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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 627 · 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 78 =
  2. 2.Half of 82 =
  3. 3.Double 26 =
  4. 4.Double 73 =
  5. 5.Half of 114 =
  6. 6.Half of 64 =
  7. 7.Double 59 =
  8. 8.Double 61 =
  9. 9.Double 28 =
  10. 10.Half of 172 =
  11. 11.Double 58 =
  12. 12.Double 85 =
  13. 13.Double 31 =
  14. 14.Double 62 =
  15. 15.Double 16 =
  16. 16.Half of 22 =
  17. 17.Double 64 =
  18. 18.Double 29 =
  19. 19.Double 97 =
  20. 20.Double 99 =
  21. 21.Half of 132 =
  22. 22.Double 18 =
  23. 23.Half of 144 =
  24. 24.Double 96 =
  25. 25.Double 53 =
  26. 26.Double 52 =
  27. 27.Double 66 =
  28. 28.Double 68 =
  29. 29.Half of 104 =
  30. 30.Double 65 =
  31. 31.Double 14 =
  32. 32.Half of 84 =
  33. 33.Half of 92 =
  34. 34.Half of 148 =
  35. 35.Double 81 =
  36. 36.Double 76 =
  37. 37.Double 41 =
  38. 38.Half of 18 =
  39. 39.Half of 52 =
  40. 40.Half of 176 =

Answer key

  1. 156
  2. 41
  3. 52
  4. 146
  5. 57
  6. 32
  7. 118
  8. 122
  9. 56
  10. 86
  11. 116
  12. 170
  13. 62
  14. 124
  15. 32
  16. 11
  17. 128
  18. 58
  19. 194
  20. 198
  21. 66
  22. 36
  23. 72
  24. 192
  25. 106
  26. 104
  27. 132
  28. 136
  29. 52
  30. 130
  31. 28
  32. 42
  33. 46
  34. 74
  35. 162
  36. 152
  37. 82
  38. 9
  39. 26
  40. 88

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