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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 542 · 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 36 =
  2. 2.Half of 144 =
  3. 3.Double 79 =
  4. 4.Double 24 =
  5. 5.Half of 176 =
  6. 6.Double 84 =
  7. 7.Half of 162 =
  8. 8.Half of 58 =
  9. 9.Half of 134 =
  10. 10.Double 25 =
  11. 11.Half of 46 =
  12. 12.Half of 12 =
  13. 13.Half of 34 =
  14. 14.Half of 106 =
  15. 15.Half of 84 =
  16. 16.Double 95 =
  17. 17.Half of 122 =
  18. 18.Half of 62 =
  19. 19.Half of 168 =
  20. 20.Half of 116 =
  21. 21.Double 91 =
  22. 22.Half of 92 =
  23. 23.Double 96 =
  24. 24.Double 35 =
  25. 25.Half of 114 =
  26. 26.Half of 192 =
  27. 27.Double 12 =
  28. 28.Double 94 =
  29. 29.Half of 54 =
  30. 30.Double 44 =
  31. 31.Double 98 =
  32. 32.Double 47 =
  33. 33.Half of 44 =
  34. 34.Double 64 =
  35. 35.Half of 52 =
  36. 36.Half of 164 =
  37. 37.Half of 74 =
  38. 38.Half of 28 =
  39. 39.Half of 72 =
  40. 40.Half of 196 =

Answer key

  1. 72
  2. 72
  3. 158
  4. 48
  5. 88
  6. 168
  7. 81
  8. 29
  9. 67
  10. 50
  11. 23
  12. 6
  13. 17
  14. 53
  15. 42
  16. 190
  17. 61
  18. 31
  19. 84
  20. 58
  21. 182
  22. 46
  23. 192
  24. 70
  25. 57
  26. 96
  27. 24
  28. 188
  29. 27
  30. 88
  31. 196
  32. 94
  33. 22
  34. 128
  35. 26
  36. 82
  37. 37
  38. 14
  39. 36
  40. 98

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