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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 566 · 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 65 =
  2. 2.Double 96 =
  3. 3.Half of 14 =
  4. 4.Double 99 =
  5. 5.Half of 162 =
  6. 6.Half of 172 =
  7. 7.Half of 156 =
  8. 8.Double 49 =
  9. 9.Double 67 =
  10. 10.Half of 22 =
  11. 11.Double 88 =
  12. 12.Double 91 =
  13. 13.Half of 54 =
  14. 14.Half of 148 =
  15. 15.Double 41 =
  16. 16.Half of 102 =
  17. 17.Double 11 =
  18. 18.Double 19 =
  19. 19.Double 21 =
  20. 20.Half of 82 =
  21. 21.Half of 194 =
  22. 22.Half of 58 =
  23. 23.Double 34 =
  24. 24.Half of 124 =
  25. 25.Half of 192 =
  26. 26.Half of 88 =
  27. 27.Half of 144 =
  28. 28.Half of 76 =
  29. 29.Double 81 =
  30. 30.Double 48 =
  31. 31.Double 92 =
  32. 32.Half of 152 =
  33. 33.Double 27 =
  34. 34.Half of 28 =
  35. 35.Half of 112 =
  36. 36.Double 28 =
  37. 37.Half of 94 =
  38. 38.Double 62 =
  39. 39.Double 64 =
  40. 40.Half of 132 =

Answer key

  1. 130
  2. 192
  3. 7
  4. 198
  5. 81
  6. 86
  7. 78
  8. 98
  9. 134
  10. 11
  11. 176
  12. 182
  13. 27
  14. 74
  15. 82
  16. 51
  17. 22
  18. 38
  19. 42
  20. 41
  21. 97
  22. 29
  23. 68
  24. 62
  25. 96
  26. 44
  27. 72
  28. 38
  29. 162
  30. 96
  31. 184
  32. 76
  33. 54
  34. 14
  35. 56
  36. 56
  37. 47
  38. 124
  39. 128
  40. 66

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