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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 115 · 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 13 =
  2. 2.Half of 112 =
  3. 3.Half of 58 =
  4. 4.Double 53 =
  5. 5.Half of 42 =
  6. 6.Double 58 =
  7. 7.Double 31 =
  8. 8.Half of 188 =
  9. 9.Double 79 =
  10. 10.Double 62 =
  11. 11.Double 85 =
  12. 12.Half of 56 =
  13. 13.Half of 172 =
  14. 14.Half of 72 =
  15. 15.Half of 176 =
  16. 16.Double 36 =
  17. 17.Half of 84 =
  18. 18.Half of 34 =
  19. 19.Half of 64 =
  20. 20.Double 54 =
  21. 21.Half of 138 =
  22. 22.Double 14 =
  23. 23.Half of 48 =
  24. 24.Double 86 =
  25. 25.Double 41 =
  26. 26.Double 24 =
  27. 27.Double 33 =
  28. 28.Half of 62 =
  29. 29.Double 19 =
  30. 30.Half of 82 =
  31. 31.Double 88 =
  32. 32.Half of 96 =
  33. 33.Half of 32 =
  34. 34.Double 92 =
  35. 35.Half of 154 =
  36. 36.Half of 182 =
  37. 37.Half of 162 =
  38. 38.Double 93 =
  39. 39.Half of 148 =
  40. 40.Half of 122 =

Answer key

  1. 26
  2. 56
  3. 29
  4. 106
  5. 21
  6. 116
  7. 62
  8. 94
  9. 158
  10. 124
  11. 170
  12. 28
  13. 86
  14. 36
  15. 88
  16. 72
  17. 42
  18. 17
  19. 32
  20. 108
  21. 69
  22. 28
  23. 24
  24. 172
  25. 82
  26. 48
  27. 66
  28. 31
  29. 38
  30. 41
  31. 176
  32. 48
  33. 16
  34. 184
  35. 77
  36. 91
  37. 81
  38. 186
  39. 74
  40. 61

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