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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 395 · 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 184 =
  2. 2.Double 17 =
  3. 3.Double 48 =
  4. 4.Double 95 =
  5. 5.Double 24 =
  6. 6.Double 79 =
  7. 7.Half of 16 =
  8. 8.Double 34 =
  9. 9.Half of 174 =
  10. 10.Half of 166 =
  11. 11.Half of 126 =
  12. 12.Double 37 =
  13. 13.Double 41 =
  14. 14.Double 27 =
  15. 15.Half of 92 =
  16. 16.Double 11 =
  17. 17.Double 23 =
  18. 18.Double 96 =
  19. 19.Half of 162 =
  20. 20.Double 76 =
  21. 21.Double 99 =
  22. 22.Half of 192 =
  23. 23.Double 22 =
  24. 24.Half of 42 =
  25. 25.Double 61 =
  26. 26.Half of 78 =
  27. 27.Double 29 =
  28. 28.Half of 168 =
  29. 29.Double 73 =
  30. 30.Double 92 =
  31. 31.Half of 82 =
  32. 32.Half of 94 =
  33. 33.Double 13 =
  34. 34.Double 91 =
  35. 35.Double 53 =
  36. 36.Half of 134 =
  37. 37.Half of 178 =
  38. 38.Half of 14 =
  39. 39.Double 52 =
  40. 40.Half of 56 =

Answer key

  1. 92
  2. 34
  3. 96
  4. 190
  5. 48
  6. 158
  7. 8
  8. 68
  9. 87
  10. 83
  11. 63
  12. 74
  13. 82
  14. 54
  15. 46
  16. 22
  17. 46
  18. 192
  19. 81
  20. 152
  21. 198
  22. 96
  23. 44
  24. 21
  25. 122
  26. 39
  27. 58
  28. 84
  29. 146
  30. 184
  31. 41
  32. 47
  33. 26
  34. 182
  35. 106
  36. 67
  37. 89
  38. 7
  39. 104
  40. 28

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