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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 926 · 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 104 =
  2. 2.Half of 98 =
  3. 3.Half of 132 =
  4. 4.Double 57 =
  5. 5.Double 18 =
  6. 6.Half of 198 =
  7. 7.Half of 184 =
  8. 8.Half of 64 =
  9. 9.Half of 168 =
  10. 10.Half of 142 =
  11. 11.Half of 166 =
  12. 12.Half of 176 =
  13. 13.Double 45 =
  14. 14.Double 91 =
  15. 15.Double 81 =
  16. 16.Double 31 =
  17. 17.Double 49 =
  18. 18.Double 59 =
  19. 19.Half of 196 =
  20. 20.Half of 154 =
  21. 21.Half of 112 =
  22. 22.Double 56 =
  23. 23.Half of 186 =
  24. 24.Double 34 =
  25. 25.Half of 32 =
  26. 26.Double 97 =
  27. 27.Half of 44 =
  28. 28.Double 13 =
  29. 29.Half of 126 =
  30. 30.Double 43 =
  31. 31.Half of 124 =
  32. 32.Half of 164 =
  33. 33.Double 48 =
  34. 34.Double 55 =
  35. 35.Half of 134 =
  36. 36.Half of 146 =
  37. 37.Half of 174 =
  38. 38.Double 41 =
  39. 39.Double 74 =
  40. 40.Double 63 =

Answer key

  1. 52
  2. 49
  3. 66
  4. 114
  5. 36
  6. 99
  7. 92
  8. 32
  9. 84
  10. 71
  11. 83
  12. 88
  13. 90
  14. 182
  15. 162
  16. 62
  17. 98
  18. 118
  19. 98
  20. 77
  21. 56
  22. 112
  23. 93
  24. 68
  25. 16
  26. 194
  27. 22
  28. 26
  29. 63
  30. 86
  31. 62
  32. 82
  33. 96
  34. 110
  35. 67
  36. 73
  37. 87
  38. 82
  39. 148
  40. 126

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