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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 577 · 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 184 =
  2. 2.Half of 18 =
  3. 3.Double 41 =
  4. 4.Half of 188 =
  5. 5.Double 57 =
  6. 6.Half of 194 =
  7. 7.Double 24 =
  8. 8.Half of 116 =
  9. 9.Half of 104 =
  10. 10.Half of 58 =
  11. 11.Double 48 =
  12. 12.Double 51 =
  13. 13.Half of 182 =
  14. 14.Double 68 =
  15. 15.Half of 42 =
  16. 16.Double 37 =
  17. 17.Double 36 =
  18. 18.Half of 32 =
  19. 19.Half of 44 =
  20. 20.Double 22 =
  21. 21.Double 99 =
  22. 22.Half of 198 =
  23. 23.Half of 54 =
  24. 24.Double 98 =
  25. 25.Half of 172 =
  26. 26.Double 16 =
  27. 27.Half of 72 =
  28. 28.Half of 88 =
  29. 29.Double 85 =
  30. 30.Half of 196 =
  31. 31.Half of 176 =
  32. 32.Half of 168 =
  33. 33.Double 33 =
  34. 34.Double 21 =
  35. 35.Half of 156 =
  36. 36.Double 54 =
  37. 37.Half of 92 =
  38. 38.Half of 34 =
  39. 39.Half of 86 =
  40. 40.Double 55 =

Answer key

  1. 92
  2. 9
  3. 82
  4. 94
  5. 114
  6. 97
  7. 48
  8. 58
  9. 52
  10. 29
  11. 96
  12. 102
  13. 91
  14. 136
  15. 21
  16. 74
  17. 72
  18. 16
  19. 22
  20. 44
  21. 198
  22. 99
  23. 27
  24. 196
  25. 86
  26. 32
  27. 36
  28. 44
  29. 170
  30. 98
  31. 88
  32. 84
  33. 66
  34. 42
  35. 78
  36. 108
  37. 46
  38. 17
  39. 43
  40. 110

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