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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 60 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Half of 142 =
  2. 2.Half of 68 =
  3. 3.Half of 48 =
  4. 4.Double 22 =
  5. 5.Half of 198 =
  6. 6.Half of 172 =
  7. 7.Double 26 =
  8. 8.Half of 76 =
  9. 9.Half of 32 =
  10. 10.Double 35 =
  11. 11.Double 45 =
  12. 12.Double 29 =
  13. 13.Half of 36 =
  14. 14.Double 79 =
  15. 15.Double 17 =
  16. 16.Half of 46 =
  17. 17.Double 23 =
  18. 18.Double 81 =
  19. 19.Half of 22 =
  20. 20.Half of 138 =
  21. 21.Double 36 =
  22. 22.Half of 144 =
  23. 23.Double 62 =
  24. 24.Half of 56 =
  25. 25.Half of 16 =
  26. 26.Double 44 =
  27. 27.Half of 74 =
  28. 28.Half of 62 =
  29. 29.Half of 94 =
  30. 30.Half of 86 =
  31. 31.Double 49 =
  32. 32.Double 77 =
  33. 33.Half of 14 =
  34. 34.Half of 54 =
  35. 35.Half of 58 =
  36. 36.Half of 28 =
  37. 37.Double 88 =
  38. 38.Half of 108 =
  39. 39.Half of 112 =
  40. 40.Double 78 =

Answer key

  1. 71
  2. 34
  3. 24
  4. 44
  5. 99
  6. 86
  7. 52
  8. 38
  9. 16
  10. 70
  11. 90
  12. 58
  13. 18
  14. 158
  15. 34
  16. 23
  17. 46
  18. 162
  19. 11
  20. 69
  21. 72
  22. 72
  23. 124
  24. 28
  25. 8
  26. 88
  27. 37
  28. 31
  29. 47
  30. 43
  31. 98
  32. 154
  33. 7
  34. 27
  35. 29
  36. 14
  37. 176
  38. 54
  39. 56
  40. 156

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