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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 180 · 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 25 =
  2. 2.Half of 38 =
  3. 3.Half of 188 =
  4. 4.Double 11 =
  5. 5.Double 95 =
  6. 6.Half of 148 =
  7. 7.Half of 12 =
  8. 8.Double 68 =
  9. 9.Double 35 =
  10. 10.Double 21 =
  11. 11.Double 16 =
  12. 12.Double 18 =
  13. 13.Double 94 =
  14. 14.Double 69 =
  15. 15.Double 91 =
  16. 16.Half of 58 =
  17. 17.Half of 166 =
  18. 18.Half of 146 =
  19. 19.Double 96 =
  20. 20.Double 36 =
  21. 21.Double 15 =
  22. 22.Half of 172 =
  23. 23.Half of 112 =
  24. 24.Half of 108 =
  25. 25.Half of 26 =
  26. 26.Double 82 =
  27. 27.Double 97 =
  28. 28.Half of 48 =
  29. 29.Half of 162 =
  30. 30.Half of 124 =
  31. 31.Half of 14 =
  32. 32.Double 39 =
  33. 33.Half of 182 =
  34. 34.Half of 92 =
  35. 35.Double 67 =
  36. 36.Half of 152 =
  37. 37.Double 33 =
  38. 38.Double 52 =
  39. 39.Double 34 =
  40. 40.Double 53 =

Answer key

  1. 50
  2. 19
  3. 94
  4. 22
  5. 190
  6. 74
  7. 6
  8. 136
  9. 70
  10. 42
  11. 32
  12. 36
  13. 188
  14. 138
  15. 182
  16. 29
  17. 83
  18. 73
  19. 192
  20. 72
  21. 30
  22. 86
  23. 56
  24. 54
  25. 13
  26. 164
  27. 194
  28. 24
  29. 81
  30. 62
  31. 7
  32. 78
  33. 91
  34. 46
  35. 134
  36. 76
  37. 66
  38. 104
  39. 68
  40. 106

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