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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 777 · 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 13 =
  2. 2.Double 56 =
  3. 3.Double 76 =
  4. 4.Half of 72 =
  5. 5.Double 94 =
  6. 6.Half of 88 =
  7. 7.Double 51 =
  8. 8.Double 65 =
  9. 9.Double 66 =
  10. 10.Half of 82 =
  11. 11.Double 11 =
  12. 12.Double 95 =
  13. 13.Double 45 =
  14. 14.Half of 12 =
  15. 15.Double 41 =
  16. 16.Half of 142 =
  17. 17.Half of 138 =
  18. 18.Half of 126 =
  19. 19.Double 36 =
  20. 20.Half of 166 =
  21. 21.Double 47 =
  22. 22.Half of 98 =
  23. 23.Half of 152 =
  24. 24.Double 96 =
  25. 25.Half of 112 =
  26. 26.Half of 162 =
  27. 27.Half of 22 =
  28. 28.Half of 134 =
  29. 29.Half of 182 =
  30. 30.Half of 164 =
  31. 31.Half of 144 =
  32. 32.Half of 122 =
  33. 33.Half of 58 =
  34. 34.Double 82 =
  35. 35.Double 68 =
  36. 36.Double 54 =
  37. 37.Double 34 =
  38. 38.Double 87 =
  39. 39.Double 21 =
  40. 40.Double 44 =

Answer key

  1. 26
  2. 112
  3. 152
  4. 36
  5. 188
  6. 44
  7. 102
  8. 130
  9. 132
  10. 41
  11. 22
  12. 190
  13. 90
  14. 6
  15. 82
  16. 71
  17. 69
  18. 63
  19. 72
  20. 83
  21. 94
  22. 49
  23. 76
  24. 192
  25. 56
  26. 81
  27. 11
  28. 67
  29. 91
  30. 82
  31. 72
  32. 61
  33. 29
  34. 164
  35. 136
  36. 108
  37. 68
  38. 174
  39. 42
  40. 88

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