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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 294 · 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 178 =
  2. 2.Double 28 =
  3. 3.Half of 62 =
  4. 4.Half of 164 =
  5. 5.Half of 56 =
  6. 6.Half of 176 =
  7. 7.Double 46 =
  8. 8.Double 63 =
  9. 9.Double 22 =
  10. 10.Half of 116 =
  11. 11.Double 26 =
  12. 12.Half of 124 =
  13. 13.Half of 66 =
  14. 14.Double 38 =
  15. 15.Double 44 =
  16. 16.Double 84 =
  17. 17.Half of 134 =
  18. 18.Half of 172 =
  19. 19.Half of 98 =
  20. 20.Half of 106 =
  21. 21.Double 35 =
  22. 22.Double 49 =
  23. 23.Double 78 =
  24. 24.Half of 58 =
  25. 25.Half of 112 =
  26. 26.Half of 108 =
  27. 27.Double 55 =
  28. 28.Double 31 =
  29. 29.Half of 136 =
  30. 30.Double 19 =
  31. 31.Double 65 =
  32. 32.Half of 34 =
  33. 33.Half of 38 =
  34. 34.Half of 132 =
  35. 35.Double 52 =
  36. 36.Half of 192 =
  37. 37.Half of 82 =
  38. 38.Double 41 =
  39. 39.Half of 148 =
  40. 40.Double 95 =

Answer key

  1. 89
  2. 56
  3. 31
  4. 82
  5. 28
  6. 88
  7. 92
  8. 126
  9. 44
  10. 58
  11. 52
  12. 62
  13. 33
  14. 76
  15. 88
  16. 168
  17. 67
  18. 86
  19. 49
  20. 53
  21. 70
  22. 98
  23. 156
  24. 29
  25. 56
  26. 54
  27. 110
  28. 62
  29. 68
  30. 38
  31. 130
  32. 17
  33. 19
  34. 66
  35. 104
  36. 96
  37. 41
  38. 82
  39. 74
  40. 190

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