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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 491 · 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 16 =
  2. 2.Half of 184 =
  3. 3.Half of 136 =
  4. 4.Half of 14 =
  5. 5.Double 38 =
  6. 6.Double 59 =
  7. 7.Double 73 =
  8. 8.Half of 128 =
  9. 9.Double 21 =
  10. 10.Half of 42 =
  11. 11.Double 31 =
  12. 12.Double 61 =
  13. 13.Half of 122 =
  14. 14.Half of 74 =
  15. 15.Half of 34 =
  16. 16.Double 85 =
  17. 17.Double 13 =
  18. 18.Half of 196 =
  19. 19.Half of 192 =
  20. 20.Double 98 =
  21. 21.Half of 138 =
  22. 22.Double 47 =
  23. 23.Double 26 =
  24. 24.Double 72 =
  25. 25.Half of 102 =
  26. 26.Half of 124 =
  27. 27.Half of 46 =
  28. 28.Double 12 =
  29. 29.Double 76 =
  30. 30.Double 18 =
  31. 31.Double 11 =
  32. 32.Double 48 =
  33. 33.Half of 58 =
  34. 34.Half of 22 =
  35. 35.Half of 38 =
  36. 36.Half of 186 =
  37. 37.Double 16 =
  38. 38.Half of 174 =
  39. 39.Double 32 =
  40. 40.Half of 36 =

Answer key

  1. 8
  2. 92
  3. 68
  4. 7
  5. 76
  6. 118
  7. 146
  8. 64
  9. 42
  10. 21
  11. 62
  12. 122
  13. 61
  14. 37
  15. 17
  16. 170
  17. 26
  18. 98
  19. 96
  20. 196
  21. 69
  22. 94
  23. 52
  24. 144
  25. 51
  26. 62
  27. 23
  28. 24
  29. 152
  30. 36
  31. 22
  32. 96
  33. 29
  34. 11
  35. 19
  36. 93
  37. 32
  38. 87
  39. 64
  40. 18

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