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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 413 · 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. 1.5.86 + 3.9 = ? (a) 9.76 (b) 9.66 (c) 9.86 (d) 6.25
  2. 2.Which is the greatest: 0.348, 0.4, 0.023, 0.42? (a) 0.348 (b) 0.4 (c) 0.023 (d) 0.42
  3. 3.Which is the smallest: 0.8, 0.742, 0.015, 0.88? (a) 0.8 (b) 0.742 (c) 0.015 (d) 0.88
  4. 4.What is the value of the digit 9 in 13.942? (a) 0.009 (b) 0.9 (c) 0.09 (d) 9
  5. 5.Which is the greatest: 0.733, 0.87, 0.047, 0.8? (a) 0.733 (b) 0.87 (c) 0.047 (d) 0.8
  6. 6.What is the value of the digit 4 in 45.176? (a) 0.04 (b) 0.4 (c) 4 (d) 40
  7. 7.What is the value of the digit 2 in 84.321? (a) 2 (b) 0.02 (c) 0.002 (d) 0.2
  8. 8.3.39 + 1.2 = ? (a) 4.49 (b) 4.59 (c) 3.51 (d) 4.69
  9. 9.What is the value of the digit 8 in 83.459? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  10. 10.3.65 + 5.2 = ? (a) 4.17 (b) 8.85 (c) 8.75 (d) 8.95
  11. 11.What is the value of the digit 2 in 47.236? (a) 0.02 (b) 0.2 (c) 0.002 (d) 2
  12. 12.Which is the smallest: 0.669, 0.79, 0.7, 0.022? (a) 0.669 (b) 0.79 (c) 0.7 (d) 0.022
  13. 13.Which is the greatest: 0.091, 0.752, 0.8, 0.87? (a) 0.091 (b) 0.752 (c) 0.8 (d) 0.87
  14. 14.5.67 + 5.1 = ? (a) 10.67 (b) 6.18 (c) 10.77 (d) 10.87
  15. 15.Which is the greatest: 0.736, 0.095, 0.8, 0.88? (a) 0.736 (b) 0.095 (c) 0.8 (d) 0.88
  16. 16.4.06 + 2.9 = ? (a) 6.96 (b) 6.86 (c) 4.35 (d) 7.06
  17. 17.What is the value of the digit 9 in 72.963? (a) 9 (b) 0.9 (c) 0.009 (d) 0.09
  18. 18.Which is the greatest: 0.011, 0.8, 0.728, 0.82? (a) 0.011 (b) 0.8 (c) 0.728 (d) 0.82
  19. 19.5.01 + 9.4 = ? (a) 14.31 (b) 14.51 (c) 14.41 (d) 5.95
  20. 20.Which is the smallest: 0.042, 0.4, 0.334, 0.44? (a) 0.042 (b) 0.4 (c) 0.334 (d) 0.44
  21. 21.3.88 + 9.1 = ? (a) 13.08 (b) 4.79 (c) 12.98 (d) 12.88
  22. 22.What is the value of the digit 9 in 51.698? (a) 9 (b) 0.09 (c) 0.9 (d) 0.009
  23. 23.8.01 + 2.7 = ? (a) 8.28 (b) 10.81 (c) 10.71 (d) 10.61
  24. 24.Which is the smallest: 0.037, 0.719, 0.8, 0.87? (a) 0.037 (b) 0.719 (c) 0.8 (d) 0.87
  25. 25.What is the value of the digit 8 in 25.168? (a) 0.08 (b) 8 (c) 0.008 (d) 0.8
  26. 26.6.61 + 8.9 = ? (a) 15.61 (b) 15.51 (c) 7.5 (d) 15.41
  27. 27.Which is the smallest: 0.223, 0.33, 0.031, 0.3? (a) 0.223 (b) 0.33 (c) 0.031 (d) 0.3
  28. 28.Which is the smallest: 0.561, 0.64, 0.6, 0.047? (a) 0.561 (b) 0.64 (c) 0.6 (d) 0.047
  29. 29.Which is the greatest: 0.098, 0.5, 0.51, 0.471? (a) 0.098 (b) 0.5 (c) 0.51 (d) 0.471
  30. 30.Which is the greatest: 0.4, 0.384, 0.41, 0.064? (a) 0.4 (b) 0.384 (c) 0.41 (d) 0.064
  31. 31.4.89 + 4.5 = ? (a) 9.29 (b) 9.39 (c) 5.34 (d) 9.49
  32. 32.Which is the greatest: 0.3, 0.32, 0.067, 0.224? (a) 0.3 (b) 0.32 (c) 0.067 (d) 0.224
  33. 33.What is the value of the digit 1 in 25.971? (a) 1 (b) 0.1 (c) 0.01 (d) 0.001
  34. 34.Which is the greatest: 0.89, 0.8, 0.711, 0.042? (a) 0.89 (b) 0.8 (c) 0.711 (d) 0.042
  35. 35.3.77 + 6.1 = ? (a) 9.77 (b) 4.38 (c) 9.87 (d) 9.97
  36. 36.What is the value of the digit 5 in 34.625? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  37. 37.6.89 + 8.1 = ? (a) 14.99 (b) 14.89 (c) 7.7 (d) 15.09
  38. 38.Which is the smallest: 0.234, 0.32, 0.3, 0.043? (a) 0.234 (b) 0.32 (c) 0.3 (d) 0.043
  39. 39.8.75 + 6.9 = ? (a) 15.65 (b) 9.44 (c) 15.55 (d) 15.75
  40. 40.What is the value of the digit 7 in 47.692? (a) 7 (b) 0.7 (c) 0.07 (d) 70

Answer key

  1. 9.76
  2. 0.42
  3. 0.015
  4. 0.9
  5. 0.87
  6. 40
  7. 0.02
  8. 4.59
  9. 80
  10. 8.85
  11. 0.2
  12. 0.022
  13. 0.87
  14. 10.77
  15. 0.88
  16. 6.96
  17. 0.9
  18. 0.82
  19. 14.41
  20. 0.042
  21. 12.98
  22. 0.09
  23. 10.71
  24. 0.037
  25. 0.008
  26. 15.51
  27. 0.031
  28. 0.047
  29. 0.51
  30. 0.41
  31. 9.39
  32. 0.32
  33. 0.001
  34. 0.89
  35. 9.87
  36. 0.005
  37. 14.99
  38. 0.043
  39. 15.65
  40. 7

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