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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 321 · 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. 1.3.18 + 2.4 = ? (a) 5.48 (b) 3.42 (c) 5.68 (d) 5.58
  2. 2.1.41 + 3.8 = ? (a) 1.79 (b) 5.31 (c) 5.11 (d) 5.21
  3. 3.What is the value of the digit 7 in 51.674? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  4. 4.Which is the greatest: 0.82, 0.757, 0.012, 0.8? (a) 0.82 (b) 0.757 (c) 0.012 (d) 0.8
  5. 5.1.62 + 1.2 = ? (a) 1.74 (b) 2.82 (c) 2.92 (d) 2.72
  6. 6.5.15 + 6.1 = ? (a) 5.76 (b) 11.15 (c) 11.35 (d) 11.25
  7. 7.What is the value of the digit 5 in 83.596? (a) 5 (b) 0.05 (c) 0.005 (d) 0.5
  8. 8.What is the value of the digit 1 in 16.934? (a) 0.1 (b) 10 (c) 1 (d) 0.01
  9. 9.3.38 + 6.8 = ? (a) 10.08 (b) 10.28 (c) 10.18 (d) 4.06
  10. 10.What is the value of the digit 9 in 19.537? (a) 0.9 (b) 90 (c) 0.09 (d) 9
  11. 11.Which is the greatest: 0.478, 0.018, 0.5, 0.52? (a) 0.478 (b) 0.018 (c) 0.5 (d) 0.52
  12. 12.What is the value of the digit 1 in 75.821? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  13. 13.What is the value of the digit 7 in 43.765? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  14. 14.Which is the greatest: 0.477, 0.57, 0.5, 0.048? (a) 0.477 (b) 0.57 (c) 0.5 (d) 0.048
  15. 15.9.16 + 8.9 = ? (a) 18.06 (b) 17.96 (c) 10.05 (d) 18.16
  16. 16.What is the value of the digit 5 in 52.697? (a) 5 (b) 0.5 (c) 0.05 (d) 50
  17. 17.What is the value of the digit 5 in 27.165? (a) 0.5 (b) 0.005 (c) 5 (d) 0.05
  18. 18.2.96 + 4.7 = ? (a) 7.56 (b) 7.66 (c) 3.43 (d) 7.76
  19. 19.8.61 + 9.7 = ? (a) 18.41 (b) 18.21 (c) 9.58 (d) 18.31
  20. 20.1.47 + 3.1 = ? (a) 1.78 (b) 4.67 (c) 4.47 (d) 4.57
  21. 21.What is the value of the digit 2 in 21.754? (a) 2 (b) 0.2 (c) 20 (d) 0.02
  22. 22.1.45 + 6.9 = ? (a) 8.25 (b) 2.14 (c) 8.35 (d) 8.45
  23. 23.What is the value of the digit 8 in 25.718? (a) 0.008 (b) 0.08 (c) 8 (d) 0.8
  24. 24.Which is the greatest: 0.042, 0.457, 0.5, 0.51? (a) 0.042 (b) 0.457 (c) 0.5 (d) 0.51
  25. 25.Which is the smallest: 0.479, 0.042, 0.5, 0.56? (a) 0.479 (b) 0.042 (c) 0.5 (d) 0.56
  26. 26.What is the value of the digit 3 in 13.279? (a) 30 (b) 3 (c) 0.3 (d) 0.03
  27. 27.Which is the greatest: 0.385, 0.093, 0.4, 0.41? (a) 0.385 (b) 0.093 (c) 0.4 (d) 0.41
  28. 28.Which is the smallest: 0.384, 0.45, 0.058, 0.4? (a) 0.384 (b) 0.45 (c) 0.058 (d) 0.4
  29. 29.What is the value of the digit 5 in 51.963? (a) 0.5 (b) 5 (c) 0.05 (d) 50
  30. 30.What is the value of the digit 9 in 49.628? (a) 90 (b) 0.09 (c) 0.9 (d) 9
  31. 31.4.81 + 2.8 = ? (a) 7.61 (b) 5.09 (c) 7.51 (d) 7.71
  32. 32.What is the value of the digit 6 in 46.931? (a) 60 (b) 0.6 (c) 6 (d) 0.06
  33. 33.What is the value of the digit 3 in 13.456? (a) 0.03 (b) 30 (c) 0.3 (d) 3
  34. 34.What is the value of the digit 9 in 51.946? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  35. 35.Which is the smallest: 0.32, 0.3, 0.071, 0.283? (a) 0.32 (b) 0.3 (c) 0.071 (d) 0.283
  36. 36.Which is the smallest: 0.122, 0.23, 0.2, 0.036? (a) 0.122 (b) 0.23 (c) 0.2 (d) 0.036
  37. 37.What is the value of the digit 8 in 86.714? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  38. 38.What is the value of the digit 4 in 45.267? (a) 0.4 (b) 40 (c) 0.04 (d) 4
  39. 39.Which is the smallest: 0.7, 0.088, 0.663, 0.77? (a) 0.7 (b) 0.088 (c) 0.663 (d) 0.77
  40. 40.6.39 + 1.3 = ? (a) 7.59 (b) 6.52 (c) 7.79 (d) 7.69

Answer key

  1. 5.58
  2. 5.21
  3. 0.07
  4. 0.82
  5. 2.82
  6. 11.25
  7. 0.5
  8. 10
  9. 10.18
  10. 9
  11. 0.52
  12. 0.001
  13. 0.7
  14. 0.57
  15. 18.06
  16. 50
  17. 0.005
  18. 7.66
  19. 18.31
  20. 4.57
  21. 20
  22. 8.35
  23. 0.008
  24. 0.51
  25. 0.042
  26. 3
  27. 0.41
  28. 0.058
  29. 50
  30. 9
  31. 7.61
  32. 6
  33. 3
  34. 0.9
  35. 0.071
  36. 0.036
  37. 80
  38. 40
  39. 0.088
  40. 7.69

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