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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 447 · 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 81 =
  2. 2.Double 27 =
  3. 3.Half of 58 =
  4. 4.Double 75 =
  5. 5.Double 43 =
  6. 6.Half of 162 =
  7. 7.Half of 182 =
  8. 8.Double 87 =
  9. 9.Double 47 =
  10. 10.Half of 148 =
  11. 11.Double 49 =
  12. 12.Double 34 =
  13. 13.Double 12 =
  14. 14.Double 69 =
  15. 15.Double 97 =
  16. 16.Double 68 =
  17. 17.Half of 132 =
  18. 18.Double 67 =
  19. 19.Double 66 =
  20. 20.Half of 154 =
  21. 21.Double 91 =
  22. 22.Double 17 =
  23. 23.Half of 128 =
  24. 24.Double 48 =
  25. 25.Double 63 =
  26. 26.Half of 82 =
  27. 27.Half of 138 =
  28. 28.Double 82 =
  29. 29.Double 32 =
  30. 30.Double 98 =
  31. 31.Half of 116 =
  32. 32.Double 15 =
  33. 33.Double 31 =
  34. 34.Double 99 =
  35. 35.Half of 114 =
  36. 36.Double 73 =
  37. 37.Half of 124 =
  38. 38.Double 35 =
  39. 39.Double 14 =
  40. 40.Half of 62 =

Answer key

  1. 162
  2. 54
  3. 29
  4. 150
  5. 86
  6. 81
  7. 91
  8. 174
  9. 94
  10. 74
  11. 98
  12. 68
  13. 24
  14. 138
  15. 194
  16. 136
  17. 66
  18. 134
  19. 132
  20. 77
  21. 182
  22. 34
  23. 64
  24. 96
  25. 126
  26. 41
  27. 69
  28. 164
  29. 64
  30. 196
  31. 58
  32. 30
  33. 62
  34. 198
  35. 57
  36. 146
  37. 62
  38. 70
  39. 28
  40. 31

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