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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 280 · 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.Double 81 =
  3. 3.Half of 176 =
  4. 4.Double 89 =
  5. 5.Double 94 =
  6. 6.Half of 196 =
  7. 7.Double 52 =
  8. 8.Half of 54 =
  9. 9.Half of 88 =
  10. 10.Half of 84 =
  11. 11.Double 51 =
  12. 12.Double 35 =
  13. 13.Half of 132 =
  14. 14.Half of 164 =
  15. 15.Double 86 =
  16. 16.Double 95 =
  17. 17.Half of 32 =
  18. 18.Double 34 =
  19. 19.Half of 192 =
  20. 20.Double 24 =
  21. 21.Half of 186 =
  22. 22.Half of 138 =
  23. 23.Half of 22 =
  24. 24.Half of 16 =
  25. 25.Half of 126 =
  26. 26.Double 44 =
  27. 27.Half of 92 =
  28. 28.Half of 76 =
  29. 29.Double 69 =
  30. 30.Half of 78 =
  31. 31.Double 13 =
  32. 32.Half of 122 =
  33. 33.Half of 172 =
  34. 34.Half of 162 =
  35. 35.Half of 182 =
  36. 36.Double 88 =
  37. 37.Double 59 =
  38. 38.Half of 152 =
  39. 39.Double 46 =
  40. 40.Double 91 =

Answer key

  1. 87
  2. 162
  3. 88
  4. 178
  5. 188
  6. 98
  7. 104
  8. 27
  9. 44
  10. 42
  11. 102
  12. 70
  13. 66
  14. 82
  15. 172
  16. 190
  17. 16
  18. 68
  19. 96
  20. 48
  21. 93
  22. 69
  23. 11
  24. 8
  25. 63
  26. 88
  27. 46
  28. 38
  29. 138
  30. 39
  31. 26
  32. 61
  33. 86
  34. 81
  35. 91
  36. 176
  37. 118
  38. 76
  39. 92
  40. 182

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