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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 61 · 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 63 =
  2. 2.Double 78 =
  3. 3.Half of 52 =
  4. 4.Double 15 =
  5. 5.Half of 76 =
  6. 6.Half of 48 =
  7. 7.Double 79 =
  8. 8.Half of 54 =
  9. 9.Half of 92 =
  10. 10.Half of 182 =
  11. 11.Half of 22 =
  12. 12.Double 17 =
  13. 13.Double 99 =
  14. 14.Double 38 =
  15. 15.Double 37 =
  16. 16.Half of 78 =
  17. 17.Double 35 =
  18. 18.Double 33 =
  19. 19.Double 31 =
  20. 20.Half of 68 =
  21. 21.Half of 84 =
  22. 22.Half of 198 =
  23. 23.Half of 44 =
  24. 24.Half of 108 =
  25. 25.Half of 134 =
  26. 26.Double 91 =
  27. 27.Half of 152 =
  28. 28.Double 21 =
  29. 29.Double 16 =
  30. 30.Double 82 =
  31. 31.Double 93 =
  32. 32.Double 76 =
  33. 33.Half of 62 =
  34. 34.Half of 32 =
  35. 35.Double 61 =
  36. 36.Double 89 =
  37. 37.Half of 14 =
  38. 38.Half of 72 =
  39. 39.Double 32 =
  40. 40.Half of 124 =

Answer key

  1. 126
  2. 156
  3. 26
  4. 30
  5. 38
  6. 24
  7. 158
  8. 27
  9. 46
  10. 91
  11. 11
  12. 34
  13. 198
  14. 76
  15. 74
  16. 39
  17. 70
  18. 66
  19. 62
  20. 34
  21. 42
  22. 99
  23. 22
  24. 54
  25. 67
  26. 182
  27. 76
  28. 42
  29. 32
  30. 164
  31. 186
  32. 152
  33. 31
  34. 16
  35. 122
  36. 178
  37. 7
  38. 36
  39. 64
  40. 62

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