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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 560 · 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 162 =
  2. 2.Half of 112 =
  3. 3.Double 25 =
  4. 4.Half of 12 =
  5. 5.Double 48 =
  6. 6.Double 68 =
  7. 7.Double 69 =
  8. 8.Half of 96 =
  9. 9.Double 78 =
  10. 10.Half of 164 =
  11. 11.Double 59 =
  12. 12.Double 91 =
  13. 13.Double 83 =
  14. 14.Half of 52 =
  15. 15.Double 55 =
  16. 16.Double 41 =
  17. 17.Double 21 =
  18. 18.Half of 172 =
  19. 19.Half of 108 =
  20. 20.Double 31 =
  21. 21.Double 12 =
  22. 22.Double 63 =
  23. 23.Double 17 =
  24. 24.Double 95 =
  25. 25.Half of 184 =
  26. 26.Half of 118 =
  27. 27.Double 34 =
  28. 28.Double 65 =
  29. 29.Double 93 =
  30. 30.Double 73 =
  31. 31.Double 43 =
  32. 32.Double 23 =
  33. 33.Double 97 =
  34. 34.Half of 42 =
  35. 35.Half of 92 =
  36. 36.Half of 106 =
  37. 37.Half of 54 =
  38. 38.Half of 72 =
  39. 39.Double 28 =
  40. 40.Double 11 =

Answer key

  1. 81
  2. 56
  3. 50
  4. 6
  5. 96
  6. 136
  7. 138
  8. 48
  9. 156
  10. 82
  11. 118
  12. 182
  13. 166
  14. 26
  15. 110
  16. 82
  17. 42
  18. 86
  19. 54
  20. 62
  21. 24
  22. 126
  23. 34
  24. 190
  25. 92
  26. 59
  27. 68
  28. 130
  29. 186
  30. 146
  31. 86
  32. 46
  33. 194
  34. 21
  35. 46
  36. 53
  37. 27
  38. 36
  39. 56
  40. 22

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