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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 219 · 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 82 =
  2. 2.Half of 48 =
  3. 3.Half of 86 =
  4. 4.Half of 76 =
  5. 5.Half of 184 =
  6. 6.Half of 52 =
  7. 7.Half of 148 =
  8. 8.Double 57 =
  9. 9.Double 42 =
  10. 10.Double 84 =
  11. 11.Double 19 =
  12. 12.Double 65 =
  13. 13.Double 21 =
  14. 14.Double 97 =
  15. 15.Half of 154 =
  16. 16.Double 12 =
  17. 17.Double 31 =
  18. 18.Double 99 =
  19. 19.Half of 62 =
  20. 20.Double 66 =
  21. 21.Double 29 =
  22. 22.Double 25 =
  23. 23.Double 96 =
  24. 24.Double 17 =
  25. 25.Double 51 =
  26. 26.Double 64 =
  27. 27.Half of 32 =
  28. 28.Half of 196 =
  29. 29.Half of 74 =
  30. 30.Double 68 =
  31. 31.Half of 72 =
  32. 32.Double 48 =
  33. 33.Double 92 =
  34. 34.Half of 142 =
  35. 35.Half of 188 =
  36. 36.Half of 174 =
  37. 37.Half of 104 =
  38. 38.Double 75 =
  39. 39.Half of 134 =
  40. 40.Double 91 =

Answer key

  1. 164
  2. 24
  3. 43
  4. 38
  5. 92
  6. 26
  7. 74
  8. 114
  9. 84
  10. 168
  11. 38
  12. 130
  13. 42
  14. 194
  15. 77
  16. 24
  17. 62
  18. 198
  19. 31
  20. 132
  21. 58
  22. 50
  23. 192
  24. 34
  25. 102
  26. 128
  27. 16
  28. 98
  29. 37
  30. 136
  31. 36
  32. 96
  33. 184
  34. 71
  35. 94
  36. 87
  37. 52
  38. 150
  39. 67
  40. 182

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