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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 561 · 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 48 =
  2. 2.Double 54 =
  3. 3.Half of 22 =
  4. 4.Double 92 =
  5. 5.Double 64 =
  6. 6.Half of 172 =
  7. 7.Half of 52 =
  8. 8.Double 18 =
  9. 9.Double 51 =
  10. 10.Double 81 =
  11. 11.Double 28 =
  12. 12.Double 76 =
  13. 13.Half of 12 =
  14. 14.Half of 152 =
  15. 15.Half of 176 =
  16. 16.Double 11 =
  17. 17.Double 89 =
  18. 18.Half of 108 =
  19. 19.Double 49 =
  20. 20.Half of 54 =
  21. 21.Double 93 =
  22. 22.Half of 42 =
  23. 23.Half of 96 =
  24. 24.Double 94 =
  25. 25.Double 87 =
  26. 26.Double 21 =
  27. 27.Double 41 =
  28. 28.Half of 32 =
  29. 29.Half of 74 =
  30. 30.Double 53 =
  31. 31.Double 66 =
  32. 32.Half of 136 =
  33. 33.Double 98 =
  34. 34.Half of 178 =
  35. 35.Double 65 =
  36. 36.Half of 174 =
  37. 37.Half of 26 =
  38. 38.Double 38 =
  39. 39.Double 27 =
  40. 40.Half of 62 =

Answer key

  1. 24
  2. 108
  3. 11
  4. 184
  5. 128
  6. 86
  7. 26
  8. 36
  9. 102
  10. 162
  11. 56
  12. 152
  13. 6
  14. 76
  15. 88
  16. 22
  17. 178
  18. 54
  19. 98
  20. 27
  21. 186
  22. 21
  23. 48
  24. 188
  25. 174
  26. 42
  27. 82
  28. 16
  29. 37
  30. 106
  31. 132
  32. 68
  33. 196
  34. 89
  35. 130
  36. 87
  37. 13
  38. 76
  39. 54
  40. 31

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