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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 582 · 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 54 =
  2. 2.Half of 132 =
  3. 3.Double 45 =
  4. 4.Half of 52 =
  5. 5.Double 34 =
  6. 6.Half of 22 =
  7. 7.Half of 66 =
  8. 8.Double 75 =
  9. 9.Double 39 =
  10. 10.Half of 154 =
  11. 11.Half of 24 =
  12. 12.Double 84 =
  13. 13.Half of 156 =
  14. 14.Double 68 =
  15. 15.Double 96 =
  16. 16.Half of 54 =
  17. 17.Half of 76 =
  18. 18.Double 85 =
  19. 19.Half of 32 =
  20. 20.Half of 182 =
  21. 21.Half of 158 =
  22. 22.Half of 26 =
  23. 23.Half of 126 =
  24. 24.Double 94 =
  25. 25.Half of 152 =
  26. 26.Half of 106 =
  27. 27.Double 95 =
  28. 28.Double 92 =
  29. 29.Half of 96 =
  30. 30.Double 13 =
  31. 31.Double 35 =
  32. 32.Half of 64 =
  33. 33.Double 79 =
  34. 34.Half of 192 =
  35. 35.Double 72 =
  36. 36.Half of 112 =
  37. 37.Double 12 =
  38. 38.Double 51 =
  39. 39.Double 71 =
  40. 40.Double 29 =

Answer key

  1. 108
  2. 66
  3. 90
  4. 26
  5. 68
  6. 11
  7. 33
  8. 150
  9. 78
  10. 77
  11. 12
  12. 168
  13. 78
  14. 136
  15. 192
  16. 27
  17. 38
  18. 170
  19. 16
  20. 91
  21. 79
  22. 13
  23. 63
  24. 188
  25. 76
  26. 53
  27. 190
  28. 184
  29. 48
  30. 26
  31. 70
  32. 32
  33. 158
  34. 96
  35. 144
  36. 56
  37. 24
  38. 102
  39. 142
  40. 58

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