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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 734 · 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 82 =
  2. 2.Half of 22 =
  3. 3.Double 96 =
  4. 4.Double 11 =
  5. 5.Double 66 =
  6. 6.Double 29 =
  7. 7.Half of 158 =
  8. 8.Double 79 =
  9. 9.Half of 42 =
  10. 10.Double 28 =
  11. 11.Double 34 =
  12. 12.Double 13 =
  13. 13.Half of 112 =
  14. 14.Double 56 =
  15. 15.Half of 136 =
  16. 16.Double 86 =
  17. 17.Double 23 =
  18. 18.Half of 38 =
  19. 19.Double 75 =
  20. 20.Double 97 =
  21. 21.Half of 76 =
  22. 22.Double 27 =
  23. 23.Half of 92 =
  24. 24.Half of 16 =
  25. 25.Double 54 =
  26. 26.Double 95 =
  27. 27.Double 62 =
  28. 28.Half of 172 =
  29. 29.Double 82 =
  30. 30.Half of 198 =
  31. 31.Double 26 =
  32. 32.Double 35 =
  33. 33.Double 32 =
  34. 34.Double 78 =
  35. 35.Half of 56 =
  36. 36.Half of 184 =
  37. 37.Half of 18 =
  38. 38.Double 45 =
  39. 39.Double 52 =
  40. 40.Double 84 =

Answer key

  1. 41
  2. 11
  3. 192
  4. 22
  5. 132
  6. 58
  7. 79
  8. 158
  9. 21
  10. 56
  11. 68
  12. 26
  13. 56
  14. 112
  15. 68
  16. 172
  17. 46
  18. 19
  19. 150
  20. 194
  21. 38
  22. 54
  23. 46
  24. 8
  25. 108
  26. 190
  27. 124
  28. 86
  29. 164
  30. 99
  31. 52
  32. 70
  33. 64
  34. 156
  35. 28
  36. 92
  37. 9
  38. 90
  39. 104
  40. 168

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