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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 565 · 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 88 =
  2. 2.Half of 132 =
  3. 3.Half of 76 =
  4. 4.Double 68 =
  5. 5.Half of 12 =
  6. 6.Double 58 =
  7. 7.Double 18 =
  8. 8.Double 52 =
  9. 9.Half of 188 =
  10. 10.Double 23 =
  11. 11.Double 93 =
  12. 12.Double 75 =
  13. 13.Double 11 =
  14. 14.Double 35 =
  15. 15.Half of 184 =
  16. 16.Double 99 =
  17. 17.Half of 52 =
  18. 18.Double 41 =
  19. 19.Half of 114 =
  20. 20.Double 83 =
  21. 21.Double 32 =
  22. 22.Double 85 =
  23. 23.Half of 24 =
  24. 24.Half of 26 =
  25. 25.Half of 164 =
  26. 26.Double 26 =
  27. 27.Double 31 =
  28. 28.Double 51 =
  29. 29.Double 53 =
  30. 30.Half of 46 =
  31. 31.Half of 162 =
  32. 32.Double 79 =
  33. 33.Double 72 =
  34. 34.Half of 192 =
  35. 35.Double 25 =
  36. 36.Double 63 =
  37. 37.Double 81 =
  38. 38.Double 65 =
  39. 39.Double 71 =
  40. 40.Double 46 =

Answer key

  1. 176
  2. 66
  3. 38
  4. 136
  5. 6
  6. 116
  7. 36
  8. 104
  9. 94
  10. 46
  11. 186
  12. 150
  13. 22
  14. 70
  15. 92
  16. 198
  17. 26
  18. 82
  19. 57
  20. 166
  21. 64
  22. 170
  23. 12
  24. 13
  25. 82
  26. 52
  27. 62
  28. 102
  29. 106
  30. 23
  31. 81
  32. 158
  33. 144
  34. 96
  35. 50
  36. 126
  37. 162
  38. 130
  39. 142
  40. 92

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