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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 548 · 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 46 =
  2. 2.Double 33 =
  3. 3.Double 74 =
  4. 4.Double 75 =
  5. 5.Half of 92 =
  6. 6.Half of 174 =
  7. 7.Double 37 =
  8. 8.Half of 56 =
  9. 9.Half of 12 =
  10. 10.Half of 198 =
  11. 11.Double 26 =
  12. 12.Half of 96 =
  13. 13.Half of 32 =
  14. 14.Half of 36 =
  15. 15.Half of 26 =
  16. 16.Half of 88 =
  17. 17.Double 92 =
  18. 18.Half of 42 =
  19. 19.Half of 44 =
  20. 20.Double 38 =
  21. 21.Double 63 =
  22. 22.Half of 62 =
  23. 23.Half of 148 =
  24. 24.Half of 94 =
  25. 25.Double 54 =
  26. 26.Half of 38 =
  27. 27.Half of 22 =
  28. 28.Half of 84 =
  29. 29.Half of 74 =
  30. 30.Half of 178 =
  31. 31.Double 83 =
  32. 32.Half of 176 =
  33. 33.Double 31 =
  34. 34.Double 65 =
  35. 35.Double 39 =
  36. 36.Double 21 =
  37. 37.Double 86 =
  38. 38.Double 49 =
  39. 39.Double 68 =
  40. 40.Double 82 =

Answer key

  1. 92
  2. 66
  3. 148
  4. 150
  5. 46
  6. 87
  7. 74
  8. 28
  9. 6
  10. 99
  11. 52
  12. 48
  13. 16
  14. 18
  15. 13
  16. 44
  17. 184
  18. 21
  19. 22
  20. 76
  21. 126
  22. 31
  23. 74
  24. 47
  25. 108
  26. 19
  27. 11
  28. 42
  29. 37
  30. 89
  31. 166
  32. 88
  33. 62
  34. 130
  35. 78
  36. 42
  37. 172
  38. 98
  39. 136
  40. 164

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