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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 280 · 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: 0.055, 0.6, 0.581, 0.61? (a) 0.055 (b) 0.6 (c) 0.581 (d) 0.61
  2. 2.What is the value of the digit 2 in 78.923? (a) 2 (b) 0.2 (c) 0.002 (d) 0.02
  3. 3.Which is the greatest: 0.34, 0.049, 0.289, 0.3? (a) 0.34 (b) 0.049 (c) 0.289 (d) 0.3
  4. 4.Which is the greatest: 0.462, 0.028, 0.5, 0.56? (a) 0.462 (b) 0.028 (c) 0.5 (d) 0.56
  5. 5.3.31 + 7.1 = ? (a) 10.31 (b) 10.41 (c) 10.51 (d) 4.02
  6. 6.2.08 + 8.2 = ? (a) 10.18 (b) 10.38 (c) 10.28 (d) 2.9
  7. 7.5.63 + 9.5 = ? (a) 15.13 (b) 6.58 (c) 15.23 (d) 15.03
  8. 8.7.16 + 1.6 = ? (a) 7.32 (b) 8.76 (c) 8.66 (d) 8.86
  9. 9.2.05 + 1.7 = ? (a) 3.75 (b) 3.65 (c) 2.22 (d) 3.85
  10. 10.Which is the greatest: 0.019, 0.84, 0.757, 0.8? (a) 0.019 (b) 0.84 (c) 0.757 (d) 0.8
  11. 11.Which is the greatest: 0.651, 0.7, 0.066, 0.75? (a) 0.651 (b) 0.7 (c) 0.066 (d) 0.75
  12. 12.Which is the greatest: 0.044, 0.727, 0.8, 0.84? (a) 0.044 (b) 0.727 (c) 0.8 (d) 0.84
  13. 13.3.11 + 5.9 = ? (a) 9.11 (b) 3.7 (c) 8.91 (d) 9.01
  14. 14.6.71 + 9.1 = ? (a) 7.62 (b) 15.81 (c) 15.91 (d) 15.71
  15. 15.2.52 + 5.5 = ? (a) 3.07 (b) 8.02 (c) 7.92 (d) 8.12
  16. 16.3.81 + 6.6 = ? (a) 4.47 (b) 10.51 (c) 10.31 (d) 10.41
  17. 17.Which is the smallest: 0.047, 0.238, 0.3, 0.37? (a) 0.047 (b) 0.238 (c) 0.3 (d) 0.37
  18. 18.What is the value of the digit 3 in 14.395? (a) 0.003 (b) 0.03 (c) 0.3 (d) 3
  19. 19.8.07 + 7.4 = ? (a) 15.37 (b) 15.47 (c) 8.81 (d) 15.57
  20. 20.Which is the smallest: 0.22, 0.2, 0.072, 0.127? (a) 0.22 (b) 0.2 (c) 0.072 (d) 0.127
  21. 21.Which is the smallest: 0.491, 0.55, 0.5, 0.023? (a) 0.491 (b) 0.55 (c) 0.5 (d) 0.023
  22. 22.Which is the greatest: 0.3, 0.278, 0.36, 0.093? (a) 0.3 (b) 0.278 (c) 0.36 (d) 0.093
  23. 23.5.67 + 8.1 = ? (a) 6.48 (b) 13.67 (c) 13.77 (d) 13.87
  24. 24.Which is the greatest: 0.263, 0.091, 0.3, 0.36? (a) 0.263 (b) 0.091 (c) 0.3 (d) 0.36
  25. 25.Which is the smallest: 0.7, 0.635, 0.79, 0.032? (a) 0.7 (b) 0.635 (c) 0.79 (d) 0.032
  26. 26.What is the value of the digit 2 in 21.743? (a) 0.2 (b) 2 (c) 0.02 (d) 20
  27. 27.Which is the greatest: 0.5, 0.51, 0.413, 0.064? (a) 0.5 (b) 0.51 (c) 0.413 (d) 0.064
  28. 28.What is the value of the digit 8 in 89.152? (a) 8 (b) 0.8 (c) 0.08 (d) 80
  29. 29.What is the value of the digit 5 in 15.746? (a) 0.05 (b) 0.5 (c) 5 (d) 50
  30. 30.1.66 + 2.9 = ? (a) 4.66 (b) 4.46 (c) 1.95 (d) 4.56
  31. 31.Which is the greatest: 0.012, 0.3, 0.31, 0.276? (a) 0.012 (b) 0.3 (c) 0.31 (d) 0.276
  32. 32.Which is the smallest: 0.7, 0.634, 0.75, 0.098? (a) 0.7 (b) 0.634 (c) 0.75 (d) 0.098
  33. 33.8.97 + 9.9 = ? (a) 18.77 (b) 18.87 (c) 9.96 (d) 18.97
  34. 34.What is the value of the digit 4 in 42.689? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  35. 35.What is the value of the digit 3 in 93.247? (a) 30 (b) 3 (c) 0.03 (d) 0.3
  36. 36.What is the value of the digit 2 in 95.382? (a) 0.2 (b) 2 (c) 0.02 (d) 0.002
  37. 37.Which is the smallest: 0.255, 0.3, 0.031, 0.31? (a) 0.255 (b) 0.3 (c) 0.031 (d) 0.31
  38. 38.What is the value of the digit 5 in 75.329? (a) 0.05 (b) 0.5 (c) 50 (d) 5
  39. 39.Which is the smallest: 0.215, 0.3, 0.052, 0.31? (a) 0.215 (b) 0.3 (c) 0.052 (d) 0.31
  40. 40.Which is the smallest: 0.032, 0.127, 0.2, 0.25? (a) 0.032 (b) 0.127 (c) 0.2 (d) 0.25

Answer key

  1. 0.61
  2. 0.02
  3. 0.34
  4. 0.56
  5. 10.41
  6. 10.28
  7. 15.13
  8. 8.76
  9. 3.75
  10. 0.84
  11. 0.75
  12. 0.84
  13. 9.01
  14. 15.81
  15. 8.02
  16. 10.41
  17. 0.047
  18. 0.3
  19. 15.47
  20. 0.072
  21. 0.023
  22. 0.36
  23. 13.77
  24. 0.36
  25. 0.032
  26. 20
  27. 0.51
  28. 80
  29. 5
  30. 4.56
  31. 0.31
  32. 0.098
  33. 18.87
  34. 40
  35. 3
  36. 0.002
  37. 0.031
  38. 5
  39. 0.052
  40. 0.032

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