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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 312 · 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 41 =
  2. 2.Double 24 =
  3. 3.Half of 104 =
  4. 4.Double 31 =
  5. 5.Half of 42 =
  6. 6.Double 19 =
  7. 7.Half of 108 =
  8. 8.Double 94 =
  9. 9.Half of 78 =
  10. 10.Double 55 =
  11. 11.Double 61 =
  12. 12.Half of 154 =
  13. 13.Half of 132 =
  14. 14.Double 91 =
  15. 15.Double 32 =
  16. 16.Double 29 =
  17. 17.Double 15 =
  18. 18.Double 75 =
  19. 19.Double 67 =
  20. 20.Half of 68 =
  21. 21.Half of 152 =
  22. 22.Half of 124 =
  23. 23.Double 45 =
  24. 24.Half of 178 =
  25. 25.Double 39 =
  26. 26.Half of 14 =
  27. 27.Half of 22 =
  28. 28.Half of 112 =
  29. 29.Half of 76 =
  30. 30.Double 63 =
  31. 31.Double 26 =
  32. 32.Double 47 =
  33. 33.Half of 102 =
  34. 34.Half of 128 =
  35. 35.Half of 144 =
  36. 36.Double 98 =
  37. 37.Half of 12 =
  38. 38.Half of 44 =
  39. 39.Half of 176 =
  40. 40.Half of 66 =

Answer key

  1. 82
  2. 48
  3. 52
  4. 62
  5. 21
  6. 38
  7. 54
  8. 188
  9. 39
  10. 110
  11. 122
  12. 77
  13. 66
  14. 182
  15. 64
  16. 58
  17. 30
  18. 150
  19. 134
  20. 34
  21. 76
  22. 62
  23. 90
  24. 89
  25. 78
  26. 7
  27. 11
  28. 56
  29. 38
  30. 126
  31. 52
  32. 94
  33. 51
  34. 64
  35. 72
  36. 196
  37. 6
  38. 22
  39. 88
  40. 33

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