← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 137 · 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 194 =
  2. 2.Double 55 =
  3. 3.Double 64 =
  4. 4.Double 92 =
  5. 5.Double 58 =
  6. 6.Double 52 =
  7. 7.Half of 122 =
  8. 8.Half of 42 =
  9. 9.Double 78 =
  10. 10.Half of 24 =
  11. 11.Double 71 =
  12. 12.Double 41 =
  13. 13.Double 31 =
  14. 14.Double 16 =
  15. 15.Double 22 =
  16. 16.Double 17 =
  17. 17.Double 62 =
  18. 18.Half of 16 =
  19. 19.Half of 82 =
  20. 20.Double 88 =
  21. 21.Half of 64 =
  22. 22.Half of 36 =
  23. 23.Half of 152 =
  24. 24.Double 11 =
  25. 25.Half of 186 =
  26. 26.Double 46 =
  27. 27.Double 91 =
  28. 28.Double 13 =
  29. 29.Double 26 =
  30. 30.Half of 52 =
  31. 31.Double 81 =
  32. 32.Double 51 =
  33. 33.Double 12 =
  34. 34.Half of 32 =
  35. 35.Half of 126 =
  36. 36.Half of 34 =
  37. 37.Half of 22 =
  38. 38.Half of 78 =
  39. 39.Double 47 =
  40. 40.Double 19 =

Answer key

  1. 97
  2. 110
  3. 128
  4. 184
  5. 116
  6. 104
  7. 61
  8. 21
  9. 156
  10. 12
  11. 142
  12. 82
  13. 62
  14. 32
  15. 44
  16. 34
  17. 124
  18. 8
  19. 41
  20. 176
  21. 32
  22. 18
  23. 76
  24. 22
  25. 93
  26. 92
  27. 182
  28. 26
  29. 52
  30. 26
  31. 162
  32. 102
  33. 24
  34. 16
  35. 63
  36. 17
  37. 11
  38. 39
  39. 94
  40. 38

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks