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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 845 · 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 144 =
  2. 2.Half of 152 =
  3. 3.Half of 62 =
  4. 4.Double 96 =
  5. 5.Double 78 =
  6. 6.Half of 32 =
  7. 7.Half of 198 =
  8. 8.Half of 88 =
  9. 9.Half of 108 =
  10. 10.Half of 182 =
  11. 11.Double 81 =
  12. 12.Half of 78 =
  13. 13.Double 99 =
  14. 14.Half of 132 =
  15. 15.Double 46 =
  16. 16.Double 56 =
  17. 17.Double 44 =
  18. 18.Double 64 =
  19. 19.Half of 82 =
  20. 20.Double 72 =
  21. 21.Double 12 =
  22. 22.Half of 102 =
  23. 23.Double 48 =
  24. 24.Half of 48 =
  25. 25.Double 16 =
  26. 26.Double 39 =
  27. 27.Double 31 =
  28. 28.Half of 26 =
  29. 29.Half of 184 =
  30. 30.Double 91 =
  31. 31.Half of 42 =
  32. 32.Double 93 =
  33. 33.Double 68 =
  34. 34.Double 13 =
  35. 35.Double 98 =
  36. 36.Half of 148 =
  37. 37.Half of 12 =
  38. 38.Double 87 =
  39. 39.Half of 156 =
  40. 40.Double 33 =

Answer key

  1. 72
  2. 76
  3. 31
  4. 192
  5. 156
  6. 16
  7. 99
  8. 44
  9. 54
  10. 91
  11. 162
  12. 39
  13. 198
  14. 66
  15. 92
  16. 112
  17. 88
  18. 128
  19. 41
  20. 144
  21. 24
  22. 51
  23. 96
  24. 24
  25. 32
  26. 78
  27. 62
  28. 13
  29. 92
  30. 182
  31. 21
  32. 186
  33. 136
  34. 26
  35. 196
  36. 74
  37. 6
  38. 174
  39. 78
  40. 66

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