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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 227 · 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 24 =
  2. 2.Half of 154 =
  3. 3.Half of 168 =
  4. 4.Double 84 =
  5. 5.Half of 18 =
  6. 6.Half of 114 =
  7. 7.Half of 184 =
  8. 8.Double 75 =
  9. 9.Double 43 =
  10. 10.Double 15 =
  11. 11.Double 85 =
  12. 12.Half of 106 =
  13. 13.Half of 72 =
  14. 14.Double 26 =
  15. 15.Double 32 =
  16. 16.Double 44 =
  17. 17.Double 17 =
  18. 18.Double 25 =
  19. 19.Half of 76 =
  20. 20.Half of 118 =
  21. 21.Half of 186 =
  22. 22.Double 72 =
  23. 23.Half of 92 =
  24. 24.Half of 182 =
  25. 25.Half of 42 =
  26. 26.Double 59 =
  27. 27.Double 23 =
  28. 28.Double 92 =
  29. 29.Double 21 =
  30. 30.Half of 64 =
  31. 31.Double 47 =
  32. 32.Double 79 =
  33. 33.Double 76 =
  34. 34.Double 62 =
  35. 35.Half of 136 =
  36. 36.Half of 132 =
  37. 37.Half of 174 =
  38. 38.Half of 22 =
  39. 39.Double 74 =
  40. 40.Double 13 =

Answer key

  1. 48
  2. 77
  3. 84
  4. 168
  5. 9
  6. 57
  7. 92
  8. 150
  9. 86
  10. 30
  11. 170
  12. 53
  13. 36
  14. 52
  15. 64
  16. 88
  17. 34
  18. 50
  19. 38
  20. 59
  21. 93
  22. 144
  23. 46
  24. 91
  25. 21
  26. 118
  27. 46
  28. 184
  29. 42
  30. 32
  31. 94
  32. 158
  33. 152
  34. 124
  35. 68
  36. 66
  37. 87
  38. 11
  39. 148
  40. 26

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