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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 699 · 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 32 =
  2. 2.Double 47 =
  3. 3.Double 96 =
  4. 4.Half of 188 =
  5. 5.Double 44 =
  6. 6.Half of 68 =
  7. 7.Double 14 =
  8. 8.Double 23 =
  9. 9.Half of 152 =
  10. 10.Half of 92 =
  11. 11.Double 37 =
  12. 12.Half of 126 =
  13. 13.Half of 56 =
  14. 14.Double 51 =
  15. 15.Half of 96 =
  16. 16.Half of 14 =
  17. 17.Double 21 =
  18. 18.Double 13 =
  19. 19.Half of 16 =
  20. 20.Half of 124 =
  21. 21.Double 55 =
  22. 22.Half of 86 =
  23. 23.Half of 28 =
  24. 24.Double 68 =
  25. 25.Half of 22 =
  26. 26.Half of 174 =
  27. 27.Half of 36 =
  28. 28.Half of 192 =
  29. 29.Double 77 =
  30. 30.Double 97 =
  31. 31.Half of 58 =
  32. 32.Double 79 =
  33. 33.Double 99 =
  34. 34.Double 72 =
  35. 35.Double 76 =
  36. 36.Double 12 =
  37. 37.Double 16 =
  38. 38.Half of 72 =
  39. 39.Double 63 =
  40. 40.Double 95 =

Answer key

  1. 64
  2. 94
  3. 192
  4. 94
  5. 88
  6. 34
  7. 28
  8. 46
  9. 76
  10. 46
  11. 74
  12. 63
  13. 28
  14. 102
  15. 48
  16. 7
  17. 42
  18. 26
  19. 8
  20. 62
  21. 110
  22. 43
  23. 14
  24. 136
  25. 11
  26. 87
  27. 18
  28. 96
  29. 154
  30. 194
  31. 29
  32. 158
  33. 198
  34. 144
  35. 152
  36. 24
  37. 32
  38. 36
  39. 126
  40. 190

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