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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 156 · 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.Which is the smallest: 0.7, 0.79, 0.035, 0.622? (a) 0.7 (b) 0.79 (c) 0.035 (d) 0.622
  2. 2.1.59 + 2.8 = ? (a) 1.87 (b) 4.29 (c) 4.49 (d) 4.39
  3. 3.6.84 + 1.8 = ? (a) 8.54 (b) 8.64 (c) 8.74 (d) 7.02
  4. 4.What is the value of the digit 8 in 48.521? (a) 0.08 (b) 0.8 (c) 8 (d) 80
  5. 5.What is the value of the digit 3 in 18.375? (a) 0.003 (b) 0.3 (c) 0.03 (d) 3
  6. 6.What is the value of the digit 7 in 79.635? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  7. 7.What is the value of the digit 6 in 62.149? (a) 0.6 (b) 6 (c) 0.06 (d) 60
  8. 8.9.89 + 3.7 = ? (a) 13.49 (b) 13.69 (c) 13.59 (d) 10.26
  9. 9.3.41 + 4.1 = ? (a) 7.61 (b) 3.82 (c) 7.51 (d) 7.41
  10. 10.Which is the smallest: 0.322, 0.023, 0.4, 0.41? (a) 0.322 (b) 0.023 (c) 0.4 (d) 0.41
  11. 11.What is the value of the digit 4 in 46.139? (a) 4 (b) 0.04 (c) 40 (d) 0.4
  12. 12.Which is the greatest: 0.7, 0.632, 0.057, 0.76? (a) 0.7 (b) 0.632 (c) 0.057 (d) 0.76
  13. 13.9.76 + 1.9 = ? (a) 11.76 (b) 11.56 (c) 9.95 (d) 11.66
  14. 14.What is the value of the digit 2 in 59.238? (a) 0.02 (b) 0.002 (c) 2 (d) 0.2
  15. 15.Which is the smallest: 0.8, 0.742, 0.81, 0.046? (a) 0.8 (b) 0.742 (c) 0.81 (d) 0.046
  16. 16.What is the value of the digit 3 in 83.176? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  17. 17.What is the value of the digit 5 in 49.578? (a) 0.05 (b) 0.005 (c) 5 (d) 0.5
  18. 18.1.13 + 8.6 = ? (a) 9.63 (b) 9.83 (c) 9.73 (d) 1.99
  19. 19.Which is the smallest: 0.013, 0.33, 0.3, 0.265? (a) 0.013 (b) 0.33 (c) 0.3 (d) 0.265
  20. 20.Which is the smallest: 0.6, 0.072, 0.543, 0.63? (a) 0.6 (b) 0.072 (c) 0.543 (d) 0.63
  21. 21.What is the value of the digit 6 in 69.821? (a) 0.6 (b) 0.06 (c) 6 (d) 60
  22. 22.What is the value of the digit 5 in 59.413? (a) 50 (b) 5 (c) 0.5 (d) 0.05
  23. 23.Which is the greatest: 0.153, 0.2, 0.28, 0.057? (a) 0.153 (b) 0.2 (c) 0.28 (d) 0.057
  24. 24.2.15 + 9.5 = ? (a) 3.1 (b) 11.75 (c) 11.55 (d) 11.65
  25. 25.What is the value of the digit 6 in 73.896? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  26. 26.3.05 + 8.3 = ? (a) 11.45 (b) 11.35 (c) 3.88 (d) 11.25
  27. 27.What is the value of the digit 6 in 62.837? (a) 6 (b) 0.06 (c) 0.6 (d) 60
  28. 28.3.21 + 8.1 = ? (a) 11.21 (b) 11.31 (c) 11.41 (d) 4.02
  29. 29.1.28 + 5.6 = ? (a) 1.84 (b) 6.88 (c) 6.98 (d) 6.78
  30. 30.Which is the smallest: 0.31, 0.029, 0.273, 0.3? (a) 0.31 (b) 0.029 (c) 0.273 (d) 0.3
  31. 31.Which is the greatest: 0.091, 0.439, 0.58, 0.5? (a) 0.091 (b) 0.439 (c) 0.58 (d) 0.5
  32. 32.What is the value of the digit 1 in 87.291? (a) 1 (b) 0.001 (c) 0.01 (d) 0.1
  33. 33.What is the value of the digit 6 in 52.186? (a) 0.06 (b) 6 (c) 0.6 (d) 0.006
  34. 34.3.09 + 8.9 = ? (a) 11.99 (b) 3.98 (c) 11.89 (d) 12.09
  35. 35.Which is the greatest: 0.093, 0.29, 0.169, 0.2? (a) 0.093 (b) 0.29 (c) 0.169 (d) 0.2
  36. 36.Which is the smallest: 0.022, 0.6, 0.578, 0.61? (a) 0.022 (b) 0.6 (c) 0.578 (d) 0.61
  37. 37.Which is the smallest: 0.014, 0.8, 0.711, 0.81? (a) 0.014 (b) 0.8 (c) 0.711 (d) 0.81
  38. 38.Which is the greatest: 0.21, 0.2, 0.082, 0.198? (a) 0.21 (b) 0.2 (c) 0.082 (d) 0.198
  39. 39.6.04 + 4.6 = ? (a) 6.5 (b) 10.74 (c) 10.64 (d) 10.54
  40. 40.Which is the greatest: 0.323, 0.4, 0.47, 0.097? (a) 0.323 (b) 0.4 (c) 0.47 (d) 0.097

Answer key

  1. 0.035
  2. 4.39
  3. 8.64
  4. 8
  5. 0.3
  6. 70
  7. 60
  8. 13.59
  9. 7.51
  10. 0.023
  11. 40
  12. 0.76
  13. 11.66
  14. 0.2
  15. 0.046
  16. 3
  17. 0.5
  18. 9.73
  19. 0.013
  20. 0.072
  21. 60
  22. 50
  23. 0.28
  24. 11.65
  25. 0.006
  26. 11.35
  27. 60
  28. 11.31
  29. 6.88
  30. 0.029
  31. 0.58
  32. 0.001
  33. 0.006
  34. 11.99
  35. 0.29
  36. 0.022
  37. 0.014
  38. 0.21
  39. 10.64
  40. 0.47

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