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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 719 · 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 156 =
  2. 2.Half of 112 =
  3. 3.Double 11 =
  4. 4.Half of 174 =
  5. 5.Double 68 =
  6. 6.Double 95 =
  7. 7.Double 89 =
  8. 8.Double 63 =
  9. 9.Half of 184 =
  10. 10.Double 46 =
  11. 11.Half of 116 =
  12. 12.Double 98 =
  13. 13.Double 84 =
  14. 14.Double 14 =
  15. 15.Double 85 =
  16. 16.Half of 32 =
  17. 17.Double 35 =
  18. 18.Double 94 =
  19. 19.Half of 82 =
  20. 20.Half of 102 =
  21. 21.Double 51 =
  22. 22.Half of 76 =
  23. 23.Double 36 =
  24. 24.Double 25 =
  25. 25.Half of 152 =
  26. 26.Half of 178 =
  27. 27.Double 91 =
  28. 28.Double 24 =
  29. 29.Double 43 =
  30. 30.Double 45 =
  31. 31.Double 96 =
  32. 32.Half of 154 =
  33. 33.Half of 12 =
  34. 34.Double 18 =
  35. 35.Half of 54 =
  36. 36.Half of 128 =
  37. 37.Double 47 =
  38. 38.Double 59 =
  39. 39.Half of 52 =
  40. 40.Double 54 =

Answer key

  1. 78
  2. 56
  3. 22
  4. 87
  5. 136
  6. 190
  7. 178
  8. 126
  9. 92
  10. 92
  11. 58
  12. 196
  13. 168
  14. 28
  15. 170
  16. 16
  17. 70
  18. 188
  19. 41
  20. 51
  21. 102
  22. 38
  23. 72
  24. 50
  25. 76
  26. 89
  27. 182
  28. 48
  29. 86
  30. 90
  31. 192
  32. 77
  33. 6
  34. 36
  35. 27
  36. 64
  37. 94
  38. 118
  39. 26
  40. 108

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