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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 118 · 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: 0.213, 0.3, 0.075, 0.32? (a) 0.213 (b) 0.3 (c) 0.075 (d) 0.32
  2. 2.Which is the greatest: 0.147, 0.21, 0.012, 0.2? (a) 0.147 (b) 0.21 (c) 0.012 (d) 0.2
  3. 3.2.75 + 9.9 = ? (a) 3.74 (b) 12.75 (c) 12.55 (d) 12.65
  4. 4.2.71 + 1.2 = ? (a) 2.83 (b) 4.01 (c) 3.81 (d) 3.91
  5. 5.9.49 + 7.7 = ? (a) 10.26 (b) 17.29 (c) 17.19 (d) 17.09
  6. 6.What is the value of the digit 1 in 25.761? (a) 1 (b) 0.01 (c) 0.001 (d) 0.1
  7. 7.Which is the greatest: 0.012, 0.135, 0.2, 0.22? (a) 0.012 (b) 0.135 (c) 0.2 (d) 0.22
  8. 8.What is the value of the digit 3 in 42.359? (a) 0.03 (b) 3 (c) 0.3 (d) 0.003
  9. 9.What is the value of the digit 1 in 34.615? (a) 0.1 (b) 0.001 (c) 0.01 (d) 1
  10. 10.What is the value of the digit 3 in 42.973? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  11. 11.Which is the smallest: 0.23, 0.132, 0.046, 0.2? (a) 0.23 (b) 0.132 (c) 0.046 (d) 0.2
  12. 12.6.59 + 8.8 = ? (a) 15.39 (b) 15.49 (c) 7.47 (d) 15.29
  13. 13.7.21 + 2.1 = ? (a) 9.41 (b) 9.31 (c) 7.42 (d) 9.21
  14. 14.5.79 + 3.9 = ? (a) 6.18 (b) 9.79 (c) 9.59 (d) 9.69
  15. 15.Which is the smallest: 0.091, 0.58, 0.497, 0.5? (a) 0.091 (b) 0.58 (c) 0.497 (d) 0.5
  16. 16.3.93 + 7.1 = ? (a) 4.64 (b) 10.93 (c) 11.03 (d) 11.13
  17. 17.Which is the smallest: 0.583, 0.023, 0.65, 0.6? (a) 0.583 (b) 0.023 (c) 0.65 (d) 0.6
  18. 18.What is the value of the digit 7 in 75.928? (a) 7 (b) 0.7 (c) 0.07 (d) 70
  19. 19.What is the value of the digit 8 in 87.635? (a) 0.08 (b) 80 (c) 0.8 (d) 8
  20. 20.Which is the smallest: 0.75, 0.7, 0.616, 0.096? (a) 0.75 (b) 0.7 (c) 0.616 (d) 0.096
  21. 21.9.52 + 4.3 = ? (a) 13.92 (b) 13.72 (c) 9.95 (d) 13.82
  22. 22.1.13 + 8.1 = ? (a) 1.94 (b) 9.23 (c) 9.13 (d) 9.33
  23. 23.What is the value of the digit 1 in 25.371? (a) 0.01 (b) 0.001 (c) 1 (d) 0.1
  24. 24.2.04 + 8.6 = ? (a) 10.54 (b) 10.74 (c) 10.64 (d) 2.9
  25. 25.Which is the greatest: 0.017, 0.3, 0.31, 0.232? (a) 0.017 (b) 0.3 (c) 0.31 (d) 0.232
  26. 26.Which is the greatest: 0.416, 0.51, 0.5, 0.031? (a) 0.416 (b) 0.51 (c) 0.5 (d) 0.031
  27. 27.8.38 + 4.1 = ? (a) 8.79 (b) 12.58 (c) 12.48 (d) 12.38
  28. 28.Which is the smallest: 0.033, 0.8, 0.715, 0.84? (a) 0.033 (b) 0.8 (c) 0.715 (d) 0.84
  29. 29.Which is the greatest: 0.213, 0.026, 0.37, 0.3? (a) 0.213 (b) 0.026 (c) 0.37 (d) 0.3
  30. 30.9.91 + 4.4 = ? (a) 14.31 (b) 14.21 (c) 14.41 (d) 10.35
  31. 31.8.01 + 7.8 = ? (a) 15.91 (b) 8.79 (c) 15.71 (d) 15.81
  32. 32.Which is the greatest: 0.88, 0.095, 0.787, 0.8? (a) 0.88 (b) 0.095 (c) 0.787 (d) 0.8
  33. 33.Which is the smallest: 0.3, 0.33, 0.246, 0.063? (a) 0.3 (b) 0.33 (c) 0.246 (d) 0.063
  34. 34.What is the value of the digit 8 in 61.583? (a) 0.8 (b) 0.08 (c) 0.008 (d) 8
  35. 35.Which is the smallest: 0.72, 0.7, 0.028, 0.622? (a) 0.72 (b) 0.7 (c) 0.028 (d) 0.622
  36. 36.8.61 + 7.9 = ? (a) 16.51 (b) 16.41 (c) 16.61 (d) 9.4
  37. 37.What is the value of the digit 4 in 96.345? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  38. 38.2.61 + 2.5 = ? (a) 2.86 (b) 5.11 (c) 5.21 (d) 5.01
  39. 39.Which is the smallest: 0.79, 0.627, 0.067, 0.7? (a) 0.79 (b) 0.627 (c) 0.067 (d) 0.7
  40. 40.Which is the greatest: 0.3, 0.014, 0.236, 0.38? (a) 0.3 (b) 0.014 (c) 0.236 (d) 0.38

Answer key

  1. 0.32
  2. 0.21
  3. 12.65
  4. 3.91
  5. 17.19
  6. 0.001
  7. 0.22
  8. 0.3
  9. 0.01
  10. 0.003
  11. 0.046
  12. 15.39
  13. 9.31
  14. 9.69
  15. 0.091
  16. 11.03
  17. 0.023
  18. 70
  19. 80
  20. 0.096
  21. 13.82
  22. 9.23
  23. 0.001
  24. 10.64
  25. 0.31
  26. 0.51
  27. 12.48
  28. 0.033
  29. 0.37
  30. 14.31
  31. 15.81
  32. 0.88
  33. 0.063
  34. 0.08
  35. 0.028
  36. 16.51
  37. 0.04
  38. 5.11
  39. 0.067
  40. 0.38

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