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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 481 · 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 36 =
  2. 2.Double 13 =
  3. 3.Double 77 =
  4. 4.Half of 176 =
  5. 5.Double 18 =
  6. 6.Half of 92 =
  7. 7.Half of 108 =
  8. 8.Half of 52 =
  9. 9.Double 48 =
  10. 10.Half of 172 =
  11. 11.Double 31 =
  12. 12.Half of 166 =
  13. 13.Double 41 =
  14. 14.Half of 72 =
  15. 15.Double 72 =
  16. 16.Half of 76 =
  17. 17.Double 52 =
  18. 18.Double 91 =
  19. 19.Half of 12 =
  20. 20.Half of 96 =
  21. 21.Double 17 =
  22. 22.Double 24 =
  23. 23.Double 65 =
  24. 24.Half of 116 =
  25. 25.Double 61 =
  26. 26.Double 64 =
  27. 27.Half of 56 =
  28. 28.Half of 32 =
  29. 29.Double 75 =
  30. 30.Half of 152 =
  31. 31.Half of 98 =
  32. 32.Half of 168 =
  33. 33.Double 27 =
  34. 34.Double 84 =
  35. 35.Double 23 =
  36. 36.Half of 62 =
  37. 37.Half of 198 =
  38. 38.Half of 48 =
  39. 39.Double 87 =
  40. 40.Half of 42 =

Answer key

  1. 72
  2. 26
  3. 154
  4. 88
  5. 36
  6. 46
  7. 54
  8. 26
  9. 96
  10. 86
  11. 62
  12. 83
  13. 82
  14. 36
  15. 144
  16. 38
  17. 104
  18. 182
  19. 6
  20. 48
  21. 34
  22. 48
  23. 130
  24. 58
  25. 122
  26. 128
  27. 28
  28. 16
  29. 150
  30. 76
  31. 49
  32. 84
  33. 54
  34. 168
  35. 46
  36. 31
  37. 99
  38. 24
  39. 174
  40. 21

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