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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 767 · 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: 0.5, 0.081, 0.53, 0.446? (a) 0.5 (b) 0.081 (c) 0.53 (d) 0.446
  2. 2.What is the value of the digit 7 in 32.781? (a) 0.007 (b) 0.07 (c) 7 (d) 0.7
  3. 3.What is the value of the digit 1 in 42.619? (a) 0.001 (b) 1 (c) 0.1 (d) 0.01
  4. 4.Which is the greatest: 0.2, 0.069, 0.138, 0.28? (a) 0.2 (b) 0.069 (c) 0.138 (d) 0.28
  5. 5.Which is the smallest: 0.5, 0.59, 0.499, 0.027? (a) 0.5 (b) 0.59 (c) 0.499 (d) 0.027
  6. 6.7.35 + 2.3 = ? (a) 9.55 (b) 7.58 (c) 9.75 (d) 9.65
  7. 7.Which is the smallest: 0.53, 0.425, 0.5, 0.095? (a) 0.53 (b) 0.425 (c) 0.5 (d) 0.095
  8. 8.Which is the smallest: 0.434, 0.57, 0.064, 0.5? (a) 0.434 (b) 0.57 (c) 0.064 (d) 0.5
  9. 9.7.63 + 2.1 = ? (a) 7.84 (b) 9.73 (c) 9.63 (d) 9.83
  10. 10.7.12 + 3.8 = ? (a) 7.5 (b) 11.02 (c) 10.82 (d) 10.92
  11. 11.2.48 + 2.4 = ? (a) 4.88 (b) 2.72 (c) 4.78 (d) 4.98
  12. 12.2.94 + 2.5 = ? (a) 3.19 (b) 5.44 (c) 5.54 (d) 5.34
  13. 13.What is the value of the digit 5 in 15.932? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  14. 14.1.13 + 9.5 = ? (a) 10.53 (b) 10.73 (c) 2.08 (d) 10.63
  15. 15.What is the value of the digit 3 in 62.839? (a) 0.3 (b) 0.003 (c) 0.03 (d) 3
  16. 16.8.42 + 1.2 = ? (a) 9.62 (b) 9.72 (c) 9.52 (d) 8.54
  17. 17.Which is the smallest: 0.015, 0.464, 0.55, 0.5? (a) 0.015 (b) 0.464 (c) 0.55 (d) 0.5
  18. 18.2.78 + 7.8 = ? (a) 10.48 (b) 3.56 (c) 10.58 (d) 10.68
  19. 19.8.25 + 6.6 = ? (a) 8.91 (b) 14.95 (c) 14.75 (d) 14.85
  20. 20.8.23 + 5.4 = ? (a) 8.77 (b) 13.63 (c) 13.73 (d) 13.53
  21. 21.5.28 + 3.1 = ? (a) 5.59 (b) 8.48 (c) 8.38 (d) 8.28
  22. 22.Which is the smallest: 0.35, 0.062, 0.242, 0.3? (a) 0.35 (b) 0.062 (c) 0.242 (d) 0.3
  23. 23.Which is the smallest: 0.084, 0.87, 0.723, 0.8? (a) 0.084 (b) 0.87 (c) 0.723 (d) 0.8
  24. 24.What is the value of the digit 5 in 35.827? (a) 50 (b) 0.5 (c) 0.05 (d) 5
  25. 25.What is the value of the digit 9 in 91.275? (a) 0.9 (b) 0.09 (c) 9 (d) 90
  26. 26.What is the value of the digit 3 in 48.635? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3
  27. 27.What is the value of the digit 7 in 21.597? (a) 0.007 (b) 7 (c) 0.07 (d) 0.7
  28. 28.What is the value of the digit 7 in 57.642? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  29. 29.6.26 + 3.7 = ? (a) 9.96 (b) 6.63 (c) 10.06 (d) 9.86
  30. 30.Which is the greatest: 0.56, 0.455, 0.5, 0.072? (a) 0.56 (b) 0.455 (c) 0.5 (d) 0.072
  31. 31.9.51 + 8.8 = ? (a) 18.31 (b) 18.21 (c) 18.41 (d) 10.39
  32. 32.Which is the greatest: 0.7, 0.635, 0.72, 0.022? (a) 0.7 (b) 0.635 (c) 0.72 (d) 0.022
  33. 33.6.25 + 9.3 = ? (a) 15.65 (b) 7.18 (c) 15.45 (d) 15.55
  34. 34.9.76 + 8.9 = ? (a) 18.66 (b) 18.56 (c) 18.76 (d) 10.65
  35. 35.What is the value of the digit 9 in 19.463? (a) 90 (b) 0.9 (c) 0.09 (d) 9
  36. 36.Which is the smallest: 0.184, 0.29, 0.084, 0.2? (a) 0.184 (b) 0.29 (c) 0.084 (d) 0.2
  37. 37.3.92 + 2.8 = ? (a) 6.62 (b) 6.72 (c) 4.2 (d) 6.82
  38. 38.Which is the smallest: 0.335, 0.046, 0.45, 0.4? (a) 0.335 (b) 0.046 (c) 0.45 (d) 0.4
  39. 39.What is the value of the digit 6 in 72.456? (a) 0.06 (b) 6 (c) 0.006 (d) 0.6
  40. 40.7.91 + 3.5 = ? (a) 8.26 (b) 11.51 (c) 11.31 (d) 11.41

Answer key

  1. 0.081
  2. 0.7
  3. 0.01
  4. 0.28
  5. 0.027
  6. 9.65
  7. 0.095
  8. 0.064
  9. 9.73
  10. 10.92
  11. 4.88
  12. 5.44
  13. 5
  14. 10.63
  15. 0.03
  16. 9.62
  17. 0.015
  18. 10.58
  19. 14.85
  20. 13.63
  21. 8.38
  22. 0.062
  23. 0.084
  24. 5
  25. 90
  26. 0.03
  27. 0.007
  28. 7
  29. 9.96
  30. 0.56
  31. 18.31
  32. 0.72
  33. 15.55
  34. 18.66
  35. 9
  36. 0.084
  37. 6.72
  38. 0.046
  39. 0.006
  40. 11.41

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