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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 25 · 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 65 =
  2. 2.Half of 42 =
  3. 3.Half of 22 =
  4. 4.Half of 72 =
  5. 5.Half of 162 =
  6. 6.Half of 168 =
  7. 7.Half of 96 =
  8. 8.Half of 112 =
  9. 9.Half of 66 =
  10. 10.Double 31 =
  11. 11.Half of 16 =
  12. 12.Half of 184 =
  13. 13.Half of 34 =
  14. 14.Double 27 =
  15. 15.Double 16 =
  16. 16.Double 79 =
  17. 17.Half of 62 =
  18. 18.Double 44 =
  19. 19.Half of 28 =
  20. 20.Half of 44 =
  21. 21.Half of 86 =
  22. 22.Double 48 =
  23. 23.Double 61 =
  24. 24.Double 52 =
  25. 25.Double 57 =
  26. 26.Double 47 =
  27. 27.Half of 188 =
  28. 28.Double 18 =
  29. 29.Half of 142 =
  30. 30.Double 58 =
  31. 31.Half of 114 =
  32. 32.Half of 38 =
  33. 33.Double 69 =
  34. 34.Half of 156 =
  35. 35.Half of 32 =
  36. 36.Half of 194 =
  37. 37.Double 97 =
  38. 38.Double 84 =
  39. 39.Double 92 =
  40. 40.Double 22 =

Answer key

  1. 130
  2. 21
  3. 11
  4. 36
  5. 81
  6. 84
  7. 48
  8. 56
  9. 33
  10. 62
  11. 8
  12. 92
  13. 17
  14. 54
  15. 32
  16. 158
  17. 31
  18. 88
  19. 14
  20. 22
  21. 43
  22. 96
  23. 122
  24. 104
  25. 114
  26. 94
  27. 94
  28. 36
  29. 71
  30. 116
  31. 57
  32. 19
  33. 138
  34. 78
  35. 16
  36. 97
  37. 194
  38. 168
  39. 184
  40. 44

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