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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 273 · 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.Double 24 =
  2. 2.Half of 32 =
  3. 3.Half of 118 =
  4. 4.Double 16 =
  5. 5.Half of 96 =
  6. 6.Double 72 =
  7. 7.Double 94 =
  8. 8.Half of 74 =
  9. 9.Double 26 =
  10. 10.Half of 124 =
  11. 11.Half of 82 =
  12. 12.Half of 18 =
  13. 13.Double 86 =
  14. 14.Half of 62 =
  15. 15.Double 65 =
  16. 16.Half of 182 =
  17. 17.Half of 192 =
  18. 18.Half of 154 =
  19. 19.Double 41 =
  20. 20.Half of 12 =
  21. 21.Half of 152 =
  22. 22.Double 71 =
  23. 23.Half of 58 =
  24. 24.Half of 66 =
  25. 25.Half of 198 =
  26. 26.Half of 128 =
  27. 27.Double 82 =
  28. 28.Double 14 =
  29. 29.Half of 26 =
  30. 30.Double 79 =
  31. 31.Half of 112 =
  32. 32.Double 45 =
  33. 33.Half of 102 =
  34. 34.Double 92 =
  35. 35.Half of 184 =
  36. 36.Double 96 =
  37. 37.Half of 88 =
  38. 38.Half of 142 =
  39. 39.Half of 176 =
  40. 40.Double 61 =

Answer key

  1. 48
  2. 16
  3. 59
  4. 32
  5. 48
  6. 144
  7. 188
  8. 37
  9. 52
  10. 62
  11. 41
  12. 9
  13. 172
  14. 31
  15. 130
  16. 91
  17. 96
  18. 77
  19. 82
  20. 6
  21. 76
  22. 142
  23. 29
  24. 33
  25. 99
  26. 64
  27. 164
  28. 28
  29. 13
  30. 158
  31. 56
  32. 90
  33. 51
  34. 184
  35. 92
  36. 192
  37. 44
  38. 71
  39. 88
  40. 122

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