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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 712 · 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. 1.4.01 + 5.8 = ? (a) 4.59 (b) 9.81 (c) 9.91 (d) 9.71
  2. 2.Which is the greatest: 0.749, 0.83, 0.054, 0.8? (a) 0.749 (b) 0.83 (c) 0.054 (d) 0.8
  3. 3.2.41 + 4.9 = ? (a) 2.9 (b) 7.31 (c) 7.41 (d) 7.21
  4. 4.What is the value of the digit 7 in 71.458? (a) 7 (b) 0.07 (c) 0.7 (d) 70
  5. 5.What is the value of the digit 2 in 23.587? (a) 0.2 (b) 2 (c) 20 (d) 0.02
  6. 6.What is the value of the digit 4 in 13.452? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  7. 7.7.81 + 9.1 = ? (a) 17.01 (b) 16.81 (c) 16.91 (d) 8.72
  8. 8.Which is the greatest: 0.68, 0.043, 0.575, 0.6? (a) 0.68 (b) 0.043 (c) 0.575 (d) 0.6
  9. 9.Which is the greatest: 0.8, 0.063, 0.85, 0.732? (a) 0.8 (b) 0.063 (c) 0.85 (d) 0.732
  10. 10.3.74 + 8.2 = ? (a) 11.84 (b) 11.94 (c) 4.56 (d) 12.04
  11. 11.2.44 + 2.1 = ? (a) 4.64 (b) 2.65 (c) 4.44 (d) 4.54
  12. 12.5.88 + 8.7 = ? (a) 14.68 (b) 14.58 (c) 14.48 (d) 6.75
  13. 13.6.87 + 8.9 = ? (a) 15.77 (b) 7.76 (c) 15.87 (d) 15.67
  14. 14.Which is the greatest: 0.77, 0.7, 0.023, 0.698? (a) 0.77 (b) 0.7 (c) 0.023 (d) 0.698
  15. 15.What is the value of the digit 1 in 17.428? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  16. 16.6.35 + 3.7 = ? (a) 9.95 (b) 6.72 (c) 10.15 (d) 10.05
  17. 17.3.42 + 7.7 = ? (a) 11.22 (b) 4.19 (c) 11.12 (d) 11.02
  18. 18.Which is the smallest: 0.47, 0.368, 0.4, 0.061? (a) 0.47 (b) 0.368 (c) 0.4 (d) 0.061
  19. 19.5.49 + 7.4 = ? (a) 12.99 (b) 6.23 (c) 12.89 (d) 12.79
  20. 20.What is the value of the digit 9 in 75.849? (a) 0.09 (b) 9 (c) 0.9 (d) 0.009
  21. 21.What is the value of the digit 7 in 46.875? (a) 7 (b) 0.07 (c) 0.7 (d) 0.007
  22. 22.6.48 + 1.7 = ? (a) 6.65 (b) 8.08 (c) 8.18 (d) 8.28
  23. 23.Which is the greatest: 0.78, 0.7, 0.696, 0.074? (a) 0.78 (b) 0.7 (c) 0.696 (d) 0.074
  24. 24.Which is the greatest: 0.027, 0.414, 0.53, 0.5? (a) 0.027 (b) 0.414 (c) 0.53 (d) 0.5
  25. 25.Which is the greatest: 0.058, 0.61, 0.6, 0.533? (a) 0.058 (b) 0.61 (c) 0.6 (d) 0.533
  26. 26.3.83 + 6.6 = ? (a) 4.49 (b) 10.33 (c) 10.53 (d) 10.43
  27. 27.What is the value of the digit 8 in 16.785? (a) 0.008 (b) 8 (c) 0.08 (d) 0.8
  28. 28.6.98 + 2.8 = ? (a) 7.26 (b) 9.68 (c) 9.78 (d) 9.88
  29. 29.7.27 + 7.4 = ? (a) 14.77 (b) 14.67 (c) 14.57 (d) 8.01
  30. 30.Which is the greatest: 0.032, 0.22, 0.2, 0.127? (a) 0.032 (b) 0.22 (c) 0.2 (d) 0.127
  31. 31.Which is the greatest: 0.24, 0.026, 0.152, 0.2? (a) 0.24 (b) 0.026 (c) 0.152 (d) 0.2
  32. 32.What is the value of the digit 1 in 73.215? (a) 0.1 (b) 0.01 (c) 1 (d) 0.001
  33. 33.What is the value of the digit 9 in 27.498? (a) 0.009 (b) 0.9 (c) 9 (d) 0.09
  34. 34.What is the value of the digit 8 in 31.284? (a) 0.08 (b) 0.8 (c) 0.008 (d) 8
  35. 35.What is the value of the digit 7 in 87.426? (a) 0.07 (b) 0.7 (c) 7 (d) 70
  36. 36.Which is the smallest: 0.35, 0.3, 0.218, 0.062? (a) 0.35 (b) 0.3 (c) 0.218 (d) 0.062
  37. 37.7.05 + 8.7 = ? (a) 15.85 (b) 15.75 (c) 15.65 (d) 7.92
  38. 38.What is the value of the digit 7 in 25.764? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  39. 39.Which is the greatest: 0.21, 0.084, 0.2, 0.164? (a) 0.21 (b) 0.084 (c) 0.2 (d) 0.164
  40. 40.What is the value of the digit 3 in 69.234? (a) 3 (b) 0.03 (c) 0.003 (d) 0.3

Answer key

  1. 9.81
  2. 0.83
  3. 7.31
  4. 70
  5. 20
  6. 0.4
  7. 16.91
  8. 0.68
  9. 0.85
  10. 11.94
  11. 4.54
  12. 14.58
  13. 15.77
  14. 0.77
  15. 10
  16. 10.05
  17. 11.12
  18. 0.061
  19. 12.89
  20. 0.009
  21. 0.07
  22. 8.18
  23. 0.78
  24. 0.53
  25. 0.61
  26. 10.43
  27. 0.08
  28. 9.78
  29. 14.67
  30. 0.22
  31. 0.24
  32. 0.01
  33. 0.09
  34. 0.08
  35. 7
  36. 0.062
  37. 15.75
  38. 0.7
  39. 0.21
  40. 0.03

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