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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 508 · 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 44 =
  2. 2.Double 69 =
  3. 3.Double 31 =
  4. 4.Half of 176 =
  5. 5.Double 81 =
  6. 6.Half of 44 =
  7. 7.Double 95 =
  8. 8.Double 48 =
  9. 9.Half of 94 =
  10. 10.Half of 24 =
  11. 11.Half of 142 =
  12. 12.Double 38 =
  13. 13.Double 29 =
  14. 14.Double 65 =
  15. 15.Double 11 =
  16. 16.Double 51 =
  17. 17.Double 58 =
  18. 18.Double 89 =
  19. 19.Double 61 =
  20. 20.Half of 84 =
  21. 21.Half of 192 =
  22. 22.Double 79 =
  23. 23.Half of 152 =
  24. 24.Half of 126 =
  25. 25.Double 87 =
  26. 26.Half of 78 =
  27. 27.Half of 54 =
  28. 28.Double 75 =
  29. 29.Half of 148 =
  30. 30.Half of 38 =
  31. 31.Half of 168 =
  32. 32.Double 99 =
  33. 33.Half of 92 =
  34. 34.Half of 26 =
  35. 35.Half of 62 =
  36. 36.Half of 32 =
  37. 37.Half of 144 =
  38. 38.Double 68 =
  39. 39.Double 33 =
  40. 40.Double 54 =

Answer key

  1. 88
  2. 138
  3. 62
  4. 88
  5. 162
  6. 22
  7. 190
  8. 96
  9. 47
  10. 12
  11. 71
  12. 76
  13. 58
  14. 130
  15. 22
  16. 102
  17. 116
  18. 178
  19. 122
  20. 42
  21. 96
  22. 158
  23. 76
  24. 63
  25. 174
  26. 39
  27. 27
  28. 150
  29. 74
  30. 19
  31. 84
  32. 198
  33. 46
  34. 13
  35. 31
  36. 16
  37. 72
  38. 136
  39. 66
  40. 108

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