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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 43 · 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 96 =
  2. 2.Half of 58 =
  3. 3.Double 45 =
  4. 4.Half of 42 =
  5. 5.Double 25 =
  6. 6.Half of 152 =
  7. 7.Half of 78 =
  8. 8.Double 65 =
  9. 9.Double 37 =
  10. 10.Double 13 =
  11. 11.Half of 122 =
  12. 12.Double 81 =
  13. 13.Double 49 =
  14. 14.Half of 54 =
  15. 15.Double 34 =
  16. 16.Double 95 =
  17. 17.Double 67 =
  18. 18.Half of 84 =
  19. 19.Half of 26 =
  20. 20.Double 76 =
  21. 21.Double 58 =
  22. 22.Half of 116 =
  23. 23.Half of 34 =
  24. 24.Double 85 =
  25. 25.Double 29 =
  26. 26.Double 35 =
  27. 27.Half of 12 =
  28. 28.Half of 136 =
  29. 29.Double 71 =
  30. 30.Half of 174 =
  31. 31.Half of 154 =
  32. 32.Half of 172 =
  33. 33.Double 64 =
  34. 34.Double 74 =
  35. 35.Half of 94 =
  36. 36.Half of 142 =
  37. 37.Half of 74 =
  38. 38.Double 24 =
  39. 39.Half of 156 =
  40. 40.Half of 86 =

Answer key

  1. 192
  2. 29
  3. 90
  4. 21
  5. 50
  6. 76
  7. 39
  8. 130
  9. 74
  10. 26
  11. 61
  12. 162
  13. 98
  14. 27
  15. 68
  16. 190
  17. 134
  18. 42
  19. 13
  20. 152
  21. 116
  22. 58
  23. 17
  24. 170
  25. 58
  26. 70
  27. 6
  28. 68
  29. 142
  30. 87
  31. 77
  32. 86
  33. 128
  34. 148
  35. 47
  36. 71
  37. 37
  38. 48
  39. 78
  40. 43

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