0.09

Answer key

  1. 15.11
  2. 0.22
  3. 14.54
  4. 0.5
  5. 11.61
  6. 18.98
  7. 0.22
  8. 0.51
  9. 8.28
  10. 0.041
  11. 0.091
  12. 4.16
  13. 0.013
  14. 0.032
  15. 0.83
  16. 15.65
  17. 14.52
  18. 0.05
  19. 0.33
  20. 0.74
  21. 11.88
  22. 0.8
  23. 0.004
  24. 90
  25. 0.61
  26. 0.031
  27. 17.36
  28. 20
  29. 50
  30. 5.91
  31. 14.06
  32. 0.014
  33. 16.16
  34. 0.034
  35. 0.8
  36. 16.21
  37. 7.89
  38. 11.01
  39. 0.003
  40. 9

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