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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 419 · 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 114 =
  2. 2.Double 98 =
  3. 3.Half of 32 =
  4. 4.Double 58 =
  5. 5.Half of 182 =
  6. 6.Half of 156 =
  7. 7.Double 93 =
  8. 8.Half of 122 =
  9. 9.Double 35 =
  10. 10.Half of 116 =
  11. 11.Double 11 =
  12. 12.Double 95 =
  13. 13.Double 48 =
  14. 14.Half of 44 =
  15. 15.Double 68 =
  16. 16.Double 44 =
  17. 17.Double 22 =
  18. 18.Half of 16 =
  19. 19.Half of 172 =
  20. 20.Double 91 =
  21. 21.Double 15 =
  22. 22.Double 85 =
  23. 23.Half of 14 =
  24. 24.Half of 134 =
  25. 25.Half of 58 =
  26. 26.Double 64 =
  27. 27.Double 18 =
  28. 28.Double 77 =
  29. 29.Double 94 =
  30. 30.Double 86 =
  31. 31.Double 84 =
  32. 32.Double 23 =
  33. 33.Half of 22 =
  34. 34.Double 34 =
  35. 35.Double 51 =
  36. 36.Half of 136 =
  37. 37.Half of 26 =
  38. 38.Double 61 =
  39. 39.Half of 92 =
  40. 40.Half of 112 =

Answer key

  1. 57
  2. 196
  3. 16
  4. 116
  5. 91
  6. 78
  7. 186
  8. 61
  9. 70
  10. 58
  11. 22
  12. 190
  13. 96
  14. 22
  15. 136
  16. 88
  17. 44
  18. 8
  19. 86
  20. 182
  21. 30
  22. 170
  23. 7
  24. 67
  25. 29
  26. 128
  27. 36
  28. 154
  29. 188
  30. 172
  31. 168
  32. 46
  33. 11
  34. 68
  35. 102
  36. 68
  37. 13
  38. 122
  39. 46
  40. 56

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