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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 811 · 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: 0.38, 0.056, 0.286, 0.3? (a) 0.38 (b) 0.056 (c) 0.286 (d) 0.3
  2. 2.Which is the greatest: 0.8, 0.088, 0.82, 0.732? (a) 0.8 (b) 0.088 (c) 0.82 (d) 0.732
  3. 3.Which is the greatest: 0.89, 0.078, 0.736, 0.8? (a) 0.89 (b) 0.078 (c) 0.736 (d) 0.8
  4. 4.Which is the greatest: 0.21, 0.2, 0.092, 0.127? (a) 0.21 (b) 0.2 (c) 0.092 (d) 0.127
  5. 5.Which is the greatest: 0.463, 0.51, 0.018, 0.5? (a) 0.463 (b) 0.51 (c) 0.018 (d) 0.5
  6. 6.What is the value of the digit 3 in 63.154? (a) 0.3 (b) 3 (c) 30 (d) 0.03
  7. 7.3.47 + 5.1 = ? (a) 8.67 (b) 8.47 (c) 3.98 (d) 8.57
  8. 8.6.66 + 7.7 = ? (a) 14.46 (b) 7.43 (c) 14.26 (d) 14.36
  9. 9.Which is the smallest: 0.8, 0.81, 0.744, 0.046? (a) 0.8 (b) 0.81 (c) 0.744 (d) 0.046
  10. 10.Which is the smallest: 0.61, 0.6, 0.092, 0.539? (a) 0.61 (b) 0.6 (c) 0.092 (d) 0.539
  11. 11.Which is the greatest: 0.424, 0.062, 0.51, 0.5? (a) 0.424 (b) 0.062 (c) 0.51 (d) 0.5
  12. 12.1.37 + 1.6 = ? (a) 2.97 (b) 2.87 (c) 3.07 (d) 1.53
  13. 13.8.97 + 9.7 = ? (a) 18.67 (b) 18.57 (c) 18.77 (d) 9.94
  14. 14.7.88 + 9.7 = ? (a) 8.85 (b) 17.68 (c) 17.48 (d) 17.58
  15. 15.Which is the smallest: 0.87, 0.779, 0.8, 0.079? (a) 0.87 (b) 0.779 (c) 0.8 (d) 0.079
  16. 16.6.59 + 3.2 = ? (a) 9.89 (b) 6.91 (c) 9.69 (d) 9.79
  17. 17.What is the value of the digit 7 in 21.479? (a) 7 (b) 0.7 (c) 0.007 (d) 0.07
  18. 18.4.18 + 1.9 = ? (a) 6.08 (b) 5.98 (c) 6.18 (d) 4.37
  19. 19.1.05 + 7.4 = ? (a) 8.45 (b) 8.35 (c) 1.79 (d) 8.55
  20. 20.4.02 + 5.5 = ? (a) 9.62 (b) 9.42 (c) 9.52 (d) 4.57
  21. 21.What is the value of the digit 7 in 74.186? (a) 0.07 (b) 70 (c) 0.7 (d) 7
  22. 22.2.71 + 2.7 = ? (a) 5.51 (b) 5.41 (c) 2.98 (d) 5.31
  23. 23.1.44 + 3.5 = ? (a) 4.94 (b) 4.84 (c) 1.79 (d) 5.04
  24. 24.What is the value of the digit 8 in 17.824? (a) 0.008 (b) 0.08 (c) 0.8 (d) 8
  25. 25.What is the value of the digit 4 in 53.741? (a) 0.4 (b) 0.04 (c) 0.004 (d) 4
  26. 26.1.84 + 4.1 = ? (a) 5.94 (b) 2.25 (c) 6.04 (d) 5.84
  27. 27.What is the value of the digit 6 in 24.816? (a) 0.006 (b) 6 (c) 0.6 (d) 0.06
  28. 28.What is the value of the digit 9 in 41.829? (a) 0.09 (b) 9 (c) 0.009 (d) 0.9
  29. 29.Which is the smallest: 0.32, 0.031, 0.289, 0.3? (a) 0.32 (b) 0.031 (c) 0.289 (d) 0.3
  30. 30.2.03 + 9.8 = ? (a) 11.93 (b) 3.01 (c) 11.73 (d) 11.83
  31. 31.What is the value of the digit 3 in 31.928? (a) 0.03 (b) 3 (c) 30 (d) 0.3
  32. 32.2.51 + 6.9 = ? (a) 3.2 (b) 9.31 (c) 9.41 (d) 9.51
  33. 33.Which is the greatest: 0.692, 0.74, 0.7, 0.014? (a) 0.692 (b) 0.74 (c) 0.7 (d) 0.014
  34. 34.What is the value of the digit 4 in 14.372? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  35. 35.Which is the smallest: 0.3, 0.228, 0.012, 0.33? (a) 0.3 (b) 0.228 (c) 0.012 (d) 0.33
  36. 36.8.43 + 9.7 = ? (a) 18.23 (b) 18.13 (c) 18.03 (d) 9.4
  37. 37.What is the value of the digit 5 in 21.753? (a) 5 (b) 0.05 (c) 0.5 (d) 0.005
  38. 38.Which is the greatest: 0.171, 0.22, 0.2, 0.024? (a) 0.171 (b) 0.22 (c) 0.2 (d) 0.024
  39. 39.8.31 + 5.2 = ? (a) 8.83 (b) 13.41 (c) 13.51 (d) 13.61
  40. 40.7.43 + 7.6 = ? (a) 15.13 (b) 15.03 (c) 8.19 (d) 14.93

Answer key

  1. 0.056
  2. 0.82
  3. 0.89
  4. 0.21
  5. 0.51
  6. 3
  7. 8.57
  8. 14.36
  9. 0.046
  10. 0.092
  11. 0.51
  12. 2.97
  13. 18.67
  14. 17.58
  15. 0.079
  16. 9.79
  17. 0.07
  18. 6.08
  19. 8.45
  20. 9.52
  21. 70
  22. 5.41
  23. 4.94
  24. 0.8
  25. 0.04
  26. 5.94
  27. 0.006
  28. 0.009
  29. 0.031
  30. 11.83
  31. 30
  32. 9.41
  33. 0.74
  34. 4
  35. 0.012
  36. 18.13
  37. 0.05
  38. 0.22
  39. 13.51
  40. 15.03

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