← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 857 · 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 34 =
  2. 2.Half of 136 =
  3. 3.Double 55 =
  4. 4.Double 21 =
  5. 5.Double 32 =
  6. 6.Half of 14 =
  7. 7.Double 74 =
  8. 8.Half of 152 =
  9. 9.Double 65 =
  10. 10.Double 49 =
  11. 11.Double 66 =
  12. 12.Half of 162 =
  13. 13.Double 53 =
  14. 14.Half of 156 =
  15. 15.Double 87 =
  16. 16.Half of 192 =
  17. 17.Half of 32 =
  18. 18.Double 76 =
  19. 19.Double 37 =
  20. 20.Half of 102 =
  21. 21.Double 79 =
  22. 22.Half of 144 =
  23. 23.Double 22 =
  24. 24.Half of 84 =
  25. 25.Half of 196 =
  26. 26.Half of 158 =
  27. 27.Double 59 =
  28. 28.Double 81 =
  29. 29.Half of 74 =
  30. 30.Double 12 =
  31. 31.Double 28 =
  32. 32.Half of 22 =
  33. 33.Double 73 =
  34. 34.Half of 106 =
  35. 35.Half of 28 =
  36. 36.Double 89 =
  37. 37.Half of 186 =
  38. 38.Half of 184 =
  39. 39.Half of 134 =
  40. 40.Double 93 =

Answer key

  1. 68
  2. 68
  3. 110
  4. 42
  5. 64
  6. 7
  7. 148
  8. 76
  9. 130
  10. 98
  11. 132
  12. 81
  13. 106
  14. 78
  15. 174
  16. 96
  17. 16
  18. 152
  19. 74
  20. 51
  21. 158
  22. 72
  23. 44
  24. 42
  25. 98
  26. 79
  27. 118
  28. 162
  29. 37
  30. 24
  31. 56
  32. 11
  33. 146
  34. 53
  35. 14
  36. 178
  37. 93
  38. 92
  39. 67
  40. 186

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