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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 432 · 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 182 =
  2. 2.Half of 166 =
  3. 3.Half of 86 =
  4. 4.Double 74 =
  5. 5.Half of 22 =
  6. 6.Double 26 =
  7. 7.Double 46 =
  8. 8.Half of 48 =
  9. 9.Half of 164 =
  10. 10.Half of 52 =
  11. 11.Half of 144 =
  12. 12.Double 72 =
  13. 13.Half of 124 =
  14. 14.Half of 122 =
  15. 15.Half of 142 =
  16. 16.Double 24 =
  17. 17.Double 35 =
  18. 18.Double 86 =
  19. 19.Double 65 =
  20. 20.Half of 82 =
  21. 21.Half of 132 =
  22. 22.Double 53 =
  23. 23.Half of 32 =
  24. 24.Half of 158 =
  25. 25.Half of 178 =
  26. 26.Double 17 =
  27. 27.Double 13 =
  28. 28.Half of 16 =
  29. 29.Double 94 =
  30. 30.Double 66 =
  31. 31.Half of 38 =
  32. 32.Half of 54 =
  33. 33.Double 36 =
  34. 34.Double 85 =
  35. 35.Double 34 =
  36. 36.Half of 154 =
  37. 37.Half of 56 =
  38. 38.Half of 42 =
  39. 39.Double 14 =
  40. 40.Double 91 =

Answer key

  1. 91
  2. 83
  3. 43
  4. 148
  5. 11
  6. 52
  7. 92
  8. 24
  9. 82
  10. 26
  11. 72
  12. 144
  13. 62
  14. 61
  15. 71
  16. 48
  17. 70
  18. 172
  19. 130
  20. 41
  21. 66
  22. 106
  23. 16
  24. 79
  25. 89
  26. 34
  27. 26
  28. 8
  29. 188
  30. 132
  31. 19
  32. 27
  33. 72
  34. 170
  35. 68
  36. 77
  37. 28
  38. 21
  39. 28
  40. 182

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