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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 953 · 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.Double 42 =
  2. 2.Half of 64 =
  3. 3.Half of 32 =
  4. 4.Half of 28 =
  5. 5.Half of 132 =
  6. 6.Double 72 =
  7. 7.Half of 178 =
  8. 8.Half of 74 =
  9. 9.Double 52 =
  10. 10.Double 68 =
  11. 11.Double 41 =
  12. 12.Double 24 =
  13. 13.Half of 22 =
  14. 14.Double 48 =
  15. 15.Double 81 =
  16. 16.Double 79 =
  17. 17.Half of 52 =
  18. 18.Double 31 =
  19. 19.Half of 62 =
  20. 20.Half of 192 =
  21. 21.Double 28 =
  22. 22.Half of 152 =
  23. 23.Half of 18 =
  24. 24.Half of 96 =
  25. 25.Double 57 =
  26. 26.Half of 126 =
  27. 27.Half of 164 =
  28. 28.Half of 84 =
  29. 29.Half of 182 =
  30. 30.Double 85 =
  31. 31.Half of 162 =
  32. 32.Double 45 =
  33. 33.Half of 116 =
  34. 34.Double 66 =
  35. 35.Half of 156 =
  36. 36.Double 84 =
  37. 37.Double 18 =
  38. 38.Double 95 =
  39. 39.Double 19 =
  40. 40.Half of 102 =

Answer key

  1. 84
  2. 32
  3. 16
  4. 14
  5. 66
  6. 144
  7. 89
  8. 37
  9. 104
  10. 136
  11. 82
  12. 48
  13. 11
  14. 96
  15. 162
  16. 158
  17. 26
  18. 62
  19. 31
  20. 96
  21. 56
  22. 76
  23. 9
  24. 48
  25. 114
  26. 63
  27. 82
  28. 42
  29. 91
  30. 170
  31. 81
  32. 90
  33. 58
  34. 132
  35. 78
  36. 168
  37. 36
  38. 190
  39. 38
  40. 51

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