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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 174 · 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 11 =
  2. 2.Double 81 =
  3. 3.Half of 188 =
  4. 4.Double 17 =
  5. 5.Double 31 =
  6. 6.Double 19 =
  7. 7.Double 63 =
  8. 8.Half of 74 =
  9. 9.Half of 116 =
  10. 10.Half of 22 =
  11. 11.Half of 172 =
  12. 12.Double 52 =
  13. 13.Half of 52 =
  14. 14.Half of 104 =
  15. 15.Half of 72 =
  16. 16.Half of 198 =
  17. 17.Half of 138 =
  18. 18.Double 59 =
  19. 19.Double 93 =
  20. 20.Half of 132 =
  21. 21.Half of 82 =
  22. 22.Half of 178 =
  23. 23.Half of 152 =
  24. 24.Double 24 =
  25. 25.Half of 76 =
  26. 26.Half of 16 =
  27. 27.Double 16 =
  28. 28.Double 96 =
  29. 29.Double 83 =
  30. 30.Double 72 =
  31. 31.Half of 64 =
  32. 32.Half of 158 =
  33. 33.Half of 126 =
  34. 34.Half of 148 =
  35. 35.Half of 44 =
  36. 36.Double 58 =
  37. 37.Double 86 =
  38. 38.Double 43 =
  39. 39.Half of 26 =
  40. 40.Double 35 =

Answer key

  1. 22
  2. 162
  3. 94
  4. 34
  5. 62
  6. 38
  7. 126
  8. 37
  9. 58
  10. 11
  11. 86
  12. 104
  13. 26
  14. 52
  15. 36
  16. 99
  17. 69
  18. 118
  19. 186
  20. 66
  21. 41
  22. 89
  23. 76
  24. 48
  25. 38
  26. 8
  27. 32
  28. 192
  29. 166
  30. 144
  31. 32
  32. 79
  33. 63
  34. 74
  35. 22
  36. 116
  37. 172
  38. 86
  39. 13
  40. 70

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