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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 441 · 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 22 =
  2. 2.Half of 72 =
  3. 3.Double 19 =
  4. 4.Double 91 =
  5. 5.Half of 52 =
  6. 6.Half of 18 =
  7. 7.Double 54 =
  8. 8.Half of 38 =
  9. 9.Half of 148 =
  10. 10.Half of 136 =
  11. 11.Half of 142 =
  12. 12.Half of 192 =
  13. 13.Half of 154 =
  14. 14.Double 73 =
  15. 15.Double 98 =
  16. 16.Double 45 =
  17. 17.Half of 184 =
  18. 18.Half of 98 =
  19. 19.Double 77 =
  20. 20.Half of 118 =
  21. 21.Half of 194 =
  22. 22.Double 63 =
  23. 23.Double 13 =
  24. 24.Double 82 =
  25. 25.Double 39 =
  26. 26.Double 66 =
  27. 27.Half of 178 =
  28. 28.Half of 88 =
  29. 29.Double 53 =
  30. 30.Double 46 =
  31. 31.Double 44 =
  32. 32.Double 87 =
  33. 33.Half of 16 =
  34. 34.Half of 32 =
  35. 35.Double 16 =
  36. 36.Double 89 =
  37. 37.Half of 12 =
  38. 38.Half of 42 =
  39. 39.Half of 126 =
  40. 40.Double 67 =

Answer key

  1. 11
  2. 36
  3. 38
  4. 182
  5. 26
  6. 9
  7. 108
  8. 19
  9. 74
  10. 68
  11. 71
  12. 96
  13. 77
  14. 146
  15. 196
  16. 90
  17. 92
  18. 49
  19. 154
  20. 59
  21. 97
  22. 126
  23. 26
  24. 164
  25. 78
  26. 132
  27. 89
  28. 44
  29. 106
  30. 92
  31. 88
  32. 174
  33. 8
  34. 16
  35. 32
  36. 178
  37. 6
  38. 21
  39. 63
  40. 134

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