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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 607 · 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 112 =
  2. 2.Half of 116 =
  3. 3.Double 92 =
  4. 4.Double 84 =
  5. 5.Half of 32 =
  6. 6.Double 14 =
  7. 7.Double 52 =
  8. 8.Double 42 =
  9. 9.Half of 68 =
  10. 10.Half of 78 =
  11. 11.Double 63 =
  12. 12.Double 36 =
  13. 13.Half of 64 =
  14. 14.Double 89 =
  15. 15.Half of 66 =
  16. 16.Double 39 =
  17. 17.Double 76 =
  18. 18.Half of 22 =
  19. 19.Double 51 =
  20. 20.Half of 158 =
  21. 21.Half of 42 =
  22. 22.Half of 82 =
  23. 23.Half of 148 =
  24. 24.Double 58 =
  25. 25.Half of 56 =
  26. 26.Half of 132 =
  27. 27.Half of 48 =
  28. 28.Double 38 =
  29. 29.Half of 198 =
  30. 30.Double 53 =
  31. 31.Double 55 =
  32. 32.Double 25 =
  33. 33.Half of 152 =
  34. 34.Double 34 =
  35. 35.Double 96 =
  36. 36.Double 54 =
  37. 37.Double 37 =
  38. 38.Double 72 =
  39. 39.Double 75 =
  40. 40.Half of 192 =

Answer key

  1. 56
  2. 58
  3. 184
  4. 168
  5. 16
  6. 28
  7. 104
  8. 84
  9. 34
  10. 39
  11. 126
  12. 72
  13. 32
  14. 178
  15. 33
  16. 78
  17. 152
  18. 11
  19. 102
  20. 79
  21. 21
  22. 41
  23. 74
  24. 116
  25. 28
  26. 66
  27. 24
  28. 76
  29. 99
  30. 106
  31. 110
  32. 50
  33. 76
  34. 68
  35. 192
  36. 108
  37. 74
  38. 144
  39. 150
  40. 96

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