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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 106 · 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.Which is the greatest: 0.7, 0.666, 0.74, 0.015? (a) 0.7 (b) 0.666 (c) 0.74 (d) 0.015
  2. 2.2.57 + 8.1 = ? (a) 10.77 (b) 3.38 (c) 10.67 (d) 10.57
  3. 3.1.66 + 6.8 = ? (a) 8.36 (b) 8.56 (c) 8.46 (d) 2.34
  4. 4.8.39 + 8.7 = ? (a) 16.99 (b) 9.26 (c) 17.09 (d) 17.19
  5. 5.8.16 + 7.1 = ? (a) 15.16 (b) 15.36 (c) 15.26 (d) 8.87
  6. 6.6.81 + 3.1 = ? (a) 10.01 (b) 9.81 (c) 7.12 (d) 9.91
  7. 7.1.27 + 2.6 = ? (a) 1.53 (b) 3.97 (c) 3.77 (d) 3.87
  8. 8.6.15 + 4.5 = ? (a) 10.65 (b) 10.75 (c) 6.6 (d) 10.55
  9. 9.4.84 + 3.5 = ? (a) 8.24 (b) 5.19 (c) 8.34 (d) 8.44
  10. 10.Which is the smallest: 0.6, 0.046, 0.68, 0.531? (a) 0.6 (b) 0.046 (c) 0.68 (d) 0.531
  11. 11.1.84 + 1.2 = ? (a) 3.14 (b) 3.04 (c) 2.94 (d) 1.96
  12. 12.What is the value of the digit 7 in 43.728? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  13. 13.Which is the greatest: 0.112, 0.22, 0.2, 0.025? (a) 0.112 (b) 0.22 (c) 0.2 (d) 0.025
  14. 14.3.94 + 4.3 = ? (a) 8.34 (b) 8.14 (c) 4.37 (d) 8.24
  15. 15.What is the value of the digit 2 in 82.147? (a) 20 (b) 0.02 (c) 0.2 (d) 2
  16. 16.4.27 + 5.9 = ? (a) 10.07 (b) 4.86 (c) 10.27 (d) 10.17
  17. 17.Which is the greatest: 0.4, 0.332, 0.41, 0.036? (a) 0.4 (b) 0.332 (c) 0.41 (d) 0.036
  18. 18.What is the value of the digit 7 in 97.236? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  19. 19.5.33 + 1.5 = ? (a) 5.48 (b) 6.93 (c) 6.83 (d) 6.73
  20. 20.9.55 + 5.2 = ? (a) 14.65 (b) 14.75 (c) 10.07 (d) 14.85
  21. 21.Which is the smallest: 0.7, 0.059, 0.74, 0.661? (a) 0.7 (b) 0.059 (c) 0.74 (d) 0.661
  22. 22.Which is the smallest: 0.43, 0.018, 0.4, 0.314? (a) 0.43 (b) 0.018 (c) 0.4 (d) 0.314
  23. 23.Which is the smallest: 0.6, 0.093, 0.62, 0.589? (a) 0.6 (b) 0.093 (c) 0.62 (d) 0.589
  24. 24.What is the value of the digit 4 in 18.534? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  25. 25.What is the value of the digit 2 in 82.417? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  26. 26.What is the value of the digit 1 in 14.827? (a) 0.01 (b) 10 (c) 0.1 (d) 1
  27. 27.Which is the smallest: 0.017, 0.47, 0.311, 0.4? (a) 0.017 (b) 0.47 (c) 0.311 (d) 0.4
  28. 28.Which is the smallest: 0.013, 0.82, 0.8, 0.739? (a) 0.013 (b) 0.82 (c) 0.8 (d) 0.739
  29. 29.4.21 + 4.7 = ? (a) 8.91 (b) 8.81 (c) 9.01 (d) 4.68
  30. 30.What is the value of the digit 3 in 12.938? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  31. 31.Which is the greatest: 0.069, 0.81, 0.713, 0.8? (a) 0.069 (b) 0.81 (c) 0.713 (d) 0.8
  32. 32.3.27 + 8.5 = ? (a) 11.67 (b) 11.77 (c) 11.87 (d) 4.12
  33. 33.9.78 + 3.3 = ? (a) 12.98 (b) 10.11 (c) 13.18 (d) 13.08
  34. 34.Which is the smallest: 0.249, 0.39, 0.052, 0.3? (a) 0.249 (b) 0.39 (c) 0.052 (d) 0.3
  35. 35.What is the value of the digit 1 in 45.137? (a) 0.001 (b) 0.01 (c) 1 (d) 0.1
  36. 36.Which is the smallest: 0.69, 0.082, 0.522, 0.6? (a) 0.69 (b) 0.082 (c) 0.522 (d) 0.6
  37. 37.7.45 + 7.8 = ? (a) 15.35 (b) 15.15 (c) 15.25 (d) 8.23
  38. 38.3.03 + 5.7 = ? (a) 8.73 (b) 8.83 (c) 8.63 (d) 3.6
  39. 39.2.81 + 9.6 = ? (a) 12.41 (b) 3.77 (c) 12.31 (d) 12.51
  40. 40.What is the value of the digit 3 in 71.389? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003

Answer key

  1. 0.74
  2. 10.67
  3. 8.46
  4. 17.09
  5. 15.26
  6. 9.91
  7. 3.87
  8. 10.65
  9. 8.34
  10. 0.046
  11. 3.04
  12. 0.7
  13. 0.22
  14. 8.24
  15. 2
  16. 10.17
  17. 0.41
  18. 7
  19. 6.83
  20. 14.75
  21. 0.059
  22. 0.018
  23. 0.093
  24. 0.004
  25. 2
  26. 10
  27. 0.017
  28. 0.013
  29. 8.91
  30. 0.03
  31. 0.81
  32. 11.77
  33. 13.08
  34. 0.052
  35. 0.1
  36. 0.082
  37. 15.25
  38. 8.73
  39. 12.41
  40. 0.3

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