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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 467 · 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 16 =
  2. 2.Half of 18 =
  3. 3.Half of 162 =
  4. 4.Half of 184 =
  5. 5.Double 52 =
  6. 6.Double 62 =
  7. 7.Half of 194 =
  8. 8.Double 26 =
  9. 9.Half of 44 =
  10. 10.Half of 68 =
  11. 11.Half of 166 =
  12. 12.Half of 36 =
  13. 13.Half of 42 =
  14. 14.Double 69 =
  15. 15.Double 47 =
  16. 16.Double 28 =
  17. 17.Double 77 =
  18. 18.Half of 104 =
  19. 19.Half of 22 =
  20. 20.Double 88 =
  21. 21.Double 97 =
  22. 22.Half of 178 =
  23. 23.Double 66 =
  24. 24.Half of 136 =
  25. 25.Double 19 =
  26. 26.Double 38 =
  27. 27.Double 81 =
  28. 28.Double 91 =
  29. 29.Half of 84 =
  30. 30.Half of 52 =
  31. 31.Double 64 =
  32. 32.Double 68 =
  33. 33.Double 75 =
  34. 34.Double 11 =
  35. 35.Half of 182 =
  36. 36.Double 59 =
  37. 37.Double 24 =
  38. 38.Double 34 =
  39. 39.Half of 172 =
  40. 40.Half of 64 =

Answer key

  1. 8
  2. 9
  3. 81
  4. 92
  5. 104
  6. 124
  7. 97
  8. 52
  9. 22
  10. 34
  11. 83
  12. 18
  13. 21
  14. 138
  15. 94
  16. 56
  17. 154
  18. 52
  19. 11
  20. 176
  21. 194
  22. 89
  23. 132
  24. 68
  25. 38
  26. 76
  27. 162
  28. 182
  29. 42
  30. 26
  31. 128
  32. 136
  33. 150
  34. 22
  35. 91
  36. 118
  37. 48
  38. 68
  39. 86
  40. 32

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