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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 80 · 40 questions
TalentJR

How to think it through (Test every number): Check each number for a property: even/odd, prime (only two factors), square (4, 9, 16 …), or a multiple of 3, 4, 5 … 9. Find the property that three numbers share and one does not. Make sure no other property points at a different number — then that one is the odd one out.

NameDateTime takenScore ___ / 40
  1. 1.Which number is the odd one out: 48, 18, 80, 40? (a) 48 (b) 18 (c) 80 (d) 40
  2. 2.Which number is the odd one out: 89, 37, 43, 69? (a) 89 (b) 37 (c) 43 (d) 69
  3. 3.Which number is the odd one out: 43, 29, 21, 79? (a) 43 (b) 29 (c) 21 (d) 79
  4. 4.Which number is the odd one out: 73, 61, 37, 9? (a) 73 (b) 61 (c) 37 (d) 9
  5. 5.Which number is the odd one out: 89, 10, 5, 13? (a) 89 (b) 10 (c) 5 (d) 13
  6. 6.Which number is the odd one out: 17, 5, 35, 67? (a) 17 (b) 5 (c) 35 (d) 67
  7. 7.Which number is the odd one out: 19, 90, 53, 11? (a) 19 (b) 90 (c) 53 (d) 11
  8. 8.Which number is the odd one out: 4, 37, 97, 17? (a) 4 (b) 37 (c) 97 (d) 17
  9. 9.Which number is the odd one out: 2, 5, 20, 19? (a) 2 (b) 5 (c) 20 (d) 19
  10. 10.Which number is the odd one out: 23, 87, 54, 31? (a) 23 (b) 87 (c) 54 (d) 31
  11. 11.Which number is the odd one out: 23, 19, 2, 8? (a) 23 (b) 19 (c) 2 (d) 8
  12. 12.Which number is the odd one out: 81, 25, 9, 85? (a) 81 (b) 25 (c) 9 (d) 85
  13. 13.Which number is the odd one out: 43, 5, 55, 29? (a) 43 (b) 5 (c) 55 (d) 29
  14. 14.Which number is the odd one out: 19, 13, 40, 71? (a) 19 (b) 13 (c) 40 (d) 71
  15. 15.Which number is the odd one out: 16, 8, 25, 32? (a) 16 (b) 8 (c) 25 (d) 32
  16. 16.Which number is the odd one out: 11, 74, 46, 82? (a) 11 (b) 74 (c) 46 (d) 82
  17. 17.Which number is the odd one out: 41, 13, 17, 35? (a) 41 (b) 13 (c) 17 (d) 35
  18. 18.Which number is the odd one out: 17, 71, 21, 59? (a) 17 (b) 71 (c) 21 (d) 59
  19. 19.Which number is the odd one out: 17, 75, 59, 73? (a) 17 (b) 75 (c) 59 (d) 73
  20. 20.Which number is the odd one out: 16, 4, 64, 75? (a) 16 (b) 4 (c) 64 (d) 75
  21. 21.Which number is the odd one out: 48, 24, 96, 54? (a) 48 (b) 24 (c) 96 (d) 54
  22. 22.Which number is the odd one out: 79, 11, 93, 61? (a) 79 (b) 11 (c) 93 (d) 61
  23. 23.Which number is the odd one out: 61, 83, 21, 71? (a) 61 (b) 83 (c) 21 (d) 71
  24. 24.Which number is the odd one out: 88, 8, 56, 49? (a) 88 (b) 8 (c) 56 (d) 49
  25. 25.Which number is the odd one out: 89, 73, 7, 98? (a) 89 (b) 73 (c) 7 (d) 98
  26. 26.Which number is the odd one out: 67, 53, 29, 56? (a) 67 (b) 53 (c) 29 (d) 56
  27. 27.Which number is the odd one out: 13, 85, 89, 31? (a) 13 (b) 85 (c) 89 (d) 31
  28. 28.Which number is the odd one out: 47, 5, 13, 15? (a) 47 (b) 5 (c) 13 (d) 15
  29. 29.Which number is the odd one out: 2, 41, 61, 36? (a) 2 (b) 41 (c) 61 (d) 36
  30. 30.Which number is the odd one out: 52, 24, 78, 32? (a) 52 (b) 24 (c) 78 (d) 32
  31. 31.Which number is the odd one out: 50, 65, 72, 55? (a) 50 (b) 65 (c) 72 (d) 55
  32. 32.Which number is the odd one out: 24, 72, 9, 48? (a) 24 (b) 72 (c) 9 (d) 48
  33. 33.Which number is the odd one out: 48, 68, 77, 96? (a) 48 (b) 68 (c) 77 (d) 96
  34. 34.Which number is the odd one out: 43, 23, 83, 75? (a) 43 (b) 23 (c) 83 (d) 75
  35. 35.Which number is the odd one out: 24, 31, 80, 60? (a) 24 (b) 31 (c) 80 (d) 60
  36. 36.Which number is the odd one out: 88, 33, 52, 8? (a) 88 (b) 33 (c) 52 (d) 8
  37. 37.Which number is the odd one out: 97, 29, 13, 46? (a) 97 (b) 29 (c) 13 (d) 46
  38. 38.Which number is the odd one out: 11, 47, 94, 43? (a) 11 (b) 47 (c) 94 (d) 43
  39. 39.Which number is the odd one out: 5, 70, 67, 89? (a) 5 (b) 70 (c) 67 (d) 89
  40. 40.Which number is the odd one out: 70, 56, 32, 8? (a) 70 (b) 56 (c) 32 (d) 8

Answer key

  1. 18
  2. 69
  3. 21
  4. 9
  5. 10
  6. 35
  7. 90
  8. 4
  9. 20
  10. 54
  11. 8
  12. 85
  13. 55
  14. 40
  15. 25
  16. 11
  17. 35
  18. 21
  19. 75
  20. 75
  21. 54
  22. 93
  23. 21
  24. 49
  25. 98
  26. 56
  27. 85
  28. 15
  29. 36
  30. 78
  31. 72
  32. 9
  33. 77
  34. 75
  35. 31
  36. 33
  37. 46
  38. 94
  39. 70
  40. 70

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