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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 769 · 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 smallest: 0.012, 0.7, 0.75, 0.623? (a) 0.012 (b) 0.7 (c) 0.75 (d) 0.623
  2. 2.9.81 + 3.1 = ? (a) 12.91 (b) 10.12 (c) 12.81 (d) 13.01
  3. 3.Which is the smallest: 0.75, 0.632, 0.016, 0.7? (a) 0.75 (b) 0.632 (c) 0.016 (d) 0.7
  4. 4.Which is the greatest: 0.88, 0.8, 0.753, 0.069? (a) 0.88 (b) 0.8 (c) 0.753 (d) 0.069
  5. 5.Which is the greatest: 0.5, 0.56, 0.416, 0.028? (a) 0.5 (b) 0.56 (c) 0.416 (d) 0.028
  6. 6.What is the value of the digit 1 in 96.417? (a) 0.001 (b) 0.01 (c) 0.1 (d) 1
  7. 7.4.05 + 7.2 = ? (a) 11.35 (b) 11.15 (c) 4.77 (d) 11.25
  8. 8.8.41 + 7.1 = ? (a) 15.61 (b) 9.12 (c) 15.41 (d) 15.51
  9. 9.What is the value of the digit 5 in 15.738? (a) 0.5 (b) 0.05 (c) 50 (d) 5
  10. 10.Which is the smallest: 0.4, 0.43, 0.044, 0.369? (a) 0.4 (b) 0.43 (c) 0.044 (d) 0.369
  11. 11.7.26 + 4.1 = ? (a) 11.36 (b) 11.46 (c) 11.26 (d) 7.67
  12. 12.3.14 + 9.8 = ? (a) 12.84 (b) 12.94 (c) 13.04 (d) 4.12
  13. 13.Which is the greatest: 0.87, 0.792, 0.019, 0.8? (a) 0.87 (b) 0.792 (c) 0.019 (d) 0.8
  14. 14.Which is the smallest: 0.422, 0.036, 0.59, 0.5? (a) 0.422 (b) 0.036 (c) 0.59 (d) 0.5
  15. 15.1.79 + 5.1 = ? (a) 6.99 (b) 6.89 (c) 2.3 (d) 6.79
  16. 16.What is the value of the digit 3 in 38.724? (a) 3 (b) 0.3 (c) 0.03 (d) 30
  17. 17.5.27 + 3.3 = ? (a) 8.47 (b) 8.67 (c) 5.6 (d) 8.57
  18. 18.Which is the smallest: 0.5, 0.55, 0.486, 0.042? (a) 0.5 (b) 0.55 (c) 0.486 (d) 0.042
  19. 19.5.71 + 8.8 = ? (a) 14.41 (b) 14.61 (c) 14.51 (d) 6.59
  20. 20.Which is the greatest: 0.88, 0.056, 0.779, 0.8? (a) 0.88 (b) 0.056 (c) 0.779 (d) 0.8
  21. 21.4.86 + 4.9 = ? (a) 5.35 (b) 9.66 (c) 9.76 (d) 9.86
  22. 22.6.56 + 9.4 = ? (a) 15.86 (b) 16.06 (c) 15.96 (d) 7.5
  23. 23.Which is the smallest: 0.3, 0.024, 0.34, 0.223? (a) 0.3 (b) 0.024 (c) 0.34 (d) 0.223
  24. 24.2.05 + 7.9 = ? (a) 9.85 (b) 2.84 (c) 9.95 (d) 10.05
  25. 25.1.14 + 4.2 = ? (a) 5.44 (b) 5.34 (c) 1.56 (d) 5.24
  26. 26.Which is the smallest: 0.024, 0.8, 0.721, 0.86? (a) 0.024 (b) 0.8 (c) 0.721 (d) 0.86
  27. 27.Which is the greatest: 0.658, 0.034, 0.78, 0.7? (a) 0.658 (b) 0.034 (c) 0.78 (d) 0.7
  28. 28.Which is the greatest: 0.023, 0.87, 0.8, 0.716? (a) 0.023 (b) 0.87 (c) 0.8 (d) 0.716
  29. 29.2.72 + 2.1 = ? (a) 4.72 (b) 2.93 (c) 4.92 (d) 4.82
  30. 30.What is the value of the digit 2 in 32.598? (a) 0.02 (b) 20 (c) 0.2 (d) 2
  31. 31.Which is the greatest: 0.535, 0.6, 0.61, 0.022? (a) 0.535 (b) 0.6 (c) 0.61 (d) 0.022
  32. 32.Which is the greatest: 0.217, 0.3, 0.34, 0.086? (a) 0.217 (b) 0.3 (c) 0.34 (d) 0.086
  33. 33.Which is the greatest: 0.023, 0.144, 0.28, 0.2? (a) 0.023 (b) 0.144 (c) 0.28 (d) 0.2
  34. 34.Which is the greatest: 0.032, 0.6, 0.63, 0.568? (a) 0.032 (b) 0.6 (c) 0.63 (d) 0.568
  35. 35.Which is the greatest: 0.6, 0.63, 0.016, 0.584? (a) 0.6 (b) 0.63 (c) 0.016 (d) 0.584
  36. 36.Which is the smallest: 0.019, 0.88, 0.8, 0.712? (a) 0.019 (b) 0.88 (c) 0.8 (d) 0.712
  37. 37.8.15 + 1.5 = ? (a) 8.3 (b) 9.55 (c) 9.75 (d) 9.65
  38. 38.Which is the smallest: 0.082, 0.49, 0.4, 0.367? (a) 0.082 (b) 0.49 (c) 0.4 (d) 0.367
  39. 39.6.53 + 8.2 = ? (a) 14.73 (b) 14.63 (c) 7.35 (d) 14.83
  40. 40.8.45 + 5.1 = ? (a) 13.55 (b) 13.45 (c) 8.96 (d) 13.65

Answer key

  1. 0.012
  2. 12.91
  3. 0.016
  4. 0.88
  5. 0.56
  6. 0.01
  7. 11.25
  8. 15.51
  9. 5
  10. 0.044
  11. 11.36
  12. 12.94
  13. 0.87
  14. 0.036
  15. 6.89
  16. 30
  17. 8.57
  18. 0.042
  19. 14.51
  20. 0.88
  21. 9.76
  22. 15.96
  23. 0.024
  24. 9.95
  25. 5.34
  26. 0.024
  27. 0.78
  28. 0.87
  29. 4.82
  30. 2
  31. 0.61
  32. 0.34
  33. 0.28
  34. 0.63
  35. 0.63
  36. 0.019
  37. 9.65
  38. 0.082
  39. 14.73
  40. 13.55

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