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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 485 · 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 94 =
  2. 2.Half of 128 =
  3. 3.Double 95 =
  4. 4.Half of 108 =
  5. 5.Half of 178 =
  6. 6.Half of 32 =
  7. 7.Half of 56 =
  8. 8.Double 32 =
  9. 9.Double 48 =
  10. 10.Half of 194 =
  11. 11.Half of 34 =
  12. 12.Double 65 =
  13. 13.Half of 62 =
  14. 14.Double 58 =
  15. 15.Half of 176 =
  16. 16.Double 51 =
  17. 17.Double 26 =
  18. 18.Double 27 =
  19. 19.Double 71 =
  20. 20.Double 68 =
  21. 21.Double 33 =
  22. 22.Double 91 =
  23. 23.Double 79 =
  24. 24.Double 17 =
  25. 25.Double 89 =
  26. 26.Double 53 =
  27. 27.Double 43 =
  28. 28.Double 88 =
  29. 29.Double 21 =
  30. 30.Double 13 =
  31. 31.Half of 82 =
  32. 32.Half of 186 =
  33. 33.Double 66 =
  34. 34.Half of 98 =
  35. 35.Half of 24 =
  36. 36.Double 41 =
  37. 37.Half of 96 =
  38. 38.Half of 68 =
  39. 39.Half of 146 =
  40. 40.Double 81 =

Answer key

  1. 188
  2. 64
  3. 190
  4. 54
  5. 89
  6. 16
  7. 28
  8. 64
  9. 96
  10. 97
  11. 17
  12. 130
  13. 31
  14. 116
  15. 88
  16. 102
  17. 52
  18. 54
  19. 142
  20. 136
  21. 66
  22. 182
  23. 158
  24. 34
  25. 178
  26. 106
  27. 86
  28. 176
  29. 42
  30. 26
  31. 41
  32. 93
  33. 132
  34. 49
  35. 12
  36. 82
  37. 48
  38. 34
  39. 73
  40. 162

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