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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 372 · 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. 1.7.81 + 2.1 = ? (a) 8.02 (b) 9.81 (c) 10.01 (d) 9.91
  2. 2.Which is the smallest: 0.87, 0.8, 0.738, 0.012? (a) 0.87 (b) 0.8 (c) 0.738 (d) 0.012
  3. 3.3.87 + 5.8 = ? (a) 4.45 (b) 9.77 (c) 9.67 (d) 9.57
  4. 4.What is the value of the digit 7 in 69.715? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  5. 5.3.97 + 3.5 = ? (a) 7.47 (b) 7.37 (c) 7.57 (d) 4.32
  6. 6.What is the value of the digit 4 in 48.316? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  7. 7.Which is the smallest: 0.067, 0.153, 0.23, 0.2? (a) 0.067 (b) 0.153 (c) 0.23 (d) 0.2
  8. 8.6.22 + 9.1 = ? (a) 15.32 (b) 15.42 (c) 15.22 (d) 7.13
  9. 9.What is the value of the digit 5 in 95.426? (a) 0.05 (b) 50 (c) 5 (d) 0.5
  10. 10.Which is the greatest: 0.79, 0.7, 0.072, 0.696? (a) 0.79 (b) 0.7 (c) 0.072 (d) 0.696
  11. 11.Which is the smallest: 0.83, 0.096, 0.792, 0.8? (a) 0.83 (b) 0.096 (c) 0.792 (d) 0.8
  12. 12.8.71 + 5.1 = ? (a) 13.91 (b) 9.22 (c) 13.81 (d) 13.71
  13. 13.Which is the smallest: 0.121, 0.21, 0.067, 0.2? (a) 0.121 (b) 0.21 (c) 0.067 (d) 0.2
  14. 14.2.72 + 1.1 = ? (a) 3.72 (b) 2.83 (c) 3.92 (d) 3.82
  15. 15.9.41 + 1.5 = ? (a) 11.01 (b) 10.91 (c) 9.56 (d) 10.81
  16. 16.2.66 + 2.1 = ? (a) 2.87 (b) 4.86 (c) 4.66 (d) 4.76
  17. 17.Which is the smallest: 0.2, 0.25, 0.081, 0.194? (a) 0.2 (b) 0.25 (c) 0.081 (d) 0.194
  18. 18.6.34 + 6.6 = ? (a) 13.04 (b) 7 (c) 12.94 (d) 12.84
  19. 19.3.54 + 2.5 = ? (a) 5.94 (b) 3.79 (c) 6.14 (d) 6.04
  20. 20.Which is the greatest: 0.078, 0.45, 0.365, 0.4? (a) 0.078 (b) 0.45 (c) 0.365 (d) 0.4
  21. 21.Which is the smallest: 0.166, 0.27, 0.079, 0.2? (a) 0.166 (b) 0.27 (c) 0.079 (d) 0.2
  22. 22.6.11 + 4.3 = ? (a) 10.31 (b) 6.54 (c) 10.51 (d) 10.41
  23. 23.Which is the greatest: 0.41, 0.054, 0.317, 0.4? (a) 0.41 (b) 0.054 (c) 0.317 (d) 0.4
  24. 24.What is the value of the digit 9 in 19.762? (a) 0.09 (b) 9 (c) 90 (d) 0.9
  25. 25.4.41 + 1.3 = ? (a) 5.71 (b) 5.81 (c) 5.61 (d) 4.54
  26. 26.Which is the smallest: 0.86, 0.712, 0.014, 0.8? (a) 0.86 (b) 0.712 (c) 0.014 (d) 0.8
  27. 27.Which is the smallest: 0.736, 0.82, 0.071, 0.8? (a) 0.736 (b) 0.82 (c) 0.071 (d) 0.8
  28. 28.What is the value of the digit 6 in 69.784? (a) 6 (b) 0.06 (c) 60 (d) 0.6
  29. 29.2.59 + 4.1 = ? (a) 6.59 (b) 6.69 (c) 6.79 (d) 3
  30. 30.3.82 + 7.7 = ? (a) 11.62 (b) 11.42 (c) 11.52 (d) 4.59
  31. 31.What is the value of the digit 6 in 81.964? (a) 0.6 (b) 6 (c) 0.06 (d) 0.006
  32. 32.What is the value of the digit 4 in 47.586? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  33. 33.3.47 + 9.6 = ? (a) 13.17 (b) 12.97 (c) 13.07 (d) 4.43
  34. 34.7.94 + 9.5 = ? (a) 17.34 (b) 8.89 (c) 17.44 (d) 17.54
  35. 35.Which is the smallest: 0.2, 0.23, 0.154, 0.045? (a) 0.2 (b) 0.23 (c) 0.154 (d) 0.045
  36. 36.Which is the greatest: 0.612, 0.7, 0.72, 0.069? (a) 0.612 (b) 0.7 (c) 0.72 (d) 0.069
  37. 37.Which is the smallest: 0.48, 0.329, 0.076, 0.4? (a) 0.48 (b) 0.329 (c) 0.076 (d) 0.4
  38. 38.What is the value of the digit 6 in 96.582? (a) 0.6 (b) 0.06 (c) 60 (d) 6
  39. 39.7.64 + 3.5 = ? (a) 11.04 (b) 11.24 (c) 11.14 (d) 7.99
  40. 40.What is the value of the digit 5 in 83.259? (a) 5 (b) 0.005 (c) 0.5 (d) 0.05

Answer key

  1. 9.91
  2. 0.012
  3. 9.67
  4. 0.7
  5. 7.47
  6. 40
  7. 0.067
  8. 15.32
  9. 5
  10. 0.79
  11. 0.096
  12. 13.81
  13. 0.067
  14. 3.82
  15. 10.91
  16. 4.76
  17. 0.081
  18. 12.94
  19. 6.04
  20. 0.45
  21. 0.079
  22. 10.41
  23. 0.41
  24. 9
  25. 5.71
  26. 0.014
  27. 0.071
  28. 60
  29. 6.69
  30. 11.52
  31. 0.06
  32. 40
  33. 13.07
  34. 17.44
  35. 0.045
  36. 0.72
  37. 0.076
  38. 6
  39. 11.14
  40. 0.05

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