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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 652 · 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 55 =
  2. 2.Double 56 =
  3. 3.Half of 62 =
  4. 4.Half of 172 =
  5. 5.Double 81 =
  6. 6.Double 98 =
  7. 7.Half of 108 =
  8. 8.Half of 66 =
  9. 9.Half of 168 =
  10. 10.Double 43 =
  11. 11.Double 11 =
  12. 12.Half of 86 =
  13. 13.Double 54 =
  14. 14.Double 32 =
  15. 15.Double 58 =
  16. 16.Double 23 =
  17. 17.Double 96 =
  18. 18.Half of 36 =
  19. 19.Half of 42 =
  20. 20.Double 76 =
  21. 21.Half of 122 =
  22. 22.Double 87 =
  23. 23.Half of 182 =
  24. 24.Double 22 =
  25. 25.Half of 48 =
  26. 26.Double 74 =
  27. 27.Half of 132 =
  28. 28.Double 15 =
  29. 29.Half of 188 =
  30. 30.Half of 126 =
  31. 31.Half of 136 =
  32. 32.Double 97 =
  33. 33.Double 41 =
  34. 34.Half of 102 =
  35. 35.Half of 58 =
  36. 36.Double 44 =
  37. 37.Half of 26 =
  38. 38.Double 31 =
  39. 39.Half of 144 =
  40. 40.Double 95 =

Answer key

  1. 110
  2. 112
  3. 31
  4. 86
  5. 162
  6. 196
  7. 54
  8. 33
  9. 84
  10. 86
  11. 22
  12. 43
  13. 108
  14. 64
  15. 116
  16. 46
  17. 192
  18. 18
  19. 21
  20. 152
  21. 61
  22. 174
  23. 91
  24. 44
  25. 24
  26. 148
  27. 66
  28. 30
  29. 94
  30. 63
  31. 68
  32. 194
  33. 82
  34. 51
  35. 29
  36. 88
  37. 13
  38. 62
  39. 72
  40. 190

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