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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 75 · 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 92 =
  2. 2.Half of 198 =
  3. 3.Half of 172 =
  4. 4.Half of 166 =
  5. 5.Double 15 =
  6. 6.Half of 22 =
  7. 7.Half of 52 =
  8. 8.Double 51 =
  9. 9.Half of 42 =
  10. 10.Half of 112 =
  11. 11.Double 12 =
  12. 12.Half of 142 =
  13. 13.Half of 36 =
  14. 14.Half of 84 =
  15. 15.Half of 66 =
  16. 16.Half of 152 =
  17. 17.Double 46 =
  18. 18.Half of 122 =
  19. 19.Double 36 =
  20. 20.Half of 192 =
  21. 21.Double 26 =
  22. 22.Double 59 =
  23. 23.Double 73 =
  24. 24.Double 93 =
  25. 25.Double 62 =
  26. 26.Half of 74 =
  27. 27.Double 82 =
  28. 28.Double 74 =
  29. 29.Double 13 =
  30. 30.Double 43 =
  31. 31.Half of 156 =
  32. 32.Double 17 =
  33. 33.Half of 188 =
  34. 34.Double 39 =
  35. 35.Double 64 =
  36. 36.Double 41 =
  37. 37.Half of 34 =
  38. 38.Double 47 =
  39. 39.Half of 138 =
  40. 40.Half of 82 =

Answer key

  1. 46
  2. 99
  3. 86
  4. 83
  5. 30
  6. 11
  7. 26
  8. 102
  9. 21
  10. 56
  11. 24
  12. 71
  13. 18
  14. 42
  15. 33
  16. 76
  17. 92
  18. 61
  19. 72
  20. 96
  21. 52
  22. 118
  23. 146
  24. 186
  25. 124
  26. 37
  27. 164
  28. 148
  29. 26
  30. 86
  31. 78
  32. 34
  33. 94
  34. 78
  35. 128
  36. 82
  37. 17
  38. 94
  39. 69
  40. 41

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