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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 197 · 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 26 =
  2. 2.Double 27 =
  3. 3.Half of 88 =
  4. 4.Double 36 =
  5. 5.Half of 46 =
  6. 6.Double 97 =
  7. 7.Half of 32 =
  8. 8.Half of 76 =
  9. 9.Double 48 =
  10. 10.Half of 152 =
  11. 11.Double 58 =
  12. 12.Double 74 =
  13. 13.Half of 172 =
  14. 14.Half of 178 =
  15. 15.Double 51 =
  16. 16.Half of 118 =
  17. 17.Half of 182 =
  18. 18.Double 49 =
  19. 19.Half of 166 =
  20. 20.Half of 42 =
  21. 21.Double 76 =
  22. 22.Double 12 =
  23. 23.Half of 44 =
  24. 24.Half of 48 =
  25. 25.Half of 142 =
  26. 26.Double 53 =
  27. 27.Half of 34 =
  28. 28.Double 18 =
  29. 29.Double 64 =
  30. 30.Double 16 =
  31. 31.Half of 174 =
  32. 32.Double 83 =
  33. 33.Double 95 =
  34. 34.Half of 156 =
  35. 35.Double 24 =
  36. 36.Double 17 =
  37. 37.Half of 62 =
  38. 38.Double 29 =
  39. 39.Double 39 =
  40. 40.Half of 92 =

Answer key

  1. 52
  2. 54
  3. 44
  4. 72
  5. 23
  6. 194
  7. 16
  8. 38
  9. 96
  10. 76
  11. 116
  12. 148
  13. 86
  14. 89
  15. 102
  16. 59
  17. 91
  18. 98
  19. 83
  20. 21
  21. 152
  22. 24
  23. 22
  24. 24
  25. 71
  26. 106
  27. 17
  28. 36
  29. 128
  30. 32
  31. 87
  32. 166
  33. 190
  34. 78
  35. 48
  36. 34
  37. 31
  38. 58
  39. 78
  40. 46

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