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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 37 · 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. 1.8.11 + 6.1 = ? (a) 8.72 (b) 14.31 (c) 14.21 (d) 14.11
  2. 2.Which is the smallest: 0.077, 0.55, 0.5, 0.499? (a) 0.077 (b) 0.55 (c) 0.5 (d) 0.499
  3. 3.Which is the greatest: 0.718, 0.81, 0.077, 0.8? (a) 0.718 (b) 0.81 (c) 0.077 (d) 0.8
  4. 4.What is the value of the digit 9 in 73.459? (a) 0.09 (b) 0.9 (c) 0.009 (d) 9
  5. 5.9.87 + 3.7 = ? (a) 10.24 (b) 13.67 (c) 13.57 (d) 13.47
  6. 6.Which is the smallest: 0.69, 0.029, 0.6, 0.527? (a) 0.69 (b) 0.029 (c) 0.6 (d) 0.527
  7. 7.7.64 + 6.8 = ? (a) 14.34 (b) 14.44 (c) 8.32 (d) 14.54
  8. 8.6.41 + 5.2 = ? (a) 11.61 (b) 6.93 (c) 11.71 (d) 11.51
  9. 9.Which is the smallest: 0.758, 0.81, 0.082, 0.8? (a) 0.758 (b) 0.81 (c) 0.082 (d) 0.8
  10. 10.What is the value of the digit 1 in 91.742? (a) 0.1 (b) 0.01 (c) 10 (d) 1
  11. 11.Which is the greatest: 0.252, 0.016, 0.3, 0.35? (a) 0.252 (b) 0.016 (c) 0.3 (d) 0.35
  12. 12.Which is the greatest: 0.7, 0.687, 0.066, 0.71? (a) 0.7 (b) 0.687 (c) 0.066 (d) 0.71
  13. 13.2.72 + 3.5 = ? (a) 6.22 (b) 3.07 (c) 6.32 (d) 6.12
  14. 14.What is the value of the digit 1 in 13.546? (a) 0.01 (b) 1 (c) 0.1 (d) 10
  15. 15.What is the value of the digit 1 in 58.123? (a) 0.01 (b) 0.1 (c) 0.001 (d) 1
  16. 16.What is the value of the digit 9 in 49.623? (a) 9 (b) 0.9 (c) 90 (d) 0.09
  17. 17.Which is the smallest: 0.095, 0.297, 0.3, 0.34? (a) 0.095 (b) 0.297 (c) 0.3 (d) 0.34
  18. 18.What is the value of the digit 7 in 17.329? (a) 7 (b) 0.07 (c) 70 (d) 0.7
  19. 19.9.62 + 8.8 = ? (a) 18.32 (b) 10.5 (c) 18.42 (d) 18.52
  20. 20.4.11 + 3.6 = ? (a) 7.61 (b) 7.81 (c) 7.71 (d) 4.47
  21. 21.Which is the smallest: 0.6, 0.68, 0.551, 0.045? (a) 0.6 (b) 0.68 (c) 0.551 (d) 0.045
  22. 22.What is the value of the digit 8 in 12.387? (a) 8 (b) 0.8 (c) 0.08 (d) 0.008
  23. 23.3.58 + 6.2 = ? (a) 9.68 (b) 4.2 (c) 9.88 (d) 9.78
  24. 24.Which is the greatest: 0.82, 0.766, 0.046, 0.8? (a) 0.82 (b) 0.766 (c) 0.046 (d) 0.8
  25. 25.4.26 + 6.6 = ? (a) 10.76 (b) 10.86 (c) 10.96 (d) 4.92
  26. 26.Which is the smallest: 0.782, 0.045, 0.87, 0.8? (a) 0.782 (b) 0.045 (c) 0.87 (d) 0.8
  27. 27.What is the value of the digit 1 in 71.435? (a) 10 (b) 0.1 (c) 1 (d) 0.01
  28. 28.What is the value of the digit 8 in 28.134? (a) 8 (b) 0.08 (c) 80 (d) 0.8
  29. 29.5.23 + 9.2 = ? (a) 6.15 (b) 14.53 (c) 14.33 (d) 14.43
  30. 30.1.61 + 3.8 = ? (a) 5.51 (b) 5.41 (c) 5.31 (d) 1.99
  31. 31.What is the value of the digit 5 in 79.135? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  32. 32.8.56 + 7.1 = ? (a) 15.56 (b) 15.76 (c) 15.66 (d) 9.27
  33. 33.Which is the greatest: 0.242, 0.084, 0.33, 0.3? (a) 0.242 (b) 0.084 (c) 0.33 (d) 0.3
  34. 34.3.35 + 6.4 = ? (a) 9.65 (b) 3.99 (c) 9.85 (d) 9.75
  35. 35.1.43 + 5.7 = ? (a) 7.03 (b) 7.13 (c) 2 (d) 7.23
  36. 36.Which is the greatest: 0.016, 0.86, 0.8, 0.737? (a) 0.016 (b) 0.86 (c) 0.8 (d) 0.737
  37. 37.9.15 + 2.9 = ? (a) 12.15 (b) 11.95 (c) 12.05 (d) 9.44
  38. 38.Which is the greatest: 0.518, 0.037, 0.6, 0.61? (a) 0.518 (b) 0.037 (c) 0.6 (d) 0.61
  39. 39.8.03 + 9.1 = ? (a) 17.23 (b) 17.03 (c) 17.13 (d) 8.94
  40. 40.7.45 + 6.1 = ? (a) 8.06 (b) 13.65 (c) 13.45 (d) 13.55

Answer key

  1. 14.21
  2. 0.077
  3. 0.81
  4. 0.009
  5. 13.57
  6. 0.029
  7. 14.44
  8. 11.61
  9. 0.082
  10. 1
  11. 0.35
  12. 0.71
  13. 6.22
  14. 10
  15. 0.1
  16. 9
  17. 0.095
  18. 7
  19. 18.42
  20. 7.71
  21. 0.045
  22. 0.08
  23. 9.78
  24. 0.82
  25. 10.86
  26. 0.045
  27. 1
  28. 8
  29. 14.43
  30. 5.41
  31. 0.005
  32. 15.66
  33. 0.33
  34. 9.75
  35. 7.13
  36. 0.86
  37. 12.05
  38. 0.61
  39. 17.13
  40. 13.55

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