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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 530 · 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 42 =
  3. 3.Half of 184 =
  4. 4.Double 51 =
  5. 5.Half of 176 =
  6. 6.Double 97 =
  7. 7.Double 78 =
  8. 8.Half of 162 =
  9. 9.Half of 66 =
  10. 10.Half of 168 =
  11. 11.Double 32 =
  12. 12.Double 27 =
  13. 13.Double 88 =
  14. 14.Double 77 =
  15. 15.Double 74 =
  16. 16.Half of 84 =
  17. 17.Half of 72 =
  18. 18.Double 98 =
  19. 19.Double 18 =
  20. 20.Double 15 =
  21. 21.Half of 196 =
  22. 22.Double 38 =
  23. 23.Double 61 =
  24. 24.Half of 122 =
  25. 25.Half of 28 =
  26. 26.Double 68 =
  27. 27.Double 19 =
  28. 28.Double 83 =
  29. 29.Half of 102 =
  30. 30.Double 72 =
  31. 31.Double 13 =
  32. 32.Half of 148 =
  33. 33.Half of 178 =
  34. 34.Half of 186 =
  35. 35.Double 35 =
  36. 36.Double 45 =
  37. 37.Half of 98 =
  38. 38.Double 39 =
  39. 39.Double 92 =
  40. 40.Double 17 =

Answer key

  1. 56
  2. 21
  3. 92
  4. 102
  5. 88
  6. 194
  7. 156
  8. 81
  9. 33
  10. 84
  11. 64
  12. 54
  13. 176
  14. 154
  15. 148
  16. 42
  17. 36
  18. 196
  19. 36
  20. 30
  21. 98
  22. 76
  23. 122
  24. 61
  25. 14
  26. 136
  27. 38
  28. 166
  29. 51
  30. 144
  31. 26
  32. 74
  33. 89
  34. 93
  35. 70
  36. 90
  37. 49
  38. 78
  39. 184
  40. 34

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