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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 327 · 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 72 =
  2. 2.Half of 144 =
  3. 3.Half of 128 =
  4. 4.Double 74 =
  5. 5.Half of 36 =
  6. 6.Half of 26 =
  7. 7.Double 42 =
  8. 8.Double 31 =
  9. 9.Half of 48 =
  10. 10.Double 89 =
  11. 11.Half of 96 =
  12. 12.Double 32 =
  13. 13.Double 26 =
  14. 14.Half of 32 =
  15. 15.Half of 56 =
  16. 16.Double 83 =
  17. 17.Half of 78 =
  18. 18.Double 25 =
  19. 19.Double 85 =
  20. 20.Half of 44 =
  21. 21.Half of 192 =
  22. 22.Double 49 =
  23. 23.Double 39 =
  24. 24.Half of 98 =
  25. 25.Half of 156 =
  26. 26.Half of 142 =
  27. 27.Half of 158 =
  28. 28.Half of 38 =
  29. 29.Half of 42 =
  30. 30.Half of 68 =
  31. 31.Half of 182 =
  32. 32.Double 51 =
  33. 33.Half of 52 =
  34. 34.Double 43 =
  35. 35.Half of 152 =
  36. 36.Half of 24 =
  37. 37.Half of 132 =
  38. 38.Double 79 =
  39. 39.Double 91 =
  40. 40.Double 98 =

Answer key

  1. 36
  2. 72
  3. 64
  4. 148
  5. 18
  6. 13
  7. 84
  8. 62
  9. 24
  10. 178
  11. 48
  12. 64
  13. 52
  14. 16
  15. 28
  16. 166
  17. 39
  18. 50
  19. 170
  20. 22
  21. 96
  22. 98
  23. 78
  24. 49
  25. 78
  26. 71
  27. 79
  28. 19
  29. 21
  30. 34
  31. 91
  32. 102
  33. 26
  34. 86
  35. 76
  36. 12
  37. 66
  38. 158
  39. 182
  40. 196

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