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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 964 · 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 24 =
  2. 2.Half of 48 =
  3. 3.Double 67 =
  4. 4.Double 17 =
  5. 5.Half of 22 =
  6. 6.Half of 104 =
  7. 7.Half of 14 =
  8. 8.Double 62 =
  9. 9.Half of 102 =
  10. 10.Half of 78 =
  11. 11.Double 41 =
  12. 12.Double 26 =
  13. 13.Double 81 =
  14. 14.Half of 142 =
  15. 15.Double 31 =
  16. 16.Double 13 =
  17. 17.Double 79 =
  18. 18.Half of 162 =
  19. 19.Double 32 =
  20. 20.Double 91 =
  21. 21.Double 77 =
  22. 22.Double 37 =
  23. 23.Double 94 =
  24. 24.Half of 184 =
  25. 25.Double 14 =
  26. 26.Double 78 =
  27. 27.Half of 88 =
  28. 28.Double 63 =
  29. 29.Half of 28 =
  30. 30.Half of 62 =
  31. 31.Double 27 =
  32. 32.Half of 122 =
  33. 33.Double 83 =
  34. 34.Half of 198 =
  35. 35.Half of 158 =
  36. 36.Double 21 =
  37. 37.Half of 32 =
  38. 38.Double 92 =
  39. 39.Half of 192 =
  40. 40.Double 44 =

Answer key

  1. 12
  2. 24
  3. 134
  4. 34
  5. 11
  6. 52
  7. 7
  8. 124
  9. 51
  10. 39
  11. 82
  12. 52
  13. 162
  14. 71
  15. 62
  16. 26
  17. 158
  18. 81
  19. 64
  20. 182
  21. 154
  22. 74
  23. 188
  24. 92
  25. 28
  26. 156
  27. 44
  28. 126
  29. 14
  30. 31
  31. 54
  32. 61
  33. 166
  34. 99
  35. 79
  36. 42
  37. 16
  38. 184
  39. 96
  40. 88

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