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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 625 · 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 174 =
  2. 2.Half of 184 =
  3. 3.Half of 112 =
  4. 4.Double 43 =
  5. 5.Double 12 =
  6. 6.Half of 172 =
  7. 7.Double 42 =
  8. 8.Double 79 =
  9. 9.Double 33 =
  10. 10.Double 96 =
  11. 11.Double 81 =
  12. 12.Half of 146 =
  13. 13.Half of 88 =
  14. 14.Double 21 =
  15. 15.Double 71 =
  16. 16.Half of 16 =
  17. 17.Double 34 =
  18. 18.Double 55 =
  19. 19.Half of 62 =
  20. 20.Half of 122 =
  21. 21.Half of 142 =
  22. 22.Half of 72 =
  23. 23.Double 44 =
  24. 24.Double 25 =
  25. 25.Double 53 =
  26. 26.Double 14 =
  27. 27.Double 32 =
  28. 28.Half of 162 =
  29. 29.Half of 118 =
  30. 30.Half of 86 =
  31. 31.Double 48 =
  32. 32.Double 77 =
  33. 33.Double 74 =
  34. 34.Double 36 =
  35. 35.Double 91 =
  36. 36.Double 24 =
  37. 37.Half of 94 =
  38. 38.Double 56 =
  39. 39.Double 26 =
  40. 40.Half of 82 =

Answer key

  1. 87
  2. 92
  3. 56
  4. 86
  5. 24
  6. 86
  7. 84
  8. 158
  9. 66
  10. 192
  11. 162
  12. 73
  13. 44
  14. 42
  15. 142
  16. 8
  17. 68
  18. 110
  19. 31
  20. 61
  21. 71
  22. 36
  23. 88
  24. 50
  25. 106
  26. 28
  27. 64
  28. 81
  29. 59
  30. 43
  31. 96
  32. 154
  33. 148
  34. 72
  35. 182
  36. 48
  37. 47
  38. 112
  39. 52
  40. 41

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