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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 110 · 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 44 =
  2. 2.Double 41 =
  3. 3.Half of 192 =
  4. 4.Double 18 =
  5. 5.Half of 22 =
  6. 6.Double 27 =
  7. 7.Double 16 =
  8. 8.Double 45 =
  9. 9.Half of 24 =
  10. 10.Double 78 =
  11. 11.Half of 176 =
  12. 12.Double 98 =
  13. 13.Half of 86 =
  14. 14.Double 35 =
  15. 15.Double 63 =
  16. 16.Half of 132 =
  17. 17.Double 76 =
  18. 18.Double 12 =
  19. 19.Double 15 =
  20. 20.Half of 112 =
  21. 21.Double 75 =
  22. 22.Double 91 =
  23. 23.Double 85 =
  24. 24.Half of 48 =
  25. 25.Half of 178 =
  26. 26.Double 39 =
  27. 27.Double 25 =
  28. 28.Half of 154 =
  29. 29.Half of 136 =
  30. 30.Double 47 =
  31. 31.Half of 194 =
  32. 32.Half of 102 =
  33. 33.Double 48 =
  34. 34.Double 92 =
  35. 35.Half of 68 =
  36. 36.Half of 36 =
  37. 37.Half of 92 =
  38. 38.Half of 172 =
  39. 39.Half of 188 =
  40. 40.Double 19 =

Answer key

  1. 22
  2. 82
  3. 96
  4. 36
  5. 11
  6. 54
  7. 32
  8. 90
  9. 12
  10. 156
  11. 88
  12. 196
  13. 43
  14. 70
  15. 126
  16. 66
  17. 152
  18. 24
  19. 30
  20. 56
  21. 150
  22. 182
  23. 170
  24. 24
  25. 89
  26. 78
  27. 50
  28. 77
  29. 68
  30. 94
  31. 97
  32. 51
  33. 96
  34. 184
  35. 34
  36. 18
  37. 46
  38. 86
  39. 94
  40. 38

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