← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 220 · 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 18 =
  2. 2.Half of 126 =
  3. 3.Double 39 =
  4. 4.Half of 118 =
  5. 5.Double 25 =
  6. 6.Double 23 =
  7. 7.Double 63 =
  8. 8.Double 11 =
  9. 9.Half of 76 =
  10. 10.Half of 198 =
  11. 11.Double 14 =
  12. 12.Double 26 =
  13. 13.Half of 102 =
  14. 14.Double 41 =
  15. 15.Double 32 =
  16. 16.Double 97 =
  17. 17.Double 27 =
  18. 18.Half of 48 =
  19. 19.Half of 188 =
  20. 20.Double 24 =
  21. 21.Half of 158 =
  22. 22.Half of 154 =
  23. 23.Half of 168 =
  24. 24.Half of 82 =
  25. 25.Half of 136 =
  26. 26.Half of 52 =
  27. 27.Half of 34 =
  28. 28.Half of 196 =
  29. 29.Half of 114 =
  30. 30.Half of 38 =
  31. 31.Double 51 =
  32. 32.Double 58 =
  33. 33.Half of 88 =
  34. 34.Half of 14 =
  35. 35.Half of 132 =
  36. 36.Half of 106 =
  37. 37.Double 95 =
  38. 38.Double 82 =
  39. 39.Double 34 =
  40. 40.Half of 64 =

Answer key

  1. 36
  2. 63
  3. 78
  4. 59
  5. 50
  6. 46
  7. 126
  8. 22
  9. 38
  10. 99
  11. 28
  12. 52
  13. 51
  14. 82
  15. 64
  16. 194
  17. 54
  18. 24
  19. 94
  20. 48
  21. 79
  22. 77
  23. 84
  24. 41
  25. 68
  26. 26
  27. 17
  28. 98
  29. 57
  30. 19
  31. 102
  32. 116
  33. 44
  34. 7
  35. 66
  36. 53
  37. 190
  38. 164
  39. 68
  40. 32

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