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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 226 · 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: 0.5, 0.56, 0.047, 0.458? (a) 0.5 (b) 0.56 (c) 0.047 (d) 0.458
  2. 2.5.27 + 7.3 = ? (a) 12.47 (b) 6 (c) 12.57 (d) 12.67
  3. 3.8.72 + 3.9 = ? (a) 12.52 (b) 12.72 (c) 9.11 (d) 12.62
  4. 4.3.09 + 8.3 = ? (a) 11.29 (b) 11.39 (c) 11.49 (d) 3.92
  5. 5.What is the value of the digit 5 in 42.165? (a) 0.005 (b) 5 (c) 0.5 (d) 0.05
  6. 6.Which is the greatest: 0.422, 0.53, 0.5, 0.044? (a) 0.422 (b) 0.53 (c) 0.5 (d) 0.044
  7. 7.Which is the smallest: 0.34, 0.021, 0.3, 0.218? (a) 0.34 (b) 0.021 (c) 0.3 (d) 0.218
  8. 8.4.42 + 1.3 = ? (a) 4.55 (b) 5.62 (c) 5.82 (d) 5.72
  9. 9.7.17 + 1.9 = ? (a) 8.97 (b) 9.07 (c) 9.17 (d) 7.36
  10. 10.Which is the greatest: 0.81, 0.721, 0.012, 0.8? (a) 0.81 (b) 0.721 (c) 0.012 (d) 0.8
  11. 11.What is the value of the digit 3 in 19.635? (a) 0.03 (b) 3 (c) 0.003 (d) 0.3
  12. 12.3.67 + 2.3 = ? (a) 5.97 (b) 3.9 (c) 6.07 (d) 5.87
  13. 13.Which is the smallest: 0.584, 0.014, 0.69, 0.6? (a) 0.584 (b) 0.014 (c) 0.69 (d) 0.6
  14. 14.Which is the smallest: 0.123, 0.22, 0.2, 0.062? (a) 0.123 (b) 0.22 (c) 0.2 (d) 0.062
  15. 15.9.98 + 5.4 = ? (a) 15.48 (b) 10.52 (c) 15.38 (d) 15.28
  16. 16.What is the value of the digit 8 in 58.641? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  17. 17.3.99 + 8.9 = ? (a) 12.99 (b) 12.89 (c) 4.88 (d) 12.79
  18. 18.Which is the greatest: 0.86, 0.772, 0.8, 0.062? (a) 0.86 (b) 0.772 (c) 0.8 (d) 0.062
  19. 19.Which is the greatest: 0.82, 0.8, 0.018, 0.796? (a) 0.82 (b) 0.8 (c) 0.018 (d) 0.796
  20. 20.What is the value of the digit 5 in 14.875? (a) 0.005 (b) 0.05 (c) 0.5 (d) 5
  21. 21.Which is the greatest: 0.66, 0.052, 0.591, 0.6? (a) 0.66 (b) 0.052 (c) 0.591 (d) 0.6
  22. 22.1.51 + 4.3 = ? (a) 5.71 (b) 1.94 (c) 5.81 (d) 5.91
  23. 23.What is the value of the digit 4 in 74.123? (a) 0.04 (b) 40 (c) 0.4 (d) 4
  24. 24.5.95 + 2.9 = ? (a) 8.95 (b) 6.24 (c) 8.85 (d) 8.75
  25. 25.Which is the greatest: 0.489, 0.048, 0.56, 0.5? (a) 0.489 (b) 0.048 (c) 0.56 (d) 0.5
  26. 26.What is the value of the digit 7 in 14.792? (a) 0.07 (b) 7 (c) 0.007 (d) 0.7
  27. 27.What is the value of the digit 8 in 48.572? (a) 8 (b) 80 (c) 0.8 (d) 0.08
  28. 28.8.35 + 2.7 = ? (a) 8.62 (b) 10.95 (c) 11.05 (d) 11.15
  29. 29.What is the value of the digit 8 in 12.983? (a) 0.8 (b) 0.08 (c) 8 (d) 0.008
  30. 30.9.12 + 3.1 = ? (a) 9.43 (b) 12.12 (c) 12.22 (d) 12.32
  31. 31.What is the value of the digit 9 in 21.394? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  32. 32.What is the value of the digit 4 in 46.987? (a) 0.4 (b) 0.04 (c) 40 (d) 4
  33. 33.1.65 + 8.4 = ? (a) 2.49 (b) 9.95 (c) 10.15 (d) 10.05
  34. 34.Which is the smallest: 0.86, 0.8, 0.751, 0.041? (a) 0.86 (b) 0.8 (c) 0.751 (d) 0.041
  35. 35.Which is the greatest: 0.71, 0.698, 0.7, 0.078? (a) 0.71 (b) 0.698 (c) 0.7 (d) 0.078
  36. 36.Which is the smallest: 0.784, 0.036, 0.8, 0.87? (a) 0.784 (b) 0.036 (c) 0.8 (d) 0.87
  37. 37.What is the value of the digit 5 in 92.356? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  38. 38.Which is the greatest: 0.413, 0.019, 0.5, 0.55? (a) 0.413 (b) 0.019 (c) 0.5 (d) 0.55
  39. 39.7.48 + 4.1 = ? (a) 7.89 (b) 11.68 (c) 11.58 (d) 11.48
  40. 40.Which is the greatest: 0.053, 0.566, 0.6, 0.64? (a) 0.053 (b) 0.566 (c) 0.6 (d) 0.64

Answer key

  1. 0.56
  2. 12.57
  3. 12.62
  4. 11.39
  5. 0.005
  6. 0.53
  7. 0.021
  8. 5.72
  9. 9.07
  10. 0.81
  11. 0.03
  12. 5.97
  13. 0.014
  14. 0.062
  15. 15.38
  16. 8
  17. 12.89
  18. 0.86
  19. 0.82
  20. 0.005
  21. 0.66
  22. 5.81
  23. 4
  24. 8.85
  25. 0.56
  26. 0.7
  27. 8
  28. 11.05
  29. 0.08
  30. 12.22
  31. 0.09
  32. 40
  33. 10.05
  34. 0.041
  35. 0.71
  36. 0.036
  37. 0.05
  38. 0.55
  39. 11.58
  40. 0.64

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