← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 782 · 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 14 =
  2. 2.Double 15 =
  3. 3.Half of 192 =
  4. 4.Double 41 =
  5. 5.Double 68 =
  6. 6.Double 39 =
  7. 7.Double 46 =
  8. 8.Double 82 =
  9. 9.Half of 58 =
  10. 10.Half of 34 =
  11. 11.Double 64 =
  12. 12.Double 31 =
  13. 13.Half of 18 =
  14. 14.Half of 26 =
  15. 15.Half of 22 =
  16. 16.Half of 52 =
  17. 17.Double 21 =
  18. 18.Double 67 =
  19. 19.Double 84 =
  20. 20.Double 62 =
  21. 21.Double 51 =
  22. 22.Half of 62 =
  23. 23.Double 16 =
  24. 24.Double 37 =
  25. 25.Half of 142 =
  26. 26.Half of 164 =
  27. 27.Half of 132 =
  28. 28.Double 93 =
  29. 29.Double 97 =
  30. 30.Double 96 =
  31. 31.Half of 126 =
  32. 32.Double 95 =
  33. 33.Double 19 =
  34. 34.Half of 44 =
  35. 35.Double 55 =
  36. 36.Double 49 =
  37. 37.Double 33 =
  38. 38.Double 71 =
  39. 39.Double 12 =
  40. 40.Double 22 =

Answer key

  1. 7
  2. 30
  3. 96
  4. 82
  5. 136
  6. 78
  7. 92
  8. 164
  9. 29
  10. 17
  11. 128
  12. 62
  13. 9
  14. 13
  15. 11
  16. 26
  17. 42
  18. 134
  19. 168
  20. 124
  21. 102
  22. 31
  23. 32
  24. 74
  25. 71
  26. 82
  27. 66
  28. 186
  29. 194
  30. 192
  31. 63
  32. 190
  33. 38
  34. 22
  35. 110
  36. 98
  37. 66
  38. 142
  39. 24
  40. 44

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