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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 12 · 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 196 =
  2. 2.Double 88 =
  3. 3.Half of 46 =
  4. 4.Double 25 =
  5. 5.Double 91 =
  6. 6.Half of 22 =
  7. 7.Half of 172 =
  8. 8.Half of 82 =
  9. 9.Half of 174 =
  10. 10.Double 83 =
  11. 11.Double 95 =
  12. 12.Double 24 =
  13. 13.Double 23 =
  14. 14.Double 71 =
  15. 15.Half of 52 =
  16. 16.Half of 122 =
  17. 17.Half of 36 =
  18. 18.Double 79 =
  19. 19.Half of 124 =
  20. 20.Half of 16 =
  21. 21.Half of 146 =
  22. 22.Double 82 =
  23. 23.Half of 108 =
  24. 24.Double 41 =
  25. 25.Double 12 =
  26. 26.Half of 184 =
  27. 27.Double 13 =
  28. 28.Half of 138 =
  29. 29.Half of 88 =
  30. 30.Double 34 =
  31. 31.Double 18 =
  32. 32.Double 43 =
  33. 33.Double 65 =
  34. 34.Half of 154 =
  35. 35.Double 56 =
  36. 36.Double 98 =
  37. 37.Half of 182 =
  38. 38.Half of 12 =
  39. 39.Double 19 =
  40. 40.Double 53 =

Answer key

  1. 98
  2. 176
  3. 23
  4. 50
  5. 182
  6. 11
  7. 86
  8. 41
  9. 87
  10. 166
  11. 190
  12. 48
  13. 46
  14. 142
  15. 26
  16. 61
  17. 18
  18. 158
  19. 62
  20. 8
  21. 73
  22. 164
  23. 54
  24. 82
  25. 24
  26. 92
  27. 26
  28. 69
  29. 44
  30. 68
  31. 36
  32. 86
  33. 130
  34. 77
  35. 112
  36. 196
  37. 91
  38. 6
  39. 38
  40. 106

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