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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 296 · 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 12 =
  2. 2.Double 65 =
  3. 3.Half of 88 =
  4. 4.Half of 176 =
  5. 5.Double 36 =
  6. 6.Half of 184 =
  7. 7.Half of 38 =
  8. 8.Double 85 =
  9. 9.Double 51 =
  10. 10.Half of 142 =
  11. 11.Double 21 =
  12. 12.Double 81 =
  13. 13.Half of 152 =
  14. 14.Half of 44 =
  15. 15.Double 22 =
  16. 16.Half of 54 =
  17. 17.Double 91 =
  18. 18.Double 47 =
  19. 19.Half of 52 =
  20. 20.Double 46 =
  21. 21.Half of 192 =
  22. 22.Double 67 =
  23. 23.Half of 42 =
  24. 24.Double 88 =
  25. 25.Half of 28 =
  26. 26.Double 89 =
  27. 27.Double 74 =
  28. 28.Half of 64 =
  29. 29.Double 19 =
  30. 30.Half of 154 =
  31. 31.Half of 84 =
  32. 32.Half of 122 =
  33. 33.Double 83 =
  34. 34.Half of 58 =
  35. 35.Double 79 =
  36. 36.Half of 168 =
  37. 37.Double 72 =
  38. 38.Half of 112 =
  39. 39.Half of 126 =
  40. 40.Half of 92 =

Answer key

  1. 6
  2. 130
  3. 44
  4. 88
  5. 72
  6. 92
  7. 19
  8. 170
  9. 102
  10. 71
  11. 42
  12. 162
  13. 76
  14. 22
  15. 44
  16. 27
  17. 182
  18. 94
  19. 26
  20. 92
  21. 96
  22. 134
  23. 21
  24. 176
  25. 14
  26. 178
  27. 148
  28. 32
  29. 38
  30. 77
  31. 42
  32. 61
  33. 166
  34. 29
  35. 158
  36. 84
  37. 144
  38. 56
  39. 63
  40. 46

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