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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 592 · 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 greatest: 0.062, 0.5, 0.58, 0.489? (a) 0.062 (b) 0.5 (c) 0.58 (d) 0.489
  2. 2.What is the value of the digit 5 in 86.425? (a) 0.05 (b) 5 (c) 0.5 (d) 0.005
  3. 3.Which is the greatest: 0.693, 0.7, 0.79, 0.043? (a) 0.693 (b) 0.7 (c) 0.79 (d) 0.043
  4. 4.What is the value of the digit 6 in 23.465? (a) 0.6 (b) 6 (c) 0.006 (d) 0.06
  5. 5.Which is the smallest: 0.224, 0.074, 0.36, 0.3? (a) 0.224 (b) 0.074 (c) 0.36 (d) 0.3
  6. 6.3.66 + 4.5 = ? (a) 4.11 (b) 8.06 (c) 8.26 (d) 8.16
  7. 7.Which is the greatest: 0.77, 0.068, 0.7, 0.694? (a) 0.77 (b) 0.068 (c) 0.7 (d) 0.694
  8. 8.Which is the smallest: 0.6, 0.543, 0.031, 0.68? (a) 0.6 (b) 0.543 (c) 0.031 (d) 0.68
  9. 9.Which is the smallest: 0.512, 0.67, 0.6, 0.069? (a) 0.512 (b) 0.67 (c) 0.6 (d) 0.069
  10. 10.Which is the greatest: 0.298, 0.3, 0.053, 0.38? (a) 0.298 (b) 0.3 (c) 0.053 (d) 0.38
  11. 11.Which is the smallest: 0.78, 0.077, 0.662, 0.7? (a) 0.78 (b) 0.077 (c) 0.662 (d) 0.7
  12. 12.Which is the greatest: 0.022, 0.3, 0.227, 0.32? (a) 0.022 (b) 0.3 (c) 0.227 (d) 0.32
  13. 13.3.59 + 4.8 = ? (a) 8.49 (b) 8.29 (c) 4.07 (d) 8.39
  14. 14.1.64 + 2.5 = ? (a) 4.04 (b) 4.24 (c) 1.89 (d) 4.14
  15. 15.Which is the greatest: 0.39, 0.259, 0.091, 0.3? (a) 0.39 (b) 0.259 (c) 0.091 (d) 0.3
  16. 16.6.86 + 1.1 = ? (a) 8.06 (b) 7.86 (c) 6.97 (d) 7.96
  17. 17.2.04 + 8.5 = ? (a) 2.89 (b) 10.64 (c) 10.54 (d) 10.44
  18. 18.2.44 + 1.6 = ? (a) 4.14 (b) 2.6 (c) 4.04 (d) 3.94
  19. 19.What is the value of the digit 2 in 91.523? (a) 0.2 (b) 0.002 (c) 0.02 (d) 2
  20. 20.Which is the smallest: 0.016, 0.31, 0.3, 0.219? (a) 0.016 (b) 0.31 (c) 0.3 (d) 0.219
  21. 21.3.51 + 7.2 = ? (a) 10.71 (b) 10.61 (c) 4.23 (d) 10.81
  22. 22.Which is the smallest: 0.034, 0.46, 0.361, 0.4? (a) 0.034 (b) 0.46 (c) 0.361 (d) 0.4
  23. 23.3.35 + 1.5 = ? (a) 3.5 (b) 4.75 (c) 4.85 (d) 4.95
  24. 24.What is the value of the digit 7 in 19.784? (a) 0.7 (b) 7 (c) 0.07 (d) 0.007
  25. 25.Which is the greatest: 0.035, 0.515, 0.67, 0.6? (a) 0.035 (b) 0.515 (c) 0.67 (d) 0.6
  26. 26.Which is the greatest: 0.57, 0.5, 0.439, 0.068? (a) 0.57 (b) 0.5 (c) 0.439 (d) 0.068
  27. 27.1.51 + 7.2 = ? (a) 8.71 (b) 8.81 (c) 8.61 (d) 2.23
  28. 28.What is the value of the digit 5 in 35.126? (a) 0.5 (b) 0.05 (c) 5 (d) 50
  29. 29.9.56 + 8.8 = ? (a) 18.46 (b) 10.44 (c) 18.36 (d) 18.26
  30. 30.What is the value of the digit 6 in 98.465? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006
  31. 31.2.02 + 4.9 = ? (a) 6.82 (b) 7.02 (c) 6.92 (d) 2.51
  32. 32.9.52 + 5.7 = ? (a) 10.09 (b) 15.32 (c) 15.22 (d) 15.12
  33. 33.2.02 + 2.4 = ? (a) 2.26 (b) 4.42 (c) 4.32 (d) 4.52
  34. 34.6.81 + 8.4 = ? (a) 15.11 (b) 15.31 (c) 15.21 (d) 7.65
  35. 35.Which is the greatest: 0.3, 0.037, 0.32, 0.268? (a) 0.3 (b) 0.037 (c) 0.32 (d) 0.268
  36. 36.3.98 + 4.3 = ? (a) 8.38 (b) 4.41 (c) 8.18 (d) 8.28
  37. 37.9.27 + 8.9 = ? (a) 10.16 (b) 18.07 (c) 18.27 (d) 18.17
  38. 38.Which is the greatest: 0.6, 0.63, 0.526, 0.082? (a) 0.6 (b) 0.63 (c) 0.526 (d) 0.082
  39. 39.Which is the greatest: 0.71, 0.679, 0.7, 0.084? (a) 0.71 (b) 0.679 (c) 0.7 (d) 0.084
  40. 40.4.81 + 1.9 = ? (a) 6.81 (b) 5 (c) 6.61 (d) 6.71

Answer key

  1. 0.58
  2. 0.005
  3. 0.79
  4. 0.06
  5. 0.074
  6. 8.16
  7. 0.77
  8. 0.031
  9. 0.069
  10. 0.38
  11. 0.077
  12. 0.32
  13. 8.39
  14. 4.14
  15. 0.39
  16. 7.96
  17. 10.54
  18. 4.04
  19. 0.02
  20. 0.016
  21. 10.71
  22. 0.034
  23. 4.85
  24. 0.7
  25. 0.67
  26. 0.57
  27. 8.71
  28. 5
  29. 18.36
  30. 0.06
  31. 6.92
  32. 15.22
  33. 4.42
  34. 15.21
  35. 0.32
  36. 8.28
  37. 18.17
  38. 0.63
  39. 0.71
  40. 6.71

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