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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 895 · 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 26 =
  2. 2.Double 77 =
  3. 3.Double 39 =
  4. 4.Half of 142 =
  5. 5.Double 92 =
  6. 6.Half of 146 =
  7. 7.Half of 54 =
  8. 8.Half of 192 =
  9. 9.Double 23 =
  10. 10.Double 36 =
  11. 11.Double 74 =
  12. 12.Half of 66 =
  13. 13.Half of 122 =
  14. 14.Half of 144 =
  15. 15.Half of 158 =
  16. 16.Double 91 =
  17. 17.Double 51 =
  18. 18.Double 94 =
  19. 19.Half of 196 =
  20. 20.Double 73 =
  21. 21.Double 61 =
  22. 22.Double 28 =
  23. 23.Half of 24 =
  24. 24.Half of 18 =
  25. 25.Double 55 =
  26. 26.Half of 22 =
  27. 27.Half of 16 =
  28. 28.Half of 92 =
  29. 29.Half of 36 =
  30. 30.Half of 62 =
  31. 31.Half of 88 =
  32. 32.Double 41 =
  33. 33.Half of 82 =
  34. 34.Double 33 =
  35. 35.Double 97 =
  36. 36.Double 69 =
  37. 37.Half of 86 =
  38. 38.Half of 46 =
  39. 39.Double 71 =
  40. 40.Double 81 =

Answer key

  1. 13
  2. 154
  3. 78
  4. 71
  5. 184
  6. 73
  7. 27
  8. 96
  9. 46
  10. 72
  11. 148
  12. 33
  13. 61
  14. 72
  15. 79
  16. 182
  17. 102
  18. 188
  19. 98
  20. 146
  21. 122
  22. 56
  23. 12
  24. 9
  25. 110
  26. 11
  27. 8
  28. 46
  29. 18
  30. 31
  31. 44
  32. 82
  33. 41
  34. 66
  35. 194
  36. 138
  37. 43
  38. 23
  39. 142
  40. 162

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