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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 168 · 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 164 =
  2. 2.Half of 148 =
  3. 3.Double 53 =
  4. 4.Double 12 =
  5. 5.Double 44 =
  6. 6.Half of 126 =
  7. 7.Double 76 =
  8. 8.Double 59 =
  9. 9.Double 91 =
  10. 10.Half of 62 =
  11. 11.Double 96 =
  12. 12.Double 87 =
  13. 13.Double 66 =
  14. 14.Double 71 =
  15. 15.Half of 142 =
  16. 16.Half of 18 =
  17. 17.Half of 128 =
  18. 18.Half of 156 =
  19. 19.Double 65 =
  20. 20.Double 46 =
  21. 21.Half of 32 =
  22. 22.Double 38 =
  23. 23.Half of 56 =
  24. 24.Half of 78 =
  25. 25.Half of 178 =
  26. 26.Half of 92 =
  27. 27.Half of 12 =
  28. 28.Double 69 =
  29. 29.Half of 28 =
  30. 30.Half of 74 =
  31. 31.Double 99 =
  32. 32.Double 24 =
  33. 33.Half of 176 =
  34. 34.Half of 34 =
  35. 35.Double 26 =
  36. 36.Double 72 =
  37. 37.Half of 146 =
  38. 38.Double 64 =
  39. 39.Double 67 =
  40. 40.Half of 54 =

Answer key

  1. 82
  2. 74
  3. 106
  4. 24
  5. 88
  6. 63
  7. 152
  8. 118
  9. 182
  10. 31
  11. 192
  12. 174
  13. 132
  14. 142
  15. 71
  16. 9
  17. 64
  18. 78
  19. 130
  20. 92
  21. 16
  22. 76
  23. 28
  24. 39
  25. 89
  26. 46
  27. 6
  28. 138
  29. 14
  30. 37
  31. 198
  32. 48
  33. 88
  34. 17
  35. 52
  36. 144
  37. 73
  38. 128
  39. 134
  40. 27

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