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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 58 · 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 196 =
  2. 2.Half of 74 =
  3. 3.Double 13 =
  4. 4.Double 82 =
  5. 5.Half of 136 =
  6. 6.Double 96 =
  7. 7.Double 41 =
  8. 8.Double 47 =
  9. 9.Double 81 =
  10. 10.Half of 82 =
  11. 11.Double 42 =
  12. 12.Double 85 =
  13. 13.Half of 126 =
  14. 14.Double 89 =
  15. 15.Double 39 =
  16. 16.Half of 172 =
  17. 17.Double 18 =
  18. 18.Half of 48 =
  19. 19.Half of 44 =
  20. 20.Half of 142 =
  21. 21.Double 92 =
  22. 22.Half of 112 =
  23. 23.Half of 114 =
  24. 24.Double 86 =
  25. 25.Double 88 =
  26. 26.Half of 52 =
  27. 27.Double 28 =
  28. 28.Double 31 =
  29. 29.Half of 168 =
  30. 30.Half of 54 =
  31. 31.Double 56 =
  32. 32.Double 63 =
  33. 33.Half of 106 =
  34. 34.Double 12 =
  35. 35.Half of 66 =
  36. 36.Double 44 =
  37. 37.Double 97 =
  38. 38.Half of 84 =
  39. 39.Double 93 =
  40. 40.Half of 46 =

Answer key

  1. 98
  2. 37
  3. 26
  4. 164
  5. 68
  6. 192
  7. 82
  8. 94
  9. 162
  10. 41
  11. 84
  12. 170
  13. 63
  14. 178
  15. 78
  16. 86
  17. 36
  18. 24
  19. 22
  20. 71
  21. 184
  22. 56
  23. 57
  24. 172
  25. 176
  26. 26
  27. 56
  28. 62
  29. 84
  30. 27
  31. 112
  32. 126
  33. 53
  34. 24
  35. 33
  36. 88
  37. 194
  38. 42
  39. 186
  40. 23

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