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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 88 · 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 32 =
  2. 2.Half of 124 =
  3. 3.Half of 72 =
  4. 4.Half of 24 =
  5. 5.Half of 102 =
  6. 6.Double 62 =
  7. 7.Half of 18 =
  8. 8.Double 79 =
  9. 9.Half of 74 =
  10. 10.Double 34 =
  11. 11.Half of 112 =
  12. 12.Double 83 =
  13. 13.Half of 188 =
  14. 14.Double 46 =
  15. 15.Double 17 =
  16. 16.Double 51 =
  17. 17.Double 76 =
  18. 18.Double 92 =
  19. 19.Double 93 =
  20. 20.Double 64 =
  21. 21.Half of 58 =
  22. 22.Half of 168 =
  23. 23.Half of 142 =
  24. 24.Half of 22 =
  25. 25.Double 11 =
  26. 26.Half of 38 =
  27. 27.Double 35 =
  28. 28.Half of 114 =
  29. 29.Double 23 =
  30. 30.Half of 92 =
  31. 31.Double 41 =
  32. 32.Half of 144 =
  33. 33.Half of 36 =
  34. 34.Double 78 =
  35. 35.Double 33 =
  36. 36.Double 77 =
  37. 37.Double 49 =
  38. 38.Double 55 =
  39. 39.Half of 118 =
  40. 40.Half of 86 =

Answer key

  1. 16
  2. 62
  3. 36
  4. 12
  5. 51
  6. 124
  7. 9
  8. 158
  9. 37
  10. 68
  11. 56
  12. 166
  13. 94
  14. 92
  15. 34
  16. 102
  17. 152
  18. 184
  19. 186
  20. 128
  21. 29
  22. 84
  23. 71
  24. 11
  25. 22
  26. 19
  27. 70
  28. 57
  29. 46
  30. 46
  31. 82
  32. 72
  33. 18
  34. 156
  35. 66
  36. 154
  37. 98
  38. 110
  39. 59
  40. 43

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