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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 87 · 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.What is the value of the digit 9 in 38.945? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  2. 2.2.81 + 1.9 = ? (a) 4.61 (b) 4.71 (c) 3 (d) 4.81
  3. 3.6.31 + 6.5 = ? (a) 12.71 (b) 12.91 (c) 6.96 (d) 12.81
  4. 4.1.08 + 4.6 = ? (a) 5.58 (b) 1.54 (c) 5.78 (d) 5.68
  5. 5.What is the value of the digit 5 in 83.245? (a) 0.05 (b) 0.5 (c) 5 (d) 0.005
  6. 6.Which is the greatest: 0.3, 0.214, 0.32, 0.022? (a) 0.3 (b) 0.214 (c) 0.32 (d) 0.022
  7. 7.Which is the smallest: 0.46, 0.4, 0.352, 0.063? (a) 0.46 (b) 0.4 (c) 0.352 (d) 0.063
  8. 8.Which is the greatest: 0.5, 0.011, 0.429, 0.56? (a) 0.5 (b) 0.011 (c) 0.429 (d) 0.56
  9. 9.9.64 + 3.4 = ? (a) 13.14 (b) 12.94 (c) 13.04 (d) 9.98
  10. 10.What is the value of the digit 7 in 54.378? (a) 7 (b) 0.7 (c) 0.07 (d) 0.007
  11. 11.6.81 + 9.3 = ? (a) 7.74 (b) 16.21 (c) 16.01 (d) 16.11
  12. 12.3.55 + 5.8 = ? (a) 4.13 (b) 9.45 (c) 9.25 (d) 9.35
  13. 13.What is the value of the digit 2 in 34.125? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  14. 14.What is the value of the digit 7 in 67.145? (a) 70 (b) 0.07 (c) 0.7 (d) 7
  15. 15.3.82 + 8.9 = ? (a) 12.82 (b) 12.72 (c) 4.71 (d) 12.62
  16. 16.Which is the smallest: 0.451, 0.044, 0.51, 0.5? (a) 0.451 (b) 0.044 (c) 0.51 (d) 0.5
  17. 17.What is the value of the digit 9 in 16.479? (a) 0.9 (b) 9 (c) 0.09 (d) 0.009
  18. 18.Which is the greatest: 0.572, 0.65, 0.099, 0.6? (a) 0.572 (b) 0.65 (c) 0.099 (d) 0.6
  19. 19.3.95 + 3.9 = ? (a) 7.95 (b) 4.34 (c) 7.75 (d) 7.85
  20. 20.Which is the smallest: 0.071, 0.435, 0.5, 0.51? (a) 0.071 (b) 0.435 (c) 0.5 (d) 0.51
  21. 21.Which is the smallest: 0.329, 0.46, 0.4, 0.024? (a) 0.329 (b) 0.46 (c) 0.4 (d) 0.024
  22. 22.What is the value of the digit 9 in 81.695? (a) 0.009 (b) 0.09 (c) 0.9 (d) 9
  23. 23.9.87 + 5.4 = ? (a) 15.27 (b) 15.17 (c) 15.37 (d) 10.41
  24. 24.7.83 + 8.3 = ? (a) 16.23 (b) 16.03 (c) 8.66 (d) 16.13
  25. 25.What is the value of the digit 2 in 31.426? (a) 0.2 (b) 0.002 (c) 2 (d) 0.02
  26. 26.Which is the smallest: 0.381, 0.039, 0.45, 0.4? (a) 0.381 (b) 0.039 (c) 0.45 (d) 0.4
  27. 27.What is the value of the digit 7 in 43.578? (a) 0.7 (b) 0.07 (c) 7 (d) 0.007
  28. 28.What is the value of the digit 2 in 27.531? (a) 20 (b) 0.02 (c) 2 (d) 0.2
  29. 29.Which is the greatest: 0.028, 0.37, 0.3, 0.285? (a) 0.028 (b) 0.37 (c) 0.3 (d) 0.285
  30. 30.What is the value of the digit 2 in 21.856? (a) 2 (b) 0.02 (c) 20 (d) 0.2
  31. 31.Which is the smallest: 0.541, 0.6, 0.69, 0.013? (a) 0.541 (b) 0.6 (c) 0.69 (d) 0.013
  32. 32.9.84 + 1.5 = ? (a) 11.44 (b) 11.34 (c) 11.24 (d) 9.99
  33. 33.Which is the greatest: 0.7, 0.061, 0.685, 0.79? (a) 0.7 (b) 0.061 (c) 0.685 (d) 0.79
  34. 34.What is the value of the digit 3 in 31.584? (a) 3 (b) 0.03 (c) 0.3 (d) 30
  35. 35.Which is the smallest: 0.086, 0.32, 0.3, 0.215? (a) 0.086 (b) 0.32 (c) 0.3 (d) 0.215
  36. 36.4.85 + 6.1 = ? (a) 5.46 (b) 10.95 (c) 10.85 (d) 11.05
  37. 37.9.01 + 5.5 = ? (a) 14.51 (b) 14.61 (c) 14.41 (d) 9.56
  38. 38.Which is the greatest: 0.3, 0.37, 0.221, 0.026? (a) 0.3 (b) 0.37 (c) 0.221 (d) 0.026
  39. 39.Which is the greatest: 0.2, 0.29, 0.026, 0.193? (a) 0.2 (b) 0.29 (c) 0.026 (d) 0.193
  40. 40.2.91 + 8.2 = ? (a) 3.73 (b) 11.21 (c) 11.11 (d) 11.01

Answer key

  1. 0.9
  2. 4.71
  3. 12.81
  4. 5.68
  5. 0.005
  6. 0.32
  7. 0.063
  8. 0.56
  9. 13.04
  10. 0.07
  11. 16.11
  12. 9.35
  13. 0.02
  14. 7
  15. 12.72
  16. 0.044
  17. 0.009
  18. 0.65
  19. 7.85
  20. 0.071
  21. 0.024
  22. 0.09
  23. 15.27
  24. 16.13
  25. 0.02
  26. 0.039
  27. 0.07
  28. 20
  29. 0.37
  30. 20
  31. 0.013
  32. 11.34
  33. 0.79
  34. 30
  35. 0.086
  36. 10.95
  37. 14.51
  38. 0.37
  39. 0.29
  40. 11.11

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