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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 554 · 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 186 =
  2. 2.Double 16 =
  3. 3.Double 17 =
  4. 4.Double 58 =
  5. 5.Half of 12 =
  6. 6.Double 61 =
  7. 7.Half of 192 =
  8. 8.Double 36 =
  9. 9.Double 38 =
  10. 10.Half of 36 =
  11. 11.Double 14 =
  12. 12.Double 11 =
  13. 13.Half of 162 =
  14. 14.Double 28 =
  15. 15.Half of 44 =
  16. 16.Half of 42 =
  17. 17.Double 41 =
  18. 18.Half of 32 =
  19. 19.Double 68 =
  20. 20.Double 91 =
  21. 21.Double 53 =
  22. 22.Half of 68 =
  23. 23.Double 45 =
  24. 24.Half of 66 =
  25. 25.Double 89 =
  26. 26.Double 27 =
  27. 27.Half of 96 =
  28. 28.Double 97 =
  29. 29.Double 39 =
  30. 30.Double 26 =
  31. 31.Double 13 =
  32. 32.Double 98 =
  33. 33.Double 93 =
  34. 34.Double 71 =
  35. 35.Half of 102 =
  36. 36.Half of 126 =
  37. 37.Double 88 =
  38. 38.Half of 196 =
  39. 39.Double 72 =
  40. 40.Half of 28 =

Answer key

  1. 93
  2. 32
  3. 34
  4. 116
  5. 6
  6. 122
  7. 96
  8. 72
  9. 76
  10. 18
  11. 28
  12. 22
  13. 81
  14. 56
  15. 22
  16. 21
  17. 82
  18. 16
  19. 136
  20. 182
  21. 106
  22. 34
  23. 90
  24. 33
  25. 178
  26. 54
  27. 48
  28. 194
  29. 78
  30. 52
  31. 26
  32. 196
  33. 186
  34. 142
  35. 51
  36. 63
  37. 176
  38. 98
  39. 144
  40. 14

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