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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 34 · 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.Double 76 =
  2. 2.Half of 134 =
  3. 3.Double 56 =
  4. 4.Half of 182 =
  5. 5.Double 83 =
  6. 6.Half of 164 =
  7. 7.Double 58 =
  8. 8.Double 31 =
  9. 9.Double 79 =
  10. 10.Double 18 =
  11. 11.Half of 26 =
  12. 12.Double 33 =
  13. 13.Double 59 =
  14. 14.Half of 142 =
  15. 15.Half of 146 =
  16. 16.Double 81 =
  17. 17.Half of 62 =
  18. 18.Half of 162 =
  19. 19.Half of 52 =
  20. 20.Double 77 =
  21. 21.Double 69 =
  22. 22.Double 39 =
  23. 23.Half of 96 =
  24. 24.Half of 12 =
  25. 25.Double 25 =
  26. 26.Half of 24 =
  27. 27.Double 98 =
  28. 28.Half of 194 =
  29. 29.Double 16 =
  30. 30.Half of 42 =
  31. 31.Double 93 =
  32. 32.Double 86 =
  33. 33.Half of 144 =
  34. 34.Half of 58 =
  35. 35.Half of 56 =
  36. 36.Double 23 =
  37. 37.Half of 106 =
  38. 38.Half of 168 =
  39. 39.Half of 122 =
  40. 40.Half of 82 =

Answer key

  1. 152
  2. 67
  3. 112
  4. 91
  5. 166
  6. 82
  7. 116
  8. 62
  9. 158
  10. 36
  11. 13
  12. 66
  13. 118
  14. 71
  15. 73
  16. 162
  17. 31
  18. 81
  19. 26
  20. 154
  21. 138
  22. 78
  23. 48
  24. 6
  25. 50
  26. 12
  27. 196
  28. 97
  29. 32
  30. 21
  31. 186
  32. 172
  33. 72
  34. 29
  35. 28
  36. 46
  37. 53
  38. 84
  39. 61
  40. 41

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