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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 256 · 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. 1.3.12 + 9.3 = ? (a) 12.32 (b) 4.05 (c) 12.52 (d) 12.42
  2. 2.What is the value of the digit 1 in 32.175? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  3. 3.2.67 + 2.2 = ? (a) 4.77 (b) 4.97 (c) 4.87 (d) 2.89
  4. 4.What is the value of the digit 3 in 54.923? (a) 0.3 (b) 3 (c) 0.03 (d) 0.003
  5. 5.What is the value of the digit 7 in 62.759? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  6. 6.What is the value of the digit 6 in 63.921? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  7. 7.3.77 + 2.2 = ? (a) 6.07 (b) 5.87 (c) 3.99 (d) 5.97
  8. 8.What is the value of the digit 7 in 14.678? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  9. 9.Which is the smallest: 0.042, 0.293, 0.3, 0.31? (a) 0.042 (b) 0.293 (c) 0.3 (d) 0.31
  10. 10.9.22 + 6.3 = ? (a) 15.62 (b) 15.42 (c) 9.85 (d) 15.52
  11. 11.9.76 + 4.6 = ? (a) 10.22 (b) 14.46 (c) 14.36 (d) 14.26
  12. 12.2.97 + 3.1 = ? (a) 6.07 (b) 3.28 (c) 6.17 (d) 5.97
  13. 13.What is the value of the digit 8 in 52.389? (a) 0.8 (b) 0.008 (c) 0.08 (d) 8
  14. 14.Which is the greatest: 0.2, 0.29, 0.085, 0.159? (a) 0.2 (b) 0.29 (c) 0.085 (d) 0.159
  15. 15.What is the value of the digit 6 in 74.561? (a) 0.6 (b) 0.06 (c) 6 (d) 0.006
  16. 16.Which is the greatest: 0.8, 0.079, 0.85, 0.727? (a) 0.8 (b) 0.079 (c) 0.85 (d) 0.727
  17. 17.5.32 + 2.5 = ? (a) 7.72 (b) 7.82 (c) 5.57 (d) 7.92
  18. 18.Which is the smallest: 0.379, 0.013, 0.41, 0.4? (a) 0.379 (b) 0.013 (c) 0.41 (d) 0.4
  19. 19.7.24 + 9.5 = ? (a) 16.84 (b) 8.19 (c) 16.74 (d) 16.64
  20. 20.9.99 + 7.9 = ? (a) 10.78 (b) 17.79 (c) 17.89 (d) 17.99
  21. 21.6.14 + 7.9 = ? (a) 13.94 (b) 14.14 (c) 6.93 (d) 14.04
  22. 22.Which is the greatest: 0.012, 0.2, 0.28, 0.121? (a) 0.012 (b) 0.2 (c) 0.28 (d) 0.121
  23. 23.Which is the greatest: 0.67, 0.6, 0.564, 0.019? (a) 0.67 (b) 0.6 (c) 0.564 (d) 0.019
  24. 24.Which is the smallest: 0.017, 0.763, 0.8, 0.87? (a) 0.017 (b) 0.763 (c) 0.8 (d) 0.87
  25. 25.What is the value of the digit 3 in 96.453? (a) 0.03 (b) 0.3 (c) 3 (d) 0.003
  26. 26.Which is the smallest: 0.59, 0.462, 0.5, 0.065? (a) 0.59 (b) 0.462 (c) 0.5 (d) 0.065
  27. 27.What is the value of the digit 7 in 78.692? (a) 0.7 (b) 7 (c) 70 (d) 0.07
  28. 28.1.73 + 3.9 = ? (a) 5.53 (b) 2.12 (c) 5.63 (d) 5.73
  29. 29.Which is the greatest: 0.4, 0.316, 0.46, 0.064? (a) 0.4 (b) 0.316 (c) 0.46 (d) 0.064
  30. 30.2.79 + 7.5 = ? (a) 10.29 (b) 3.54 (c) 10.39 (d) 10.19
  31. 31.Which is the smallest: 0.413, 0.56, 0.046, 0.5? (a) 0.413 (b) 0.56 (c) 0.046 (d) 0.5
  32. 32.9.71 + 1.2 = ? (a) 10.81 (b) 9.83 (c) 10.91 (d) 11.01
  33. 33.What is the value of the digit 6 in 78.624? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  34. 34.2.41 + 9.6 = ? (a) 12.01 (b) 12.11 (c) 11.91 (d) 3.37
  35. 35.Which is the greatest: 0.756, 0.86, 0.8, 0.028? (a) 0.756 (b) 0.86 (c) 0.8 (d) 0.028
  36. 36.What is the value of the digit 6 in 71.563? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  37. 37.What is the value of the digit 2 in 93.428? (a) 2 (b) 0.002 (c) 0.2 (d) 0.02
  38. 38.4.29 + 9.3 = ? (a) 13.49 (b) 5.22 (c) 13.69 (d) 13.59
  39. 39.What is the value of the digit 3 in 63.814? (a) 0.3 (b) 3 (c) 0.03 (d) 30
  40. 40.1.26 + 4.3 = ? (a) 5.56 (b) 5.46 (c) 5.66 (d) 1.69

Answer key

  1. 12.42
  2. 0.1
  3. 4.87
  4. 0.003
  5. 0.7
  6. 60
  7. 5.97
  8. 0.07
  9. 0.042
  10. 15.52
  11. 14.36
  12. 6.07
  13. 0.08
  14. 0.29
  15. 0.06
  16. 0.85
  17. 7.82
  18. 0.013
  19. 16.74
  20. 17.89
  21. 14.04
  22. 0.28
  23. 0.67
  24. 0.017
  25. 0.003
  26. 0.065
  27. 70
  28. 5.63
  29. 0.46
  30. 10.29
  31. 0.046
  32. 10.91
  33. 0.6
  34. 12.01
  35. 0.86
  36. 0.06
  37. 0.02
  38. 13.59
  39. 3
  40. 5.56

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