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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 172 · 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 88 =
  2. 2.Double 96 =
  3. 3.Half of 162 =
  4. 4.Double 68 =
  5. 5.Double 21 =
  6. 6.Double 36 =
  7. 7.Half of 104 =
  8. 8.Double 65 =
  9. 9.Double 71 =
  10. 10.Half of 172 =
  11. 11.Double 45 =
  12. 12.Double 31 =
  13. 13.Half of 124 =
  14. 14.Half of 146 =
  15. 15.Half of 62 =
  16. 16.Double 52 =
  17. 17.Double 11 =
  18. 18.Double 44 =
  19. 19.Half of 98 =
  20. 20.Half of 194 =
  21. 21.Double 57 =
  22. 22.Double 97 =
  23. 23.Half of 144 =
  24. 24.Double 28 =
  25. 25.Half of 128 =
  26. 26.Half of 72 =
  27. 27.Half of 182 =
  28. 28.Double 72 =
  29. 29.Double 82 =
  30. 30.Double 23 =
  31. 31.Double 99 =
  32. 32.Half of 52 =
  33. 33.Double 27 =
  34. 34.Double 69 =
  35. 35.Half of 198 =
  36. 36.Double 81 =
  37. 37.Half of 28 =
  38. 38.Double 26 =
  39. 39.Half of 36 =
  40. 40.Half of 48 =

Answer key

  1. 176
  2. 192
  3. 81
  4. 136
  5. 42
  6. 72
  7. 52
  8. 130
  9. 142
  10. 86
  11. 90
  12. 62
  13. 62
  14. 73
  15. 31
  16. 104
  17. 22
  18. 88
  19. 49
  20. 97
  21. 114
  22. 194
  23. 72
  24. 56
  25. 64
  26. 36
  27. 91
  28. 144
  29. 164
  30. 46
  31. 198
  32. 26
  33. 54
  34. 138
  35. 99
  36. 162
  37. 14
  38. 52
  39. 18
  40. 24

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