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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 787 · 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 93 =
  2. 2.Half of 48 =
  3. 3.Half of 102 =
  4. 4.Double 36 =
  5. 5.Double 32 =
  6. 6.Double 22 =
  7. 7.Double 51 =
  8. 8.Double 85 =
  9. 9.Double 21 =
  10. 10.Half of 196 =
  11. 11.Half of 178 =
  12. 12.Double 81 =
  13. 13.Half of 42 =
  14. 14.Half of 118 =
  15. 15.Half of 16 =
  16. 16.Half of 172 =
  17. 17.Double 17 =
  18. 18.Double 77 =
  19. 19.Double 68 =
  20. 20.Half of 72 =
  21. 21.Half of 88 =
  22. 22.Half of 184 =
  23. 23.Half of 92 =
  24. 24.Double 97 =
  25. 25.Double 86 =
  26. 26.Half of 14 =
  27. 27.Half of 124 =
  28. 28.Half of 104 =
  29. 29.Double 72 =
  30. 30.Half of 182 =
  31. 31.Half of 84 =
  32. 32.Half of 112 =
  33. 33.Half of 22 =
  34. 34.Double 59 =
  35. 35.Half of 44 =
  36. 36.Half of 148 =
  37. 37.Half of 158 =
  38. 38.Half of 198 =
  39. 39.Double 47 =
  40. 40.Double 78 =

Answer key

  1. 186
  2. 24
  3. 51
  4. 72
  5. 64
  6. 44
  7. 102
  8. 170
  9. 42
  10. 98
  11. 89
  12. 162
  13. 21
  14. 59
  15. 8
  16. 86
  17. 34
  18. 154
  19. 136
  20. 36
  21. 44
  22. 92
  23. 46
  24. 194
  25. 172
  26. 7
  27. 62
  28. 52
  29. 144
  30. 91
  31. 42
  32. 56
  33. 11
  34. 118
  35. 22
  36. 74
  37. 79
  38. 99
  39. 94
  40. 156

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