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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 560 · 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.What is the value of the digit 4 in 61.487? (a) 0.004 (b) 0.04 (c) 0.4 (d) 4
  2. 2.7.71 + 2.6 = ? (a) 10.31 (b) 7.97 (c) 10.21 (d) 10.41
  3. 3.What is the value of the digit 4 in 72.415? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  4. 4.8.38 + 2.3 = ? (a) 10.58 (b) 8.61 (c) 10.78 (d) 10.68
  5. 5.3.99 + 2.1 = ? (a) 5.99 (b) 4.2 (c) 6.19 (d) 6.09
  6. 6.7.21 + 6.7 = ? (a) 13.81 (b) 14.01 (c) 7.88 (d) 13.91
  7. 7.Which is the greatest: 0.134, 0.2, 0.28, 0.077? (a) 0.134 (b) 0.2 (c) 0.28 (d) 0.077
  8. 8.3.41 + 4.5 = ? (a) 7.91 (b) 8.01 (c) 3.86 (d) 7.81
  9. 9.What is the value of the digit 6 in 76.489? (a) 6 (b) 0.6 (c) 60 (d) 0.06
  10. 10.5.02 + 2.3 = ? (a) 7.42 (b) 7.22 (c) 7.32 (d) 5.25
  11. 11.Which is the greatest: 0.766, 0.025, 0.87, 0.8? (a) 0.766 (b) 0.025 (c) 0.87 (d) 0.8
  12. 12.Which is the greatest: 0.076, 0.6, 0.577, 0.61? (a) 0.076 (b) 0.6 (c) 0.577 (d) 0.61
  13. 13.2.99 + 3.7 = ? (a) 6.79 (b) 3.36 (c) 6.69 (d) 6.59
  14. 14.3.86 + 4.7 = ? (a) 8.66 (b) 8.56 (c) 8.46 (d) 4.33
  15. 15.9.75 + 8.1 = ? (a) 17.85 (b) 17.95 (c) 10.56 (d) 17.75
  16. 16.Which is the smallest: 0.323, 0.4, 0.41, 0.015? (a) 0.323 (b) 0.4 (c) 0.41 (d) 0.015
  17. 17.Which is the greatest: 0.097, 0.195, 0.28, 0.2? (a) 0.097 (b) 0.195 (c) 0.28 (d) 0.2
  18. 18.What is the value of the digit 4 in 82.374? (a) 0.4 (b) 0.004 (c) 4 (d) 0.04
  19. 19.Which is the greatest: 0.726, 0.88, 0.081, 0.8? (a) 0.726 (b) 0.88 (c) 0.081 (d) 0.8
  20. 20.Which is the smallest: 0.338, 0.43, 0.062, 0.4? (a) 0.338 (b) 0.43 (c) 0.062 (d) 0.4
  21. 21.5.97 + 9.4 = ? (a) 15.47 (b) 6.91 (c) 15.37 (d) 15.27
  22. 22.2.02 + 9.2 = ? (a) 2.94 (b) 11.12 (c) 11.22 (d) 11.32
  23. 23.Which is the greatest: 0.011, 0.6, 0.62, 0.556? (a) 0.011 (b) 0.6 (c) 0.62 (d) 0.556
  24. 24.4.96 + 4.7 = ? (a) 9.56 (b) 9.76 (c) 9.66 (d) 5.43
  25. 25.Which is the greatest: 0.22, 0.082, 0.165, 0.2? (a) 0.22 (b) 0.082 (c) 0.165 (d) 0.2
  26. 26.Which is the smallest: 0.335, 0.4, 0.095, 0.47? (a) 0.335 (b) 0.4 (c) 0.095 (d) 0.47
  27. 27.4.65 + 1.1 = ? (a) 4.76 (b) 5.85 (c) 5.65 (d) 5.75
  28. 28.3.67 + 8.7 = ? (a) 4.54 (b) 12.27 (c) 12.47 (d) 12.37
  29. 29.Which is the smallest: 0.82, 0.022, 0.757, 0.8? (a) 0.82 (b) 0.022 (c) 0.757 (d) 0.8
  30. 30.1.31 + 7.7 = ? (a) 8.91 (b) 2.08 (c) 9.11 (d) 9.01
  31. 31.2.82 + 6.5 = ? (a) 9.32 (b) 3.47 (c) 9.42 (d) 9.22
  32. 32.What is the value of the digit 2 in 17.924? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  33. 33.Which is the smallest: 0.782, 0.057, 0.83, 0.8? (a) 0.782 (b) 0.057 (c) 0.83 (d) 0.8
  34. 34.4.09 + 8.8 = ? (a) 12.79 (b) 12.99 (c) 12.89 (d) 4.97
  35. 35.5.42 + 6.7 = ? (a) 12.12 (b) 6.09 (c) 12.02 (d) 12.22
  36. 36.What is the value of the digit 4 in 14.963? (a) 0.04 (b) 0.4 (c) 4 (d) 40
  37. 37.What is the value of the digit 1 in 58.712? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  38. 38.3.56 + 2.1 = ? (a) 5.56 (b) 5.76 (c) 5.66 (d) 3.77
  39. 39.2.89 + 3.4 = ? (a) 6.29 (b) 6.39 (c) 3.23 (d) 6.19
  40. 40.What is the value of the digit 2 in 19.742? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002

Answer key

  1. 0.4
  2. 10.31
  3. 0.4
  4. 10.68
  5. 6.09
  6. 13.91
  7. 0.28
  8. 7.91
  9. 6
  10. 7.32
  11. 0.87
  12. 0.61
  13. 6.69
  14. 8.56
  15. 17.85
  16. 0.015
  17. 0.28
  18. 0.004
  19. 0.88
  20. 0.062
  21. 15.37
  22. 11.22
  23. 0.62
  24. 9.66
  25. 0.22
  26. 0.095
  27. 5.75
  28. 12.37
  29. 0.022
  30. 9.01
  31. 9.32
  32. 0.02
  33. 0.057
  34. 12.89
  35. 12.12
  36. 4
  37. 0.01
  38. 5.66
  39. 6.29
  40. 0.002

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