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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 76 · 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 146 =
  2. 2.Double 99 =
  3. 3.Double 94 =
  4. 4.Double 24 =
  5. 5.Double 23 =
  6. 6.Half of 44 =
  7. 7.Half of 104 =
  8. 8.Double 17 =
  9. 9.Double 92 =
  10. 10.Half of 132 =
  11. 11.Half of 98 =
  12. 12.Double 51 =
  13. 13.Double 66 =
  14. 14.Double 11 =
  15. 15.Half of 178 =
  16. 16.Half of 102 =
  17. 17.Half of 14 =
  18. 18.Half of 76 =
  19. 19.Double 59 =
  20. 20.Double 35 =
  21. 21.Double 95 =
  22. 22.Half of 28 =
  23. 23.Double 46 =
  24. 24.Half of 74 =
  25. 25.Double 12 =
  26. 26.Double 76 =
  27. 27.Half of 156 =
  28. 28.Double 26 =
  29. 29.Half of 174 =
  30. 30.Half of 48 =
  31. 31.Double 85 =
  32. 32.Half of 54 =
  33. 33.Half of 186 =
  34. 34.Double 55 =
  35. 35.Half of 56 =
  36. 36.Half of 64 =
  37. 37.Half of 12 =
  38. 38.Half of 122 =
  39. 39.Half of 72 =
  40. 40.Double 96 =

Answer key

  1. 73
  2. 198
  3. 188
  4. 48
  5. 46
  6. 22
  7. 52
  8. 34
  9. 184
  10. 66
  11. 49
  12. 102
  13. 132
  14. 22
  15. 89
  16. 51
  17. 7
  18. 38
  19. 118
  20. 70
  21. 190
  22. 14
  23. 92
  24. 37
  25. 24
  26. 152
  27. 78
  28. 52
  29. 87
  30. 24
  31. 170
  32. 27
  33. 93
  34. 110
  35. 28
  36. 32
  37. 6
  38. 61
  39. 36
  40. 192

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