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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 956 · 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 54 =
  2. 2.Half of 146 =
  3. 3.Half of 148 =
  4. 4.Double 86 =
  5. 5.Half of 178 =
  6. 6.Double 79 =
  7. 7.Double 15 =
  8. 8.Half of 112 =
  9. 9.Half of 104 =
  10. 10.Double 91 =
  11. 11.Half of 154 =
  12. 12.Half of 102 =
  13. 13.Double 92 =
  14. 14.Double 24 =
  15. 15.Half of 92 =
  16. 16.Half of 192 =
  17. 17.Double 31 =
  18. 18.Half of 134 =
  19. 19.Half of 188 =
  20. 20.Half of 196 =
  21. 21.Half of 66 =
  22. 22.Double 63 =
  23. 23.Half of 52 =
  24. 24.Half of 64 =
  25. 25.Double 52 =
  26. 26.Half of 12 =
  27. 27.Half of 18 =
  28. 28.Double 68 =
  29. 29.Half of 68 =
  30. 30.Double 55 =
  31. 31.Double 83 =
  32. 32.Half of 106 =
  33. 33.Double 51 =
  34. 34.Half of 16 =
  35. 35.Double 53 =
  36. 36.Double 32 =
  37. 37.Double 54 =
  38. 38.Double 69 =
  39. 39.Half of 82 =
  40. 40.Half of 88 =

Answer key

  1. 27
  2. 73
  3. 74
  4. 172
  5. 89
  6. 158
  7. 30
  8. 56
  9. 52
  10. 182
  11. 77
  12. 51
  13. 184
  14. 48
  15. 46
  16. 96
  17. 62
  18. 67
  19. 94
  20. 98
  21. 33
  22. 126
  23. 26
  24. 32
  25. 104
  26. 6
  27. 9
  28. 136
  29. 34
  30. 110
  31. 166
  32. 53
  33. 102
  34. 8
  35. 106
  36. 64
  37. 108
  38. 138
  39. 41
  40. 44

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