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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 685 · 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 148 =
  2. 2.Double 92 =
  3. 3.Half of 112 =
  4. 4.Half of 82 =
  5. 5.Half of 44 =
  6. 6.Half of 88 =
  7. 7.Half of 132 =
  8. 8.Half of 98 =
  9. 9.Half of 24 =
  10. 10.Double 99 =
  11. 11.Half of 54 =
  12. 12.Half of 136 =
  13. 13.Double 77 =
  14. 14.Half of 22 =
  15. 15.Double 31 =
  16. 16.Half of 42 =
  17. 17.Double 46 =
  18. 18.Double 71 =
  19. 19.Double 15 =
  20. 20.Double 84 =
  21. 21.Double 59 =
  22. 22.Double 75 =
  23. 23.Double 34 =
  24. 24.Double 24 =
  25. 25.Half of 184 =
  26. 26.Half of 114 =
  27. 27.Double 98 =
  28. 28.Double 38 =
  29. 29.Double 94 =
  30. 30.Double 57 =
  31. 31.Half of 14 =
  32. 32.Double 26 =
  33. 33.Half of 32 =
  34. 34.Half of 74 =
  35. 35.Half of 78 =
  36. 36.Double 18 =
  37. 37.Half of 68 =
  38. 38.Half of 164 =
  39. 39.Half of 58 =
  40. 40.Half of 172 =

Answer key

  1. 74
  2. 184
  3. 56
  4. 41
  5. 22
  6. 44
  7. 66
  8. 49
  9. 12
  10. 198
  11. 27
  12. 68
  13. 154
  14. 11
  15. 62
  16. 21
  17. 92
  18. 142
  19. 30
  20. 168
  21. 118
  22. 150
  23. 68
  24. 48
  25. 92
  26. 57
  27. 196
  28. 76
  29. 188
  30. 114
  31. 7
  32. 52
  33. 16
  34. 37
  35. 39
  36. 36
  37. 34
  38. 82
  39. 29
  40. 86

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