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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 178 · 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. 1.4.48 + 6.4 = ? (a) 10.98 (b) 10.78 (c) 10.88 (d) 5.12
  2. 2.Which is the greatest: 0.412, 0.5, 0.076, 0.54? (a) 0.412 (b) 0.5 (c) 0.076 (d) 0.54
  3. 3.3.01 + 4.4 = ? (a) 7.41 (b) 3.45 (c) 7.51 (d) 7.31
  4. 4.1.16 + 4.6 = ? (a) 5.66 (b) 5.86 (c) 5.76 (d) 1.62
  5. 5.What is the value of the digit 3 in 39.528? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  6. 6.2.74 + 7.4 = ? (a) 3.48 (b) 10.24 (c) 10.14 (d) 10.04
  7. 7.6.45 + 7.5 = ? (a) 13.85 (b) 14.05 (c) 13.95 (d) 7.2
  8. 8.What is the value of the digit 3 in 61.743? (a) 3 (b) 0.3 (c) 0.03 (d) 0.003
  9. 9.Which is the smallest: 0.022, 0.7, 0.685, 0.74? (a) 0.022 (b) 0.7 (c) 0.685 (d) 0.74
  10. 10.8.01 + 4.8 = ? (a) 8.49 (b) 12.71 (c) 12.91 (d) 12.81
  11. 11.What is the value of the digit 2 in 35.928? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  12. 12.Which is the greatest: 0.059, 0.477, 0.55, 0.5? (a) 0.059 (b) 0.477 (c) 0.55 (d) 0.5
  13. 13.Which is the smallest: 0.055, 0.5, 0.461, 0.59? (a) 0.055 (b) 0.5 (c) 0.461 (d) 0.59
  14. 14.What is the value of the digit 7 in 48.237? (a) 7 (b) 0.07 (c) 0.7 (d) 0.007
  15. 15.What is the value of the digit 4 in 41.628? (a) 0.4 (b) 4 (c) 0.04 (d) 40
  16. 16.Which is the smallest: 0.729, 0.8, 0.81, 0.083? (a) 0.729 (b) 0.8 (c) 0.81 (d) 0.083
  17. 17.4.06 + 4.7 = ? (a) 8.76 (b) 4.53 (c) 8.66 (d) 8.86
  18. 18.What is the value of the digit 9 in 89.162? (a) 90 (b) 9 (c) 0.9 (d) 0.09
  19. 19.What is the value of the digit 4 in 43.186? (a) 0.04 (b) 0.4 (c) 40 (d) 4
  20. 20.3.54 + 2.7 = ? (a) 3.81 (b) 6.24 (c) 6.34 (d) 6.14
  21. 21.Which is the greatest: 0.083, 0.41, 0.323, 0.4? (a) 0.083 (b) 0.41 (c) 0.323 (d) 0.4
  22. 22.3.74 + 9.4 = ? (a) 13.14 (b) 13.24 (c) 4.68 (d) 13.04
  23. 23.Which is the greatest: 0.321, 0.036, 0.4, 0.46? (a) 0.321 (b) 0.036 (c) 0.4 (d) 0.46
  24. 24.What is the value of the digit 9 in 25.913? (a) 0.009 (b) 9 (c) 0.9 (d) 0.09
  25. 25.What is the value of the digit 2 in 82.567? (a) 2 (b) 0.02 (c) 0.2 (d) 20
  26. 26.What is the value of the digit 7 in 27.154? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  27. 27.Which is the smallest: 0.7, 0.073, 0.647, 0.79? (a) 0.7 (b) 0.073 (c) 0.647 (d) 0.79
  28. 28.What is the value of the digit 8 in 84.617? (a) 0.08 (b) 8 (c) 80 (d) 0.8
  29. 29.What is the value of the digit 3 in 23.674? (a) 0.03 (b) 30 (c) 3 (d) 0.3
  30. 30.Which is the smallest: 0.013, 0.45, 0.391, 0.4? (a) 0.013 (b) 0.45 (c) 0.391 (d) 0.4
  31. 31.What is the value of the digit 5 in 78.145? (a) 0.5 (b) 5 (c) 0.05 (d) 0.005
  32. 32.What is the value of the digit 3 in 98.431? (a) 3 (b) 0.003 (c) 0.3 (d) 0.03
  33. 33.Which is the greatest: 0.026, 0.58, 0.478, 0.5? (a) 0.026 (b) 0.58 (c) 0.478 (d) 0.5
  34. 34.What is the value of the digit 7 in 71.349? (a) 0.07 (b) 0.7 (c) 70 (d) 7
  35. 35.What is the value of the digit 7 in 73.814? (a) 0.7 (b) 0.07 (c) 70 (d) 7
  36. 36.What is the value of the digit 1 in 71.635? (a) 0.1 (b) 1 (c) 10 (d) 0.01
  37. 37.What is the value of the digit 8 in 78.291? (a) 80 (b) 8 (c) 0.8 (d) 0.08
  38. 38.4.78 + 5.2 = ? (a) 5.3 (b) 10.08 (c) 9.98 (d) 9.88
  39. 39.8.11 + 8.2 = ? (a) 8.93 (b) 16.41 (c) 16.21 (d) 16.31
  40. 40.Which is the smallest: 0.071, 0.6, 0.559, 0.61? (a) 0.071 (b) 0.6 (c) 0.559 (d) 0.61

Answer key

  1. 10.88
  2. 0.54
  3. 7.41
  4. 5.76
  5. 30
  6. 10.14
  7. 13.95
  8. 0.003
  9. 0.022
  10. 12.81
  11. 0.02
  12. 0.55
  13. 0.055
  14. 0.007
  15. 40
  16. 0.083
  17. 8.76
  18. 9
  19. 40
  20. 6.24
  21. 0.41
  22. 13.14
  23. 0.46
  24. 0.9
  25. 2
  26. 7
  27. 0.073
  28. 80
  29. 3
  30. 0.013
  31. 0.005
  32. 0.03
  33. 0.58
  34. 70
  35. 70
  36. 1
  37. 8
  38. 9.98
  39. 16.31
  40. 0.071

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