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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 276 · 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 36 =
  2. 2.Double 14 =
  3. 3.Half of 198 =
  4. 4.Double 85 =
  5. 5.Double 31 =
  6. 6.Double 77 =
  7. 7.Half of 34 =
  8. 8.Half of 132 =
  9. 9.Double 25 =
  10. 10.Double 32 =
  11. 11.Double 49 =
  12. 12.Double 37 =
  13. 13.Half of 94 =
  14. 14.Double 72 =
  15. 15.Half of 14 =
  16. 16.Half of 176 =
  17. 17.Half of 112 =
  18. 18.Half of 162 =
  19. 19.Double 56 =
  20. 20.Double 44 =
  21. 21.Half of 184 =
  22. 22.Double 88 =
  23. 23.Half of 122 =
  24. 24.Half of 178 =
  25. 25.Half of 126 =
  26. 26.Double 41 =
  27. 27.Half of 46 =
  28. 28.Double 87 =
  29. 29.Double 97 =
  30. 30.Double 68 =
  31. 31.Half of 44 =
  32. 32.Double 54 =
  33. 33.Double 16 =
  34. 34.Half of 152 =
  35. 35.Double 19 =
  36. 36.Double 86 =
  37. 37.Double 99 =
  38. 38.Half of 48 =
  39. 39.Half of 144 =
  40. 40.Double 13 =

Answer key

  1. 18
  2. 28
  3. 99
  4. 170
  5. 62
  6. 154
  7. 17
  8. 66
  9. 50
  10. 64
  11. 98
  12. 74
  13. 47
  14. 144
  15. 7
  16. 88
  17. 56
  18. 81
  19. 112
  20. 88
  21. 92
  22. 176
  23. 61
  24. 89
  25. 63
  26. 82
  27. 23
  28. 174
  29. 194
  30. 136
  31. 22
  32. 108
  33. 32
  34. 76
  35. 38
  36. 172
  37. 198
  38. 24
  39. 72
  40. 26

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