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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 262 · 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 87 =
  2. 2.Half of 92 =
  3. 3.Half of 76 =
  4. 4.Half of 168 =
  5. 5.Half of 42 =
  6. 6.Half of 192 =
  7. 7.Half of 172 =
  8. 8.Double 81 =
  9. 9.Double 71 =
  10. 10.Half of 84 =
  11. 11.Half of 126 =
  12. 12.Double 59 =
  13. 13.Half of 186 =
  14. 14.Double 35 =
  15. 15.Half of 12 =
  16. 16.Double 26 =
  17. 17.Double 76 =
  18. 18.Half of 16 =
  19. 19.Double 83 =
  20. 20.Double 24 =
  21. 21.Half of 166 =
  22. 22.Half of 54 =
  23. 23.Half of 122 =
  24. 24.Double 13 =
  25. 25.Half of 132 =
  26. 26.Double 78 =
  27. 27.Double 98 =
  28. 28.Double 29 =
  29. 29.Half of 32 =
  30. 30.Half of 46 =
  31. 31.Half of 22 =
  32. 32.Double 94 =
  33. 33.Double 96 =
  34. 34.Double 37 =
  35. 35.Half of 44 =
  36. 36.Half of 86 =
  37. 37.Double 74 =
  38. 38.Double 46 =
  39. 39.Double 64 =
  40. 40.Half of 38 =

Answer key

  1. 174
  2. 46
  3. 38
  4. 84
  5. 21
  6. 96
  7. 86
  8. 162
  9. 142
  10. 42
  11. 63
  12. 118
  13. 93
  14. 70
  15. 6
  16. 52
  17. 152
  18. 8
  19. 166
  20. 48
  21. 83
  22. 27
  23. 61
  24. 26
  25. 66
  26. 156
  27. 196
  28. 58
  29. 16
  30. 23
  31. 11
  32. 188
  33. 192
  34. 74
  35. 22
  36. 43
  37. 148
  38. 92
  39. 128
  40. 19

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