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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 413 · 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 176 =
  2. 2.Half of 178 =
  3. 3.Double 25 =
  4. 4.Double 13 =
  5. 5.Double 75 =
  6. 6.Half of 54 =
  7. 7.Half of 114 =
  8. 8.Double 35 =
  9. 9.Half of 156 =
  10. 10.Double 32 =
  11. 11.Half of 62 =
  12. 12.Double 55 =
  13. 13.Double 88 =
  14. 14.Double 47 =
  15. 15.Double 78 =
  16. 16.Half of 192 =
  17. 17.Half of 36 =
  18. 18.Double 11 =
  19. 19.Double 34 =
  20. 20.Half of 134 =
  21. 21.Double 15 =
  22. 22.Half of 28 =
  23. 23.Double 22 =
  24. 24.Double 16 =
  25. 25.Double 21 =
  26. 26.Double 41 =
  27. 27.Double 67 =
  28. 28.Double 29 =
  29. 29.Half of 148 =
  30. 30.Half of 72 =
  31. 31.Double 33 =
  32. 32.Double 48 =
  33. 33.Double 54 =
  34. 34.Double 43 =
  35. 35.Half of 82 =
  36. 36.Half of 12 =
  37. 37.Half of 136 =
  38. 38.Half of 132 =
  39. 39.Half of 146 =
  40. 40.Double 56 =

Answer key

  1. 88
  2. 89
  3. 50
  4. 26
  5. 150
  6. 27
  7. 57
  8. 70
  9. 78
  10. 64
  11. 31
  12. 110
  13. 176
  14. 94
  15. 156
  16. 96
  17. 18
  18. 22
  19. 68
  20. 67
  21. 30
  22. 14
  23. 44
  24. 32
  25. 42
  26. 82
  27. 134
  28. 58
  29. 74
  30. 36
  31. 66
  32. 96
  33. 108
  34. 86
  35. 41
  36. 6
  37. 68
  38. 66
  39. 73
  40. 112

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