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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 477 · 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 18 =
  2. 2.Half of 132 =
  3. 3.Double 58 =
  4. 4.Double 13 =
  5. 5.Double 43 =
  6. 6.Half of 168 =
  7. 7.Half of 162 =
  8. 8.Double 91 =
  9. 9.Double 82 =
  10. 10.Half of 44 =
  11. 11.Half of 194 =
  12. 12.Double 59 =
  13. 13.Half of 154 =
  14. 14.Double 36 =
  15. 15.Double 93 =
  16. 16.Half of 118 =
  17. 17.Half of 186 =
  18. 18.Double 23 =
  19. 19.Half of 172 =
  20. 20.Half of 138 =
  21. 21.Half of 136 =
  22. 22.Double 54 =
  23. 23.Half of 184 =
  24. 24.Double 71 =
  25. 25.Double 87 =
  26. 26.Half of 42 =
  27. 27.Half of 36 =
  28. 28.Double 52 =
  29. 29.Half of 92 =
  30. 30.Double 49 =
  31. 31.Double 92 =
  32. 32.Half of 48 =
  33. 33.Double 83 =
  34. 34.Double 76 =
  35. 35.Half of 56 =
  36. 36.Double 22 =
  37. 37.Double 63 =
  38. 38.Double 68 =
  39. 39.Half of 96 =
  40. 40.Double 95 =

Answer key

  1. 36
  2. 66
  3. 116
  4. 26
  5. 86
  6. 84
  7. 81
  8. 182
  9. 164
  10. 22
  11. 97
  12. 118
  13. 77
  14. 72
  15. 186
  16. 59
  17. 93
  18. 46
  19. 86
  20. 69
  21. 68
  22. 108
  23. 92
  24. 142
  25. 174
  26. 21
  27. 18
  28. 104
  29. 46
  30. 98
  31. 184
  32. 24
  33. 166
  34. 152
  35. 28
  36. 44
  37. 126
  38. 136
  39. 48
  40. 190

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