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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 876 · 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 92 =
  2. 2.Double 19 =
  3. 3.Half of 24 =
  4. 4.Double 93 =
  5. 5.Double 36 =
  6. 6.Half of 66 =
  7. 7.Half of 168 =
  8. 8.Double 79 =
  9. 9.Double 62 =
  10. 10.Double 41 =
  11. 11.Half of 98 =
  12. 12.Double 47 =
  13. 13.Double 94 =
  14. 14.Half of 116 =
  15. 15.Double 81 =
  16. 16.Half of 132 =
  17. 17.Half of 162 =
  18. 18.Double 69 =
  19. 19.Double 61 =
  20. 20.Double 39 =
  21. 21.Double 89 =
  22. 22.Half of 192 =
  23. 23.Double 58 =
  24. 24.Double 18 =
  25. 25.Half of 82 =
  26. 26.Half of 174 =
  27. 27.Double 59 =
  28. 28.Double 74 =
  29. 29.Double 88 =
  30. 30.Half of 134 =
  31. 31.Double 29 =
  32. 32.Double 98 =
  33. 33.Double 68 =
  34. 34.Double 77 =
  35. 35.Double 16 =
  36. 36.Half of 152 =
  37. 37.Double 12 =
  38. 38.Double 23 =
  39. 39.Double 35 =
  40. 40.Double 73 =

Answer key

  1. 46
  2. 38
  3. 12
  4. 186
  5. 72
  6. 33
  7. 84
  8. 158
  9. 124
  10. 82
  11. 49
  12. 94
  13. 188
  14. 58
  15. 162
  16. 66
  17. 81
  18. 138
  19. 122
  20. 78
  21. 178
  22. 96
  23. 116
  24. 36
  25. 41
  26. 87
  27. 118
  28. 148
  29. 176
  30. 67
  31. 58
  32. 196
  33. 136
  34. 154
  35. 32
  36. 76
  37. 24
  38. 46
  39. 70
  40. 146

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