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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 831 · 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 192 =
  2. 2.Double 76 =
  3. 3.Half of 154 =
  4. 4.Double 16 =
  5. 5.Double 73 =
  6. 6.Half of 28 =
  7. 7.Double 91 =
  8. 8.Half of 152 =
  9. 9.Double 49 =
  10. 10.Half of 112 =
  11. 11.Double 43 =
  12. 12.Double 26 =
  13. 13.Half of 52 =
  14. 14.Half of 128 =
  15. 15.Half of 72 =
  16. 16.Double 86 =
  17. 17.Half of 88 =
  18. 18.Half of 24 =
  19. 19.Half of 62 =
  20. 20.Double 23 =
  21. 21.Half of 136 =
  22. 22.Half of 186 =
  23. 23.Double 35 =
  24. 24.Double 41 =
  25. 25.Half of 38 =
  26. 26.Double 82 =
  27. 27.Double 92 =
  28. 28.Double 71 =
  29. 29.Double 77 =
  30. 30.Double 65 =
  31. 31.Double 47 =
  32. 32.Half of 92 =
  33. 33.Half of 86 =
  34. 34.Half of 76 =
  35. 35.Double 18 =
  36. 36.Half of 94 =
  37. 37.Half of 126 =
  38. 38.Double 94 =
  39. 39.Double 81 =
  40. 40.Double 31 =

Answer key

  1. 96
  2. 152
  3. 77
  4. 32
  5. 146
  6. 14
  7. 182
  8. 76
  9. 98
  10. 56
  11. 86
  12. 52
  13. 26
  14. 64
  15. 36
  16. 172
  17. 44
  18. 12
  19. 31
  20. 46
  21. 68
  22. 93
  23. 70
  24. 82
  25. 19
  26. 164
  27. 184
  28. 142
  29. 154
  30. 130
  31. 94
  32. 46
  33. 43
  34. 38
  35. 36
  36. 47
  37. 63
  38. 188
  39. 162
  40. 62

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