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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 444 · 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 114 =
  2. 2.Double 61 =
  3. 3.Half of 84 =
  4. 4.Half of 22 =
  5. 5.Half of 192 =
  6. 6.Double 37 =
  7. 7.Half of 72 =
  8. 8.Double 45 =
  9. 9.Double 81 =
  10. 10.Double 15 =
  11. 11.Double 93 =
  12. 12.Half of 32 =
  13. 13.Half of 152 =
  14. 14.Half of 106 =
  15. 15.Double 69 =
  16. 16.Half of 94 =
  17. 17.Half of 66 =
  18. 18.Double 86 =
  19. 19.Double 41 =
  20. 20.Double 23 =
  21. 21.Half of 62 =
  22. 22.Double 79 =
  23. 23.Half of 96 =
  24. 24.Double 53 =
  25. 25.Double 19 =
  26. 26.Half of 12 =
  27. 27.Half of 126 =
  28. 28.Half of 154 =
  29. 29.Half of 56 =
  30. 30.Half of 186 =
  31. 31.Double 34 =
  32. 32.Half of 44 =
  33. 33.Half of 128 =
  34. 34.Half of 42 =
  35. 35.Double 28 =
  36. 36.Double 25 =
  37. 37.Double 38 =
  38. 38.Double 36 =
  39. 39.Double 72 =
  40. 40.Half of 136 =

Answer key

  1. 57
  2. 122
  3. 42
  4. 11
  5. 96
  6. 74
  7. 36
  8. 90
  9. 162
  10. 30
  11. 186
  12. 16
  13. 76
  14. 53
  15. 138
  16. 47
  17. 33
  18. 172
  19. 82
  20. 46
  21. 31
  22. 158
  23. 48
  24. 106
  25. 38
  26. 6
  27. 63
  28. 77
  29. 28
  30. 93
  31. 68
  32. 22
  33. 64
  34. 21
  35. 56
  36. 50
  37. 76
  38. 72
  39. 144
  40. 68

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