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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 22 · 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 41 =
  2. 2.Double 86 =
  3. 3.Double 28 =
  4. 4.Double 37 =
  5. 5.Double 11 =
  6. 6.Double 71 =
  7. 7.Double 61 =
  8. 8.Double 95 =
  9. 9.Half of 182 =
  10. 10.Double 44 =
  11. 11.Half of 92 =
  12. 12.Half of 82 =
  13. 13.Half of 54 =
  14. 14.Half of 56 =
  15. 15.Half of 156 =
  16. 16.Half of 122 =
  17. 17.Half of 172 =
  18. 18.Double 31 =
  19. 19.Double 75 =
  20. 20.Double 62 =
  21. 21.Half of 144 =
  22. 22.Half of 52 =
  23. 23.Double 94 =
  24. 24.Half of 186 =
  25. 25.Double 21 =
  26. 26.Double 27 =
  27. 27.Half of 176 =
  28. 28.Double 98 =
  29. 29.Half of 16 =
  30. 30.Half of 148 =
  31. 31.Double 74 =
  32. 32.Half of 36 =
  33. 33.Half of 84 =
  34. 34.Double 42 =
  35. 35.Double 84 =
  36. 36.Half of 64 =
  37. 37.Half of 32 =
  38. 38.Half of 62 =
  39. 39.Double 83 =
  40. 40.Half of 164 =

Answer key

  1. 82
  2. 172
  3. 56
  4. 74
  5. 22
  6. 142
  7. 122
  8. 190
  9. 91
  10. 88
  11. 46
  12. 41
  13. 27
  14. 28
  15. 78
  16. 61
  17. 86
  18. 62
  19. 150
  20. 124
  21. 72
  22. 26
  23. 188
  24. 93
  25. 42
  26. 54
  27. 88
  28. 196
  29. 8
  30. 74
  31. 148
  32. 18
  33. 42
  34. 84
  35. 168
  36. 32
  37. 16
  38. 31
  39. 166
  40. 82

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