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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 744 · 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 29 =
  2. 2.Double 13 =
  3. 3.Double 18 =
  4. 4.Double 49 =
  5. 5.Double 36 =
  6. 6.Half of 52 =
  7. 7.Half of 66 =
  8. 8.Half of 74 =
  9. 9.Half of 88 =
  10. 10.Double 73 =
  11. 11.Half of 152 =
  12. 12.Double 91 =
  13. 13.Double 62 =
  14. 14.Half of 162 =
  15. 15.Double 23 =
  16. 16.Double 35 =
  17. 17.Half of 182 =
  18. 18.Double 19 =
  19. 19.Double 38 =
  20. 20.Half of 12 =
  21. 21.Double 46 =
  22. 22.Half of 42 =
  23. 23.Double 87 =
  24. 24.Half of 198 =
  25. 25.Half of 32 =
  26. 26.Half of 54 =
  27. 27.Double 25 =
  28. 28.Double 32 =
  29. 29.Half of 92 =
  30. 30.Double 77 =
  31. 31.Half of 36 =
  32. 32.Double 64 =
  33. 33.Double 56 =
  34. 34.Half of 16 =
  35. 35.Half of 94 =
  36. 36.Half of 14 =
  37. 37.Double 53 =
  38. 38.Double 34 =
  39. 39.Half of 172 =
  40. 40.Half of 102 =

Answer key

  1. 58
  2. 26
  3. 36
  4. 98
  5. 72
  6. 26
  7. 33
  8. 37
  9. 44
  10. 146
  11. 76
  12. 182
  13. 124
  14. 81
  15. 46
  16. 70
  17. 91
  18. 38
  19. 76
  20. 6
  21. 92
  22. 21
  23. 174
  24. 99
  25. 16
  26. 27
  27. 50
  28. 64
  29. 46
  30. 154
  31. 18
  32. 128
  33. 112
  34. 8
  35. 47
  36. 7
  37. 106
  38. 68
  39. 86
  40. 51

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