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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 52 · 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 41 =
  2. 2.Double 75 =
  3. 3.Half of 192 =
  4. 4.Double 13 =
  5. 5.Double 27 =
  6. 6.Double 88 =
  7. 7.Half of 152 =
  8. 8.Half of 186 =
  9. 9.Double 28 =
  10. 10.Half of 176 =
  11. 11.Double 87 =
  12. 12.Double 42 =
  13. 13.Half of 36 =
  14. 14.Double 34 =
  15. 15.Double 25 =
  16. 16.Half of 174 =
  17. 17.Double 21 =
  18. 18.Double 15 =
  19. 19.Half of 168 =
  20. 20.Double 58 =
  21. 21.Half of 146 =
  22. 22.Half of 86 =
  23. 23.Half of 172 =
  24. 24.Double 31 =
  25. 25.Half of 162 =
  26. 26.Double 77 =
  27. 27.Double 94 =
  28. 28.Double 73 =
  29. 29.Half of 112 =
  30. 30.Double 35 =
  31. 31.Double 23 =
  32. 32.Double 95 =
  33. 33.Half of 56 =
  34. 34.Half of 198 =
  35. 35.Half of 38 =
  36. 36.Half of 22 =
  37. 37.Double 97 =
  38. 38.Double 76 =
  39. 39.Half of 156 =
  40. 40.Double 79 =

Answer key

  1. 82
  2. 150
  3. 96
  4. 26
  5. 54
  6. 176
  7. 76
  8. 93
  9. 56
  10. 88
  11. 174
  12. 84
  13. 18
  14. 68
  15. 50
  16. 87
  17. 42
  18. 30
  19. 84
  20. 116
  21. 73
  22. 43
  23. 86
  24. 62
  25. 81
  26. 154
  27. 188
  28. 146
  29. 56
  30. 70
  31. 46
  32. 190
  33. 28
  34. 99
  35. 19
  36. 11
  37. 194
  38. 152
  39. 78
  40. 158

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