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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 160 · 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 74 =
  2. 2.Half of 18 =
  3. 3.Double 64 =
  4. 4.Double 91 =
  5. 5.Half of 174 =
  6. 6.Half of 72 =
  7. 7.Half of 112 =
  8. 8.Double 69 =
  9. 9.Double 21 =
  10. 10.Double 61 =
  11. 11.Double 85 =
  12. 12.Half of 168 =
  13. 13.Double 26 =
  14. 14.Double 17 =
  15. 15.Half of 96 =
  16. 16.Half of 66 =
  17. 17.Half of 24 =
  18. 18.Half of 48 =
  19. 19.Double 37 =
  20. 20.Double 42 =
  21. 21.Double 25 =
  22. 22.Double 75 =
  23. 23.Double 67 =
  24. 24.Double 29 =
  25. 25.Double 33 =
  26. 26.Half of 44 =
  27. 27.Double 71 =
  28. 28.Double 76 =
  29. 29.Half of 92 =
  30. 30.Half of 22 =
  31. 31.Double 53 =
  32. 32.Double 12 =
  33. 33.Half of 184 =
  34. 34.Half of 192 =
  35. 35.Half of 124 =
  36. 36.Double 81 =
  37. 37.Half of 176 =
  38. 38.Double 28 =
  39. 39.Half of 134 =
  40. 40.Half of 188 =

Answer key

  1. 37
  2. 9
  3. 128
  4. 182
  5. 87
  6. 36
  7. 56
  8. 138
  9. 42
  10. 122
  11. 170
  12. 84
  13. 52
  14. 34
  15. 48
  16. 33
  17. 12
  18. 24
  19. 74
  20. 84
  21. 50
  22. 150
  23. 134
  24. 58
  25. 66
  26. 22
  27. 142
  28. 152
  29. 46
  30. 11
  31. 106
  32. 24
  33. 92
  34. 96
  35. 62
  36. 162
  37. 88
  38. 56
  39. 67
  40. 94

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