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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 906 · 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 64 =
  2. 2.Double 43 =
  3. 3.Half of 188 =
  4. 4.Half of 118 =
  5. 5.Double 51 =
  6. 6.Double 99 =
  7. 7.Double 21 =
  8. 8.Half of 136 =
  9. 9.Half of 98 =
  10. 10.Double 33 =
  11. 11.Half of 62 =
  12. 12.Double 74 =
  13. 13.Double 71 =
  14. 14.Double 66 =
  15. 15.Double 98 =
  16. 16.Half of 182 =
  17. 17.Half of 82 =
  18. 18.Half of 132 =
  19. 19.Double 25 =
  20. 20.Double 42 =
  21. 21.Half of 106 =
  22. 22.Half of 144 =
  23. 23.Double 87 =
  24. 24.Half of 142 =
  25. 25.Half of 54 =
  26. 26.Half of 26 =
  27. 27.Double 95 =
  28. 28.Half of 158 =
  29. 29.Half of 108 =
  30. 30.Double 69 =
  31. 31.Half of 192 =
  32. 32.Double 16 =
  33. 33.Half of 116 =
  34. 34.Double 39 =
  35. 35.Double 29 =
  36. 36.Double 58 =
  37. 37.Half of 44 =
  38. 38.Half of 36 =
  39. 39.Double 54 =
  40. 40.Half of 168 =

Answer key

  1. 32
  2. 86
  3. 94
  4. 59
  5. 102
  6. 198
  7. 42
  8. 68
  9. 49
  10. 66
  11. 31
  12. 148
  13. 142
  14. 132
  15. 196
  16. 91
  17. 41
  18. 66
  19. 50
  20. 84
  21. 53
  22. 72
  23. 174
  24. 71
  25. 27
  26. 13
  27. 190
  28. 79
  29. 54
  30. 138
  31. 96
  32. 32
  33. 58
  34. 78
  35. 58
  36. 116
  37. 22
  38. 18
  39. 108
  40. 84

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