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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 702 · 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 6 in 26.153? (a) 6 (b) 60 (c) 0.6 (d) 0.06
  2. 2.9.32 + 4.6 = ? (a) 9.78 (b) 13.82 (c) 14.02 (d) 13.92
  3. 3.8.78 + 2.2 = ? (a) 10.88 (b) 9 (c) 10.98 (d) 11.08
  4. 4.Which is the smallest: 0.6, 0.525, 0.63, 0.072? (a) 0.6 (b) 0.525 (c) 0.63 (d) 0.072
  5. 5.What is the value of the digit 7 in 73.482? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  6. 6.9.29 + 1.6 = ? (a) 9.45 (b) 10.89 (c) 10.79 (d) 10.99
  7. 7.What is the value of the digit 7 in 72.156? (a) 0.07 (b) 70 (c) 7 (d) 0.7
  8. 8.Which is the smallest: 0.4, 0.386, 0.066, 0.41? (a) 0.4 (b) 0.386 (c) 0.066 (d) 0.41
  9. 9.What is the value of the digit 3 in 27.369? (a) 0.003 (b) 3 (c) 0.03 (d) 0.3
  10. 10.Which is the greatest: 0.24, 0.2, 0.168, 0.015? (a) 0.24 (b) 0.2 (c) 0.168 (d) 0.015
  11. 11.Which is the smallest: 0.642, 0.7, 0.022, 0.75? (a) 0.642 (b) 0.7 (c) 0.022 (d) 0.75
  12. 12.9.05 + 9.5 = ? (a) 18.55 (b) 18.45 (c) 18.65 (d) 10
  13. 13.What is the value of the digit 8 in 72.836? (a) 0.008 (b) 8 (c) 0.8 (d) 0.08
  14. 14.Which is the smallest: 0.45, 0.4, 0.014, 0.361? (a) 0.45 (b) 0.4 (c) 0.014 (d) 0.361
  15. 15.5.38 + 7.2 = ? (a) 12.58 (b) 12.68 (c) 12.48 (d) 6.1
  16. 16.2.97 + 2.8 = ? (a) 5.77 (b) 3.25 (c) 5.67 (d) 5.87
  17. 17.What is the value of the digit 9 in 49.123? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  18. 18.What is the value of the digit 1 in 36.814? (a) 0.1 (b) 1 (c) 0.001 (d) 0.01
  19. 19.Which is the smallest: 0.229, 0.3, 0.32, 0.013? (a) 0.229 (b) 0.3 (c) 0.32 (d) 0.013
  20. 20.What is the value of the digit 6 in 13.649? (a) 0.6 (b) 0.006 (c) 6 (d) 0.06
  21. 21.4.12 + 6.1 = ? (a) 10.22 (b) 10.12 (c) 4.73 (d) 10.32
  22. 22.7.62 + 3.6 = ? (a) 11.12 (b) 7.98 (c) 11.32 (d) 11.22
  23. 23.Which is the greatest: 0.2, 0.23, 0.177, 0.037? (a) 0.2 (b) 0.23 (c) 0.177 (d) 0.037
  24. 24.Which is the greatest: 0.053, 0.89, 0.728, 0.8? (a) 0.053 (b) 0.89 (c) 0.728 (d) 0.8
  25. 25.Which is the smallest: 0.652, 0.73, 0.024, 0.7? (a) 0.652 (b) 0.73 (c) 0.024 (d) 0.7
  26. 26.5.23 + 2.1 = ? (a) 7.33 (b) 5.44 (c) 7.43 (d) 7.23
  27. 27.1.64 + 1.4 = ? (a) 3.14 (b) 3.04 (c) 1.78 (d) 2.94
  28. 28.What is the value of the digit 4 in 52.491? (a) 0.04 (b) 0.4 (c) 0.004 (d) 4
  29. 29.Which is the greatest: 0.3, 0.36, 0.242, 0.063? (a) 0.3 (b) 0.36 (c) 0.242 (d) 0.063
  30. 30.7.58 + 9.6 = ? (a) 8.54 (b) 17.18 (c) 17.08 (d) 17.28
  31. 31.Which is the smallest: 0.3, 0.33, 0.213, 0.062? (a) 0.3 (b) 0.33 (c) 0.213 (d) 0.062
  32. 32.3.07 + 4.6 = ? (a) 7.77 (b) 7.67 (c) 7.57 (d) 3.53
  33. 33.What is the value of the digit 7 in 81.976? (a) 0.7 (b) 0.007 (c) 7 (d) 0.07
  34. 34.7.37 + 7.5 = ? (a) 8.12 (b) 14.77 (c) 14.97 (d) 14.87
  35. 35.5.33 + 5.6 = ? (a) 10.83 (b) 10.93 (c) 11.03 (d) 5.89
  36. 36.Which is the smallest: 0.596, 0.6, 0.066, 0.69? (a) 0.596 (b) 0.6 (c) 0.066 (d) 0.69
  37. 37.2.98 + 3.9 = ? (a) 6.88 (b) 3.37 (c) 6.78 (d) 6.98
  38. 38.Which is the smallest: 0.019, 0.41, 0.4, 0.353? (a) 0.019 (b) 0.41 (c) 0.4 (d) 0.353
  39. 39.Which is the smallest: 0.778, 0.016, 0.89, 0.8? (a) 0.778 (b) 0.016 (c) 0.89 (d) 0.8
  40. 40.5.66 + 8.5 = ? (a) 6.51 (b) 14.16 (c) 14.06 (d) 14.26

Answer key

  1. 6
  2. 13.92
  3. 10.98
  4. 0.072
  5. 70
  6. 10.89
  7. 70
  8. 0.066
  9. 0.3
  10. 0.24
  11. 0.022
  12. 18.55
  13. 0.8
  14. 0.014
  15. 12.58
  16. 5.77
  17. 9
  18. 0.01
  19. 0.013
  20. 0.6
  21. 10.22
  22. 11.22
  23. 0.23
  24. 0.89
  25. 0.024
  26. 7.33
  27. 3.04
  28. 0.4
  29. 0.36
  30. 17.18
  31. 0.062
  32. 7.67
  33. 0.07
  34. 14.87
  35. 10.93
  36. 0.066
  37. 6.88
  38. 0.019
  39. 0.016
  40. 14.16

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