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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 147 · 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: 9, 45, 85, 81? (a) 9 (b) 45 (c) 85 (d) 81
  2. 2.Which number is the odd one out: 46, 43, 47, 59? (a) 46 (b) 43 (c) 47 (d) 59
  3. 3.Which number is the odd one out: 45, 27, 6, 90? (a) 45 (b) 27 (c) 6 (d) 90
  4. 4.Which number is the odd one out: 53, 11, 48, 89? (a) 53 (b) 11 (c) 48 (d) 89
  5. 5.Which number is the odd one out: 35, 82, 70, 95? (a) 35 (b) 82 (c) 70 (d) 95
  6. 6.Which number is the odd one out: 8, 88, 32, 83? (a) 8 (b) 88 (c) 32 (d) 83
  7. 7.Which number is the odd one out: 71, 18, 54, 99? (a) 71 (b) 18 (c) 54 (d) 99
  8. 8.Which number is the odd one out: 3, 71, 21, 41? (a) 3 (b) 71 (c) 21 (d) 41
  9. 9.Which number is the odd one out: 63, 71, 37, 31? (a) 63 (b) 71 (c) 37 (d) 31
  10. 10.Which number is the odd one out: 29, 97, 60, 17? (a) 29 (b) 97 (c) 60 (d) 17
  11. 11.Which number is the odd one out: 84, 96, 7, 8? (a) 84 (b) 96 (c) 7 (d) 8
  12. 12.Which number is the odd one out: 97, 59, 48, 43? (a) 97 (b) 59 (c) 48 (d) 43
  13. 13.Which number is the odd one out: 6, 9, 99, 81? (a) 6 (b) 9 (c) 99 (d) 81
  14. 14.Which number is the odd one out: 93, 79, 42, 23? (a) 93 (b) 79 (c) 42 (d) 23
  15. 15.Which number is the odd one out: 49, 7, 23, 71? (a) 49 (b) 7 (c) 23 (d) 71
  16. 16.Which number is the odd one out: 15, 10, 46, 75? (a) 15 (b) 10 (c) 46 (d) 75
  17. 17.Which number is the odd one out: 52, 23, 59, 67? (a) 52 (b) 23 (c) 59 (d) 67
  18. 18.Which number is the odd one out: 2, 13, 83, 14? (a) 2 (b) 13 (c) 83 (d) 14
  19. 19.Which number is the odd one out: 88, 90, 40, 32? (a) 88 (b) 90 (c) 40 (d) 32
  20. 20.Which number is the odd one out: 31, 10, 23, 83? (a) 31 (b) 10 (c) 23 (d) 83
  21. 21.Which number is the odd one out: 85, 55, 30, 24? (a) 85 (b) 55 (c) 30 (d) 24
  22. 22.Which number is the odd one out: 61, 97, 30, 17? (a) 61 (b) 97 (c) 30 (d) 17
  23. 23.Which number is the odd one out: 78, 43, 79, 83? (a) 78 (b) 43 (c) 79 (d) 83
  24. 24.Which number is the odd one out: 41, 68, 53, 19? (a) 41 (b) 68 (c) 53 (d) 19
  25. 25.Which number is the odd one out: 12, 71, 43, 11? (a) 12 (b) 71 (c) 43 (d) 11
  26. 26.Which number is the odd one out: 43, 79, 23, 76? (a) 43 (b) 79 (c) 23 (d) 76
  27. 27.Which number is the odd one out: 48, 8, 96, 34? (a) 48 (b) 8 (c) 96 (d) 34
  28. 28.Which number is the odd one out: 71, 32, 23, 31? (a) 71 (b) 32 (c) 23 (d) 31
  29. 29.Which number is the odd one out: 56, 2, 19, 61? (a) 56 (b) 2 (c) 19 (d) 61
  30. 30.Which number is the odd one out: 10, 17, 61, 71? (a) 10 (b) 17 (c) 61 (d) 71
  31. 31.Which number is the odd one out: 38, 59, 58, 34? (a) 38 (b) 59 (c) 58 (d) 34
  32. 32.Which number is the odd one out: 19, 7, 21, 59? (a) 19 (b) 7 (c) 21 (d) 59
  33. 33.Which number is the odd one out: 96, 71, 73, 83? (a) 96 (b) 71 (c) 73 (d) 83
  34. 34.Which number is the odd one out: 83, 23, 11, 66? (a) 83 (b) 23 (c) 11 (d) 66
  35. 35.Which number is the odd one out: 30, 5, 71, 29? (a) 30 (b) 5 (c) 71 (d) 29
  36. 36.Which number is the odd one out: 77, 14, 59, 19? (a) 77 (b) 14 (c) 59 (d) 19
  37. 37.Which number is the odd one out: 2, 73, 71, 72? (a) 2 (b) 73 (c) 71 (d) 72
  38. 38.Which number is the odd one out: 45, 16, 80, 64? (a) 45 (b) 16 (c) 80 (d) 64
  39. 39.Which number is the odd one out: 59, 12, 61, 2? (a) 59 (b) 12 (c) 61 (d) 2
  40. 40.Which number is the odd one out: 80, 11, 2, 41? (a) 80 (b) 11 (c) 2 (d) 41

Answer key

  1. 85
  2. 46
  3. 6
  4. 48
  5. 82
  6. 83
  7. 71
  8. 21
  9. 63
  10. 60
  11. 7
  12. 48
  13. 6
  14. 42
  15. 49
  16. 46
  17. 52
  18. 14
  19. 90
  20. 10
  21. 24
  22. 30
  23. 78
  24. 68
  25. 12
  26. 76
  27. 34
  28. 32
  29. 56
  30. 10
  31. 59
  32. 21
  33. 96
  34. 66
  35. 30
  36. 14
  37. 72
  38. 45
  39. 12
  40. 80

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