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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 666 · 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 192 =
  2. 2.Half of 148 =
  3. 3.Double 93 =
  4. 4.Half of 72 =
  5. 5.Double 13 =
  6. 6.Double 67 =
  7. 7.Half of 64 =
  8. 8.Double 39 =
  9. 9.Half of 82 =
  10. 10.Half of 84 =
  11. 11.Double 76 =
  12. 12.Double 84 =
  13. 13.Double 88 =
  14. 14.Half of 88 =
  15. 15.Double 89 =
  16. 16.Half of 164 =
  17. 17.Double 32 =
  18. 18.Double 83 =
  19. 19.Half of 138 =
  20. 20.Double 18 =
  21. 21.Double 63 =
  22. 22.Double 98 =
  23. 23.Double 71 =
  24. 24.Double 61 =
  25. 25.Half of 184 =
  26. 26.Double 68 =
  27. 27.Half of 198 =
  28. 28.Double 74 =
  29. 29.Double 56 =
  30. 30.Half of 54 =
  31. 31.Half of 32 =
  32. 32.Half of 86 =
  33. 33.Half of 134 =
  34. 34.Double 54 =
  35. 35.Double 59 =
  36. 36.Double 87 =
  37. 37.Double 75 =
  38. 38.Double 57 =
  39. 39.Double 21 =
  40. 40.Half of 136 =

Answer key

  1. 96
  2. 74
  3. 186
  4. 36
  5. 26
  6. 134
  7. 32
  8. 78
  9. 41
  10. 42
  11. 152
  12. 168
  13. 176
  14. 44
  15. 178
  16. 82
  17. 64
  18. 166
  19. 69
  20. 36
  21. 126
  22. 196
  23. 142
  24. 122
  25. 92
  26. 136
  27. 99
  28. 148
  29. 112
  30. 27
  31. 16
  32. 43
  33. 67
  34. 108
  35. 118
  36. 174
  37. 150
  38. 114
  39. 42
  40. 68

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