← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 259 · 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 51 =
  2. 2.Double 44 =
  3. 3.Half of 46 =
  4. 4.Double 47 =
  5. 5.Double 61 =
  6. 6.Half of 138 =
  7. 7.Double 71 =
  8. 8.Half of 104 =
  9. 9.Double 84 =
  10. 10.Double 29 =
  11. 11.Double 54 =
  12. 12.Double 36 =
  13. 13.Half of 144 =
  14. 14.Double 81 =
  15. 15.Half of 184 =
  16. 16.Double 66 =
  17. 17.Double 27 =
  18. 18.Half of 142 =
  19. 19.Half of 62 =
  20. 20.Double 18 =
  21. 21.Half of 42 =
  22. 22.Double 96 =
  23. 23.Half of 56 =
  24. 24.Double 34 =
  25. 25.Half of 108 =
  26. 26.Half of 172 =
  27. 27.Half of 192 =
  28. 28.Double 55 =
  29. 29.Half of 156 =
  30. 30.Half of 164 =
  31. 31.Double 45 =
  32. 32.Half of 28 =
  33. 33.Half of 22 =
  34. 34.Half of 158 =
  35. 35.Half of 106 =
  36. 36.Half of 102 =
  37. 37.Half of 98 =
  38. 38.Double 13 =
  39. 39.Half of 14 =
  40. 40.Half of 86 =

Answer key

  1. 102
  2. 88
  3. 23
  4. 94
  5. 122
  6. 69
  7. 142
  8. 52
  9. 168
  10. 58
  11. 108
  12. 72
  13. 72
  14. 162
  15. 92
  16. 132
  17. 54
  18. 71
  19. 31
  20. 36
  21. 21
  22. 192
  23. 28
  24. 68
  25. 54
  26. 86
  27. 96
  28. 110
  29. 78
  30. 82
  31. 90
  32. 14
  33. 11
  34. 79
  35. 53
  36. 51
  37. 49
  38. 26
  39. 7
  40. 43

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