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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 746 · 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 95 =
  3. 3.Half of 194 =
  4. 4.Half of 154 =
  5. 5.Half of 52 =
  6. 6.Double 98 =
  7. 7.Double 37 =
  8. 8.Double 55 =
  9. 9.Half of 108 =
  10. 10.Double 53 =
  11. 11.Double 34 =
  12. 12.Double 57 =
  13. 13.Double 94 =
  14. 14.Double 64 =
  15. 15.Double 61 =
  16. 16.Half of 192 =
  17. 17.Half of 12 =
  18. 18.Half of 42 =
  19. 19.Double 74 =
  20. 20.Half of 58 =
  21. 21.Half of 82 =
  22. 22.Double 87 =
  23. 23.Double 18 =
  24. 24.Half of 54 =
  25. 25.Half of 112 =
  26. 26.Double 38 =
  27. 27.Double 51 =
  28. 28.Half of 64 =
  29. 29.Half of 102 =
  30. 30.Half of 18 =
  31. 31.Double 76 =
  32. 32.Double 27 =
  33. 33.Double 81 =
  34. 34.Half of 92 =
  35. 35.Half of 162 =
  36. 36.Half of 182 =
  37. 37.Double 75 =
  38. 38.Half of 48 =
  39. 39.Double 36 =
  40. 40.Half of 172 =

Answer key

  1. 57
  2. 190
  3. 97
  4. 77
  5. 26
  6. 196
  7. 74
  8. 110
  9. 54
  10. 106
  11. 68
  12. 114
  13. 188
  14. 128
  15. 122
  16. 96
  17. 6
  18. 21
  19. 148
  20. 29
  21. 41
  22. 174
  23. 36
  24. 27
  25. 56
  26. 76
  27. 102
  28. 32
  29. 51
  30. 9
  31. 152
  32. 54
  33. 162
  34. 46
  35. 81
  36. 91
  37. 150
  38. 24
  39. 72
  40. 86

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