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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 671 · 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. 1.5.07 + 6.6 = ? (a) 11.57 (b) 11.77 (c) 5.73 (d) 11.67
  2. 2.Which is the greatest: 0.053, 0.8, 0.81, 0.754? (a) 0.053 (b) 0.8 (c) 0.81 (d) 0.754
  3. 3.Which is the smallest: 0.066, 0.558, 0.69, 0.6? (a) 0.066 (b) 0.558 (c) 0.69 (d) 0.6
  4. 4.Which is the smallest: 0.094, 0.72, 0.7, 0.618? (a) 0.094 (b) 0.72 (c) 0.7 (d) 0.618
  5. 5.Which is the greatest: 0.75, 0.655, 0.7, 0.078? (a) 0.75 (b) 0.655 (c) 0.7 (d) 0.078
  6. 6.3.19 + 9.3 = ? (a) 4.12 (b) 12.39 (c) 12.59 (d) 12.49
  7. 7.Which is the greatest: 0.092, 0.3, 0.255, 0.36? (a) 0.092 (b) 0.3 (c) 0.255 (d) 0.36
  8. 8.Which is the smallest: 0.642, 0.75, 0.066, 0.7? (a) 0.642 (b) 0.75 (c) 0.066 (d) 0.7
  9. 9.Which is the smallest: 0.012, 0.121, 0.2, 0.29? (a) 0.012 (b) 0.121 (c) 0.2 (d) 0.29
  10. 10.7.93 + 5.1 = ? (a) 8.44 (b) 13.03 (c) 13.13 (d) 12.93
  11. 11.What is the value of the digit 4 in 74.596? (a) 0.4 (b) 0.04 (c) 40 (d) 4
  12. 12.8.98 + 7.6 = ? (a) 16.58 (b) 9.74 (c) 16.48 (d) 16.68
  13. 13.What is the value of the digit 7 in 32.784? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  14. 14.Which is the greatest: 0.091, 0.484, 0.59, 0.5? (a) 0.091 (b) 0.484 (c) 0.59 (d) 0.5
  15. 15.What is the value of the digit 9 in 15.349? (a) 0.09 (b) 0.9 (c) 0.009 (d) 9
  16. 16.Which is the smallest: 0.053, 0.564, 0.66, 0.6? (a) 0.053 (b) 0.564 (c) 0.66 (d) 0.6
  17. 17.Which is the smallest: 0.283, 0.012, 0.37, 0.3? (a) 0.283 (b) 0.012 (c) 0.37 (d) 0.3
  18. 18.Which is the greatest: 0.014, 0.345, 0.4, 0.46? (a) 0.014 (b) 0.345 (c) 0.4 (d) 0.46
  19. 19.What is the value of the digit 2 in 81.297? (a) 0.2 (b) 0.02 (c) 2 (d) 0.002
  20. 20.What is the value of the digit 3 in 34.968? (a) 3 (b) 0.03 (c) 30 (d) 0.3
  21. 21.What is the value of the digit 3 in 39.416? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  22. 22.Which is the smallest: 0.5, 0.56, 0.481, 0.043? (a) 0.5 (b) 0.56 (c) 0.481 (d) 0.043
  23. 23.4.08 + 5.6 = ? (a) 4.64 (b) 9.58 (c) 9.68 (d) 9.78
  24. 24.Which is the smallest: 0.722, 0.83, 0.8, 0.043? (a) 0.722 (b) 0.83 (c) 0.8 (d) 0.043
  25. 25.8.25 + 8.1 = ? (a) 16.45 (b) 9.06 (c) 16.25 (d) 16.35
  26. 26.What is the value of the digit 7 in 27.315? (a) 7 (b) 70 (c) 0.7 (d) 0.07
  27. 27.Which is the smallest: 0.126, 0.27, 0.053, 0.2? (a) 0.126 (b) 0.27 (c) 0.053 (d) 0.2
  28. 28.6.75 + 8.1 = ? (a) 14.85 (b) 14.75 (c) 14.95 (d) 7.56
  29. 29.3.34 + 1.9 = ? (a) 5.14 (b) 5.24 (c) 3.53 (d) 5.34
  30. 30.Which is the smallest: 0.713, 0.054, 0.8, 0.84? (a) 0.713 (b) 0.054 (c) 0.8 (d) 0.84
  31. 31.1.13 + 1.3 = ? (a) 2.33 (b) 2.43 (c) 1.26 (d) 2.53
  32. 32.What is the value of the digit 4 in 34.652? (a) 0.04 (b) 0.4 (c) 4 (d) 40
  33. 33.8.86 + 9.5 = ? (a) 9.81 (b) 18.26 (c) 18.46 (d) 18.36
  34. 34.3.41 + 5.2 = ? (a) 8.51 (b) 8.71 (c) 3.93 (d) 8.61
  35. 35.2.76 + 2.6 = ? (a) 5.26 (b) 3.02 (c) 5.36 (d) 5.46
  36. 36.5.67 + 5.7 = ? (a) 11.37 (b) 11.47 (c) 6.24 (d) 11.27
  37. 37.3.43 + 6.2 = ? (a) 9.73 (b) 9.53 (c) 9.63 (d) 4.05
  38. 38.What is the value of the digit 5 in 78.495? (a) 5 (b) 0.5 (c) 0.005 (d) 0.05
  39. 39.What is the value of the digit 9 in 43.689? (a) 9 (b) 0.009 (c) 0.09 (d) 0.9
  40. 40.Which is the smallest: 0.318, 0.4, 0.085, 0.41? (a) 0.318 (b) 0.4 (c) 0.085 (d) 0.41

Answer key

  1. 11.67
  2. 0.81
  3. 0.066
  4. 0.094
  5. 0.75
  6. 12.49
  7. 0.36
  8. 0.066
  9. 0.012
  10. 13.03
  11. 4
  12. 16.58
  13. 0.7
  14. 0.59
  15. 0.009
  16. 0.053
  17. 0.012
  18. 0.46
  19. 0.2
  20. 30
  21. 30
  22. 0.043
  23. 9.68
  24. 0.043
  25. 16.35
  26. 7
  27. 0.053
  28. 14.85
  29. 5.24
  30. 0.054
  31. 2.43
  32. 4
  33. 18.36
  34. 8.61
  35. 5.36
  36. 11.37
  37. 9.63
  38. 0.005
  39. 0.009
  40. 0.085

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