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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 445 · 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.Double 35 =
  2. 2.Double 46 =
  3. 3.Half of 174 =
  4. 4.Double 71 =
  5. 5.Half of 162 =
  6. 6.Half of 96 =
  7. 7.Double 88 =
  8. 8.Half of 26 =
  9. 9.Double 41 =
  10. 10.Double 27 =
  11. 11.Half of 48 =
  12. 12.Half of 196 =
  13. 13.Half of 188 =
  14. 14.Half of 152 =
  15. 15.Double 42 =
  16. 16.Double 99 =
  17. 17.Half of 44 =
  18. 18.Half of 46 =
  19. 19.Double 52 =
  20. 20.Double 53 =
  21. 21.Double 66 =
  22. 22.Double 21 =
  23. 23.Half of 182 =
  24. 24.Double 81 =
  25. 25.Double 34 =
  26. 26.Half of 84 =
  27. 27.Double 47 =
  28. 28.Double 68 =
  29. 29.Half of 126 =
  30. 30.Double 91 =
  31. 31.Half of 104 =
  32. 32.Half of 74 =
  33. 33.Double 45 =
  34. 34.Half of 112 =
  35. 35.Double 29 =
  36. 36.Half of 92 =
  37. 37.Double 36 =
  38. 38.Double 86 =
  39. 39.Double 69 =
  40. 40.Double 26 =

Answer key

  1. 70
  2. 92
  3. 87
  4. 142
  5. 81
  6. 48
  7. 176
  8. 13
  9. 82
  10. 54
  11. 24
  12. 98
  13. 94
  14. 76
  15. 84
  16. 198
  17. 22
  18. 23
  19. 104
  20. 106
  21. 132
  22. 42
  23. 91
  24. 162
  25. 68
  26. 42
  27. 94
  28. 136
  29. 63
  30. 182
  31. 52
  32. 37
  33. 90
  34. 56
  35. 58
  36. 46
  37. 72
  38. 172
  39. 138
  40. 52

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