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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 617 · 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 64 =
  2. 2.Half of 12 =
  3. 3.Half of 92 =
  4. 4.Half of 134 =
  5. 5.Double 38 =
  6. 6.Half of 184 =
  7. 7.Double 53 =
  8. 8.Half of 44 =
  9. 9.Double 85 =
  10. 10.Double 66 =
  11. 11.Half of 162 =
  12. 12.Half of 192 =
  13. 13.Half of 116 =
  14. 14.Double 73 =
  15. 15.Double 98 =
  16. 16.Double 41 =
  17. 17.Double 48 =
  18. 18.Half of 52 =
  19. 19.Double 65 =
  20. 20.Half of 28 =
  21. 21.Half of 178 =
  22. 22.Double 96 =
  23. 23.Half of 84 =
  24. 24.Double 97 =
  25. 25.Double 43 =
  26. 26.Double 76 =
  27. 27.Half of 98 =
  28. 28.Double 25 =
  29. 29.Half of 56 =
  30. 30.Double 69 =
  31. 31.Half of 156 =
  32. 32.Double 75 =
  33. 33.Double 16 =
  34. 34.Double 67 =
  35. 35.Double 32 =
  36. 36.Half of 112 =
  37. 37.Half of 132 =
  38. 38.Half of 32 =
  39. 39.Double 19 =
  40. 40.Double 34 =

Answer key

  1. 32
  2. 6
  3. 46
  4. 67
  5. 76
  6. 92
  7. 106
  8. 22
  9. 170
  10. 132
  11. 81
  12. 96
  13. 58
  14. 146
  15. 196
  16. 82
  17. 96
  18. 26
  19. 130
  20. 14
  21. 89
  22. 192
  23. 42
  24. 194
  25. 86
  26. 152
  27. 49
  28. 50
  29. 28
  30. 138
  31. 78
  32. 150
  33. 32
  34. 134
  35. 64
  36. 56
  37. 66
  38. 16
  39. 38
  40. 68

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