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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 882 · 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 12 =
  2. 2.Half of 46 =
  3. 3.Half of 192 =
  4. 4.Half of 78 =
  5. 5.Half of 118 =
  6. 6.Double 97 =
  7. 7.Double 51 =
  8. 8.Half of 168 =
  9. 9.Half of 62 =
  10. 10.Double 41 =
  11. 11.Double 22 =
  12. 12.Double 76 =
  13. 13.Half of 178 =
  14. 14.Half of 86 =
  15. 15.Half of 72 =
  16. 16.Half of 42 =
  17. 17.Half of 194 =
  18. 18.Half of 116 =
  19. 19.Double 64 =
  20. 20.Double 23 =
  21. 21.Double 98 =
  22. 22.Half of 134 =
  23. 23.Half of 142 =
  24. 24.Half of 184 =
  25. 25.Half of 106 =
  26. 26.Half of 32 =
  27. 27.Double 19 =
  28. 28.Double 71 =
  29. 29.Double 31 =
  30. 30.Half of 114 =
  31. 31.Half of 64 =
  32. 32.Half of 172 =
  33. 33.Half of 104 =
  34. 34.Double 66 =
  35. 35.Double 45 =
  36. 36.Half of 146 =
  37. 37.Half of 132 =
  38. 38.Double 88 =
  39. 39.Double 77 =
  40. 40.Double 95 =

Answer key

  1. 6
  2. 23
  3. 96
  4. 39
  5. 59
  6. 194
  7. 102
  8. 84
  9. 31
  10. 82
  11. 44
  12. 152
  13. 89
  14. 43
  15. 36
  16. 21
  17. 97
  18. 58
  19. 128
  20. 46
  21. 196
  22. 67
  23. 71
  24. 92
  25. 53
  26. 16
  27. 38
  28. 142
  29. 62
  30. 57
  31. 32
  32. 86
  33. 52
  34. 132
  35. 90
  36. 73
  37. 66
  38. 176
  39. 154
  40. 190

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