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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 388 · 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 196 =
  2. 2.Half of 158 =
  3. 3.Half of 36 =
  4. 4.Half of 32 =
  5. 5.Half of 188 =
  6. 6.Double 16 =
  7. 7.Half of 42 =
  8. 8.Half of 168 =
  9. 9.Half of 126 =
  10. 10.Double 18 =
  11. 11.Double 35 =
  12. 12.Double 21 =
  13. 13.Half of 56 =
  14. 14.Double 76 =
  15. 15.Double 31 =
  16. 16.Half of 162 =
  17. 17.Double 46 =
  18. 18.Half of 144 =
  19. 19.Double 32 =
  20. 20.Double 66 =
  21. 21.Double 91 =
  22. 22.Double 67 =
  23. 23.Double 44 =
  24. 24.Double 12 =
  25. 25.Double 33 =
  26. 26.Double 59 =
  27. 27.Double 11 =
  28. 28.Half of 24 =
  29. 29.Half of 18 =
  30. 30.Double 64 =
  31. 31.Half of 52 =
  32. 32.Half of 72 =
  33. 33.Half of 192 =
  34. 34.Half of 116 =
  35. 35.Double 61 =
  36. 36.Half of 62 =
  37. 37.Double 55 =
  38. 38.Half of 178 =
  39. 39.Half of 92 =
  40. 40.Double 92 =

Answer key

  1. 98
  2. 79
  3. 18
  4. 16
  5. 94
  6. 32
  7. 21
  8. 84
  9. 63
  10. 36
  11. 70
  12. 42
  13. 28
  14. 152
  15. 62
  16. 81
  17. 92
  18. 72
  19. 64
  20. 132
  21. 182
  22. 134
  23. 88
  24. 24
  25. 66
  26. 118
  27. 22
  28. 12
  29. 9
  30. 128
  31. 26
  32. 36
  33. 96
  34. 58
  35. 122
  36. 31
  37. 110
  38. 89
  39. 46
  40. 184

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