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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 60 · 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. 1.3.31 + 1.9 = ? (a) 5.11 (b) 5.31 (c) 5.21 (d) 3.5
  2. 2.7.67 + 8.5 = ? (a) 16.17 (b) 16.07 (c) 16.27 (d) 8.52
  3. 3.Which is the greatest: 0.432, 0.53, 0.096, 0.5? (a) 0.432 (b) 0.53 (c) 0.096 (d) 0.5
  4. 4.What is the value of the digit 7 in 51.784? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7
  5. 5.Which is the greatest: 0.8, 0.033, 0.719, 0.81? (a) 0.8 (b) 0.033 (c) 0.719 (d) 0.81
  6. 6.8.77 + 9.9 = ? (a) 18.77 (b) 18.57 (c) 9.76 (d) 18.67
  7. 7.8.31 + 5.5 = ? (a) 13.91 (b) 13.71 (c) 8.86 (d) 13.81
  8. 8.Which is the smallest: 0.275, 0.37, 0.084, 0.3? (a) 0.275 (b) 0.37 (c) 0.084 (d) 0.3
  9. 9.Which is the smallest: 0.022, 0.24, 0.149, 0.2? (a) 0.022 (b) 0.24 (c) 0.149 (d) 0.2
  10. 10.6.89 + 2.9 = ? (a) 9.89 (b) 9.79 (c) 7.18 (d) 9.69
  11. 11.Which is the smallest: 0.141, 0.058, 0.2, 0.25? (a) 0.141 (b) 0.058 (c) 0.2 (d) 0.25
  12. 12.Which is the smallest: 0.27, 0.182, 0.2, 0.057? (a) 0.27 (b) 0.182 (c) 0.2 (d) 0.057
  13. 13.1.88 + 7.1 = ? (a) 8.88 (b) 2.59 (c) 9.08 (d) 8.98
  14. 14.6.48 + 6.1 = ? (a) 12.48 (b) 7.09 (c) 12.58 (d) 12.68
  15. 15.7.67 + 9.1 = ? (a) 8.58 (b) 16.87 (c) 16.77 (d) 16.67
  16. 16.9.14 + 9.6 = ? (a) 18.64 (b) 18.84 (c) 10.1 (d) 18.74
  17. 17.4.19 + 8.6 = ? (a) 12.89 (b) 5.05 (c) 12.69 (d) 12.79
  18. 18.Which is the greatest: 0.024, 0.3, 0.39, 0.218? (a) 0.024 (b) 0.3 (c) 0.39 (d) 0.218
  19. 19.What is the value of the digit 9 in 39.716? (a) 9 (b) 0.09 (c) 0.9 (d) 90
  20. 20.4.73 + 3.1 = ? (a) 7.73 (b) 5.04 (c) 7.83 (d) 7.93
  21. 21.What is the value of the digit 3 in 39.564? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  22. 22.1.55 + 3.9 = ? (a) 5.55 (b) 1.94 (c) 5.35 (d) 5.45
  23. 23.Which is the greatest: 0.7, 0.75, 0.017, 0.675? (a) 0.7 (b) 0.75 (c) 0.017 (d) 0.675
  24. 24.1.92 + 9.2 = ? (a) 11.22 (b) 2.84 (c) 11.12 (d) 11.02
  25. 25.What is the value of the digit 8 in 97.182? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  26. 26.3.79 + 2.2 = ? (a) 6.09 (b) 4.01 (c) 5.89 (d) 5.99
  27. 27.Which is the greatest: 0.86, 0.732, 0.023, 0.8? (a) 0.86 (b) 0.732 (c) 0.023 (d) 0.8
  28. 28.What is the value of the digit 4 in 49.537? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  29. 29.2.23 + 7.6 = ? (a) 2.99 (b) 9.93 (c) 9.73 (d) 9.83
  30. 30.Which is the smallest: 0.33, 0.043, 0.219, 0.3? (a) 0.33 (b) 0.043 (c) 0.219 (d) 0.3
  31. 31.Which is the smallest: 0.2, 0.156, 0.032, 0.26? (a) 0.2 (b) 0.156 (c) 0.032 (d) 0.26
  32. 32.2.37 + 8.7 = ? (a) 11.07 (b) 11.17 (c) 10.97 (d) 3.24
  33. 33.3.39 + 8.6 = ? (a) 11.89 (b) 4.25 (c) 11.99 (d) 12.09
  34. 34.Which is the greatest: 0.454, 0.5, 0.091, 0.58? (a) 0.454 (b) 0.5 (c) 0.091 (d) 0.58
  35. 35.What is the value of the digit 4 in 64.732? (a) 40 (b) 0.04 (c) 4 (d) 0.4
  36. 36.What is the value of the digit 3 in 93.176? (a) 30 (b) 0.03 (c) 3 (d) 0.3
  37. 37.6.86 + 7.3 = ? (a) 14.26 (b) 7.59 (c) 14.16 (d) 14.06
  38. 38.What is the value of the digit 6 in 85.964? (a) 6 (b) 0.006 (c) 0.06 (d) 0.6
  39. 39.What is the value of the digit 2 in 92.583? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  40. 40.What is the value of the digit 1 in 15.397? (a) 1 (b) 0.1 (c) 0.01 (d) 10

Answer key

  1. 5.21
  2. 16.17
  3. 0.53
  4. 0.7
  5. 0.81
  6. 18.67
  7. 13.81
  8. 0.084
  9. 0.022
  10. 9.79
  11. 0.058
  12. 0.057
  13. 8.98
  14. 12.58
  15. 16.77
  16. 18.74
  17. 12.79
  18. 0.39
  19. 9
  20. 7.83
  21. 30
  22. 5.45
  23. 0.75
  24. 11.12
  25. 0.08
  26. 5.99
  27. 0.86
  28. 40
  29. 9.83
  30. 0.043
  31. 0.032
  32. 11.07
  33. 11.99
  34. 0.58
  35. 4
  36. 3
  37. 14.16
  38. 0.06
  39. 2
  40. 10

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