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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 642 · 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.Double 31 =
  3. 3.Double 24 =
  4. 4.Double 64 =
  5. 5.Half of 84 =
  6. 6.Double 78 =
  7. 7.Double 53 =
  8. 8.Double 51 =
  9. 9.Half of 22 =
  10. 10.Half of 74 =
  11. 11.Double 49 =
  12. 12.Half of 44 =
  13. 13.Half of 72 =
  14. 14.Double 28 =
  15. 15.Half of 116 =
  16. 16.Double 32 =
  17. 17.Double 91 =
  18. 18.Half of 132 =
  19. 19.Double 67 =
  20. 20.Double 86 =
  21. 21.Double 27 =
  22. 22.Half of 178 =
  23. 23.Half of 192 =
  24. 24.Half of 156 =
  25. 25.Double 47 =
  26. 26.Half of 164 =
  27. 27.Half of 54 =
  28. 28.Double 11 =
  29. 29.Half of 194 =
  30. 30.Double 43 =
  31. 31.Half of 166 =
  32. 32.Half of 36 =
  33. 33.Double 93 =
  34. 34.Double 61 =
  35. 35.Half of 144 =
  36. 36.Double 72 =
  37. 37.Half of 52 =
  38. 38.Double 35 =
  39. 39.Double 85 =
  40. 40.Double 92 =

Answer key

  1. 91
  2. 62
  3. 48
  4. 128
  5. 42
  6. 156
  7. 106
  8. 102
  9. 11
  10. 37
  11. 98
  12. 22
  13. 36
  14. 56
  15. 58
  16. 64
  17. 182
  18. 66
  19. 134
  20. 172
  21. 54
  22. 89
  23. 96
  24. 78
  25. 94
  26. 82
  27. 27
  28. 22
  29. 97
  30. 86
  31. 83
  32. 18
  33. 186
  34. 122
  35. 72
  36. 144
  37. 26
  38. 70
  39. 170
  40. 184

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