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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 429 · 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 144 =
  2. 2.Double 81 =
  3. 3.Double 73 =
  4. 4.Half of 92 =
  5. 5.Half of 32 =
  6. 6.Half of 122 =
  7. 7.Half of 22 =
  8. 8.Double 14 =
  9. 9.Half of 112 =
  10. 10.Half of 184 =
  11. 11.Double 84 =
  12. 12.Double 15 =
  13. 13.Half of 194 =
  14. 14.Double 61 =
  15. 15.Half of 128 =
  16. 16.Half of 168 =
  17. 17.Half of 62 =
  18. 18.Half of 182 =
  19. 19.Half of 124 =
  20. 20.Double 97 =
  21. 21.Double 91 =
  22. 22.Half of 158 =
  23. 23.Half of 54 =
  24. 24.Double 12 =
  25. 25.Double 94 =
  26. 26.Double 75 =
  27. 27.Half of 152 =
  28. 28.Double 95 =
  29. 29.Half of 18 =
  30. 30.Double 53 =
  31. 31.Double 24 =
  32. 32.Double 72 =
  33. 33.Half of 114 =
  34. 34.Double 42 =
  35. 35.Double 35 =
  36. 36.Half of 76 =
  37. 37.Double 26 =
  38. 38.Double 76 =
  39. 39.Half of 162 =
  40. 40.Double 34 =

Answer key

  1. 72
  2. 162
  3. 146
  4. 46
  5. 16
  6. 61
  7. 11
  8. 28
  9. 56
  10. 92
  11. 168
  12. 30
  13. 97
  14. 122
  15. 64
  16. 84
  17. 31
  18. 91
  19. 62
  20. 194
  21. 182
  22. 79
  23. 27
  24. 24
  25. 188
  26. 150
  27. 76
  28. 190
  29. 9
  30. 106
  31. 48
  32. 144
  33. 57
  34. 84
  35. 70
  36. 38
  37. 52
  38. 152
  39. 81
  40. 68

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