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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 380 · 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. 1.4.74 + 7.6 = ? (a) 12.24 (b) 12.44 (c) 12.34 (d) 5.5
  2. 2.3.21 + 2.3 = ? (a) 5.51 (b) 5.61 (c) 3.44 (d) 5.41
  3. 3.3.91 + 2.8 = ? (a) 4.19 (b) 6.71 (c) 6.81 (d) 6.61
  4. 4.What is the value of the digit 3 in 52.873? (a) 0.03 (b) 0.3 (c) 0.003 (d) 3
  5. 5.9.57 + 2.7 = ? (a) 9.84 (b) 12.27 (c) 12.17 (d) 12.37
  6. 6.What is the value of the digit 2 in 63.942? (a) 0.002 (b) 2 (c) 0.2 (d) 0.02
  7. 7.Which is the greatest: 0.429, 0.5, 0.54, 0.086? (a) 0.429 (b) 0.5 (c) 0.54 (d) 0.086
  8. 8.6.65 + 6.2 = ? (a) 12.75 (b) 7.27 (c) 12.85 (d) 12.95
  9. 9.Which is the greatest: 0.092, 0.59, 0.494, 0.5? (a) 0.092 (b) 0.59 (c) 0.494 (d) 0.5
  10. 10.2.11 + 8.1 = ? (a) 10.31 (b) 10.11 (c) 2.92 (d) 10.21
  11. 11.Which is the greatest: 0.761, 0.8, 0.87, 0.023? (a) 0.761 (b) 0.8 (c) 0.87 (d) 0.023
  12. 12.Which is the greatest: 0.7, 0.685, 0.037, 0.76? (a) 0.7 (b) 0.685 (c) 0.037 (d) 0.76
  13. 13.4.85 + 3.3 = ? (a) 8.25 (b) 5.18 (c) 8.05 (d) 8.15
  14. 14.What is the value of the digit 3 in 82.653? (a) 0.003 (b) 0.03 (c) 3 (d) 0.3
  15. 15.Which is the greatest: 0.6, 0.561, 0.67, 0.036? (a) 0.6 (b) 0.561 (c) 0.67 (d) 0.036
  16. 16.8.17 + 1.6 = ? (a) 8.33 (b) 9.87 (c) 9.67 (d) 9.77
  17. 17.What is the value of the digit 2 in 73.852? (a) 2 (b) 0.002 (c) 0.02 (d) 0.2
  18. 18.Which is the greatest: 0.343, 0.076, 0.44, 0.4? (a) 0.343 (b) 0.076 (c) 0.44 (d) 0.4
  19. 19.7.89 + 6.4 = ? (a) 14.19 (b) 14.29 (c) 14.39 (d) 8.53
  20. 20.3.96 + 4.1 = ? (a) 7.96 (b) 8.16 (c) 4.37 (d) 8.06
  21. 21.What is the value of the digit 2 in 18.723? (a) 2 (b) 0.02 (c) 0.2 (d) 0.002
  22. 22.Which is the smallest: 0.095, 0.2, 0.142, 0.28? (a) 0.095 (b) 0.2 (c) 0.142 (d) 0.28
  23. 23.1.11 + 2.9 = ? (a) 4.11 (b) 1.4 (c) 3.91 (d) 4.01
  24. 24.What is the value of the digit 1 in 87.412? (a) 0.1 (b) 0.01 (c) 0.001 (d) 1
  25. 25.2.76 + 7.2 = ? (a) 9.96 (b) 9.86 (c) 3.48 (d) 10.06
  26. 26.Which is the smallest: 0.025, 0.723, 0.88, 0.8? (a) 0.025 (b) 0.723 (c) 0.88 (d) 0.8
  27. 27.Which is the greatest: 0.45, 0.382, 0.4, 0.027? (a) 0.45 (b) 0.382 (c) 0.4 (d) 0.027
  28. 28.9.58 + 5.9 = ? (a) 15.38 (b) 15.48 (c) 10.17 (d) 15.58
  29. 29.Which is the greatest: 0.78, 0.041, 0.635, 0.7? (a) 0.78 (b) 0.041 (c) 0.635 (d) 0.7
  30. 30.What is the value of the digit 6 in 76.489? (a) 60 (b) 0.06 (c) 0.6 (d) 6
  31. 31.What is the value of the digit 4 in 19.824? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  32. 32.What is the value of the digit 5 in 85.764? (a) 0.5 (b) 50 (c) 0.05 (d) 5
  33. 33.2.22 + 5.7 = ? (a) 2.79 (b) 7.82 (c) 8.02 (d) 7.92
  34. 34.4.51 + 5.6 = ? (a) 5.07 (b) 10.21 (c) 10.11 (d) 10.01
  35. 35.What is the value of the digit 9 in 63.954? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  36. 36.7.51 + 1.6 = ? (a) 9.11 (b) 9.01 (c) 7.67 (d) 9.21
  37. 37.Which is the greatest: 0.3, 0.231, 0.049, 0.39? (a) 0.3 (b) 0.231 (c) 0.049 (d) 0.39
  38. 38.9.41 + 5.3 = ? (a) 14.81 (b) 14.61 (c) 14.71 (d) 9.94
  39. 39.2.22 + 4.8 = ? (a) 7.12 (b) 6.92 (c) 7.02 (d) 2.7
  40. 40.Which is the greatest: 0.041, 0.7, 0.79, 0.671? (a) 0.041 (b) 0.7 (c) 0.79 (d) 0.671

Answer key

  1. 12.34
  2. 5.51
  3. 6.71
  4. 0.003
  5. 12.27
  6. 0.002
  7. 0.54
  8. 12.85
  9. 0.59
  10. 10.21
  11. 0.87
  12. 0.76
  13. 8.15
  14. 0.003
  15. 0.67
  16. 9.77
  17. 0.002
  18. 0.44
  19. 14.29
  20. 8.06
  21. 0.02
  22. 0.095
  23. 4.01
  24. 0.01
  25. 9.96
  26. 0.025
  27. 0.45
  28. 15.48
  29. 0.78
  30. 6
  31. 0.004
  32. 5
  33. 7.92
  34. 10.11
  35. 0.9
  36. 9.11
  37. 0.39
  38. 14.71
  39. 7.02
  40. 0.79

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