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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 346 · 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. 1.9.58 + 9.3 = ? (a) 18.98 (b) 18.88 (c) 10.51 (d) 18.78
  2. 2.Which is the smallest: 0.067, 0.21, 0.2, 0.178? (a) 0.067 (b) 0.21 (c) 0.2 (d) 0.178
  3. 3.6.44 + 6.7 = ? (a) 13.14 (b) 13.24 (c) 7.11 (d) 13.04
  4. 4.5.99 + 2.8 = ? (a) 8.79 (b) 8.89 (c) 8.69 (d) 6.27
  5. 5.Which is the smallest: 0.83, 0.783, 0.8, 0.075? (a) 0.83 (b) 0.783 (c) 0.8 (d) 0.075
  6. 6.What is the value of the digit 5 in 57.263? (a) 0.05 (b) 50 (c) 0.5 (d) 5
  7. 7.4.13 + 4.4 = ? (a) 8.63 (b) 4.57 (c) 8.43 (d) 8.53
  8. 8.7.78 + 4.2 = ? (a) 8.2 (b) 11.98 (c) 11.88 (d) 12.08
  9. 9.What is the value of the digit 2 in 69.215? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  10. 10.6.56 + 1.9 = ? (a) 8.46 (b) 8.36 (c) 8.56 (d) 6.75
  11. 11.What is the value of the digit 9 in 92.657? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  12. 12.Which is the smallest: 0.65, 0.6, 0.514, 0.027? (a) 0.65 (b) 0.6 (c) 0.514 (d) 0.027
  13. 13.1.53 + 7.1 = ? (a) 2.24 (b) 8.63 (c) 8.53 (d) 8.73
  14. 14.1.35 + 7.5 = ? (a) 8.85 (b) 8.75 (c) 2.1 (d) 8.95
  15. 15.Which is the greatest: 0.096, 0.163, 0.2, 0.27? (a) 0.096 (b) 0.163 (c) 0.2 (d) 0.27
  16. 16.What is the value of the digit 2 in 17.286? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  17. 17.Which is the smallest: 0.5, 0.476, 0.58, 0.021? (a) 0.5 (b) 0.476 (c) 0.58 (d) 0.021
  18. 18.8.02 + 2.1 = ? (a) 10.02 (b) 10.22 (c) 8.23 (d) 10.12
  19. 19.4.76 + 3.8 = ? (a) 5.14 (b) 8.66 (c) 8.46 (d) 8.56
  20. 20.7.54 + 1.4 = ? (a) 7.68 (b) 8.84 (c) 8.94 (d) 9.04
  21. 21.Which is the smallest: 0.038, 0.44, 0.4, 0.349? (a) 0.038 (b) 0.44 (c) 0.4 (d) 0.349
  22. 22.What is the value of the digit 5 in 86.542? (a) 0.005 (b) 5 (c) 0.05 (d) 0.5
  23. 23.What is the value of the digit 3 in 98.375? (a) 3 (b) 0.3 (c) 0.003 (d) 0.03
  24. 24.3.91 + 5.5 = ? (a) 9.51 (b) 9.41 (c) 4.46 (d) 9.31
  25. 25.4.34 + 1.1 = ? (a) 4.45 (b) 5.54 (c) 5.34 (d) 5.44
  26. 26.Which is the greatest: 0.085, 0.88, 0.738, 0.8? (a) 0.085 (b) 0.88 (c) 0.738 (d) 0.8
  27. 27.What is the value of the digit 8 in 78.345? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  28. 28.Which is the smallest: 0.257, 0.023, 0.35, 0.3? (a) 0.257 (b) 0.023 (c) 0.35 (d) 0.3
  29. 29.3.06 + 3.3 = ? (a) 3.39 (b) 6.46 (c) 6.26 (d) 6.36
  30. 30.8.84 + 8.3 = ? (a) 9.67 (b) 17.04 (c) 17.24 (d) 17.14
  31. 31.3.85 + 2.5 = ? (a) 6.45 (b) 6.35 (c) 4.1 (d) 6.25
  32. 32.1.24 + 9.1 = ? (a) 10.44 (b) 10.24 (c) 2.15 (d) 10.34
  33. 33.Which is the smallest: 0.481, 0.5, 0.063, 0.51? (a) 0.481 (b) 0.5 (c) 0.063 (d) 0.51
  34. 34.Which is the smallest: 0.154, 0.22, 0.2, 0.022? (a) 0.154 (b) 0.22 (c) 0.2 (d) 0.022
  35. 35.What is the value of the digit 7 in 31.796? (a) 0.07 (b) 7 (c) 0.7 (d) 0.007
  36. 36.What is the value of the digit 1 in 31.562? (a) 1 (b) 0.1 (c) 0.01 (d) 10
  37. 37.Which is the greatest: 0.053, 0.511, 0.61, 0.6? (a) 0.053 (b) 0.511 (c) 0.61 (d) 0.6
  38. 38.3.69 + 2.1 = ? (a) 5.69 (b) 3.9 (c) 5.89 (d) 5.79
  39. 39.Which is the greatest: 0.175, 0.27, 0.053, 0.2? (a) 0.175 (b) 0.27 (c) 0.053 (d) 0.2
  40. 40.What is the value of the digit 7 in 86.137? (a) 0.07 (b) 0.7 (c) 0.007 (d) 7

Answer key

  1. 18.88
  2. 0.067
  3. 13.14
  4. 8.79
  5. 0.075
  6. 50
  7. 8.53
  8. 11.98
  9. 0.2
  10. 8.46
  11. 90
  12. 0.027
  13. 8.63
  14. 8.85
  15. 0.27
  16. 0.2
  17. 0.021
  18. 10.12
  19. 8.56
  20. 8.94
  21. 0.038
  22. 0.5
  23. 0.3
  24. 9.41
  25. 5.44
  26. 0.88
  27. 8
  28. 0.023
  29. 6.36
  30. 17.14
  31. 6.35
  32. 10.34
  33. 0.063
  34. 0.022
  35. 0.7
  36. 1
  37. 0.61
  38. 5.79
  39. 0.27
  40. 0.007

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