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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 643 · 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 78 =
  2. 2.Half of 184 =
  3. 3.Half of 52 =
  4. 4.Half of 102 =
  5. 5.Half of 98 =
  6. 6.Half of 104 =
  7. 7.Double 27 =
  8. 8.Half of 32 =
  9. 9.Half of 68 =
  10. 10.Half of 114 =
  11. 11.Double 12 =
  12. 12.Double 41 =
  13. 13.Half of 164 =
  14. 14.Double 34 =
  15. 15.Half of 148 =
  16. 16.Half of 166 =
  17. 17.Double 95 =
  18. 18.Double 65 =
  19. 19.Half of 54 =
  20. 20.Half of 188 =
  21. 21.Half of 84 =
  22. 22.Half of 78 =
  23. 23.Double 82 =
  24. 24.Half of 72 =
  25. 25.Double 47 =
  26. 26.Half of 42 =
  27. 27.Double 97 =
  28. 28.Half of 172 =
  29. 29.Half of 26 =
  30. 30.Double 35 =
  31. 31.Double 39 =
  32. 32.Double 87 =
  33. 33.Double 74 =
  34. 34.Double 13 =
  35. 35.Double 69 =
  36. 36.Double 83 =
  37. 37.Double 29 =
  38. 38.Half of 76 =
  39. 39.Half of 158 =
  40. 40.Half of 124 =

Answer key

  1. 156
  2. 92
  3. 26
  4. 51
  5. 49
  6. 52
  7. 54
  8. 16
  9. 34
  10. 57
  11. 24
  12. 82
  13. 82
  14. 68
  15. 74
  16. 83
  17. 190
  18. 130
  19. 27
  20. 94
  21. 42
  22. 39
  23. 164
  24. 36
  25. 94
  26. 21
  27. 194
  28. 86
  29. 13
  30. 70
  31. 78
  32. 174
  33. 148
  34. 26
  35. 138
  36. 166
  37. 58
  38. 38
  39. 79
  40. 62

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