← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 920 · 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 16 =
  2. 2.Double 95 =
  3. 3.Double 21 =
  4. 4.Half of 114 =
  5. 5.Half of 134 =
  6. 6.Double 78 =
  7. 7.Half of 62 =
  8. 8.Double 25 =
  9. 9.Double 44 =
  10. 10.Double 28 =
  11. 11.Double 57 =
  12. 12.Double 31 =
  13. 13.Double 94 =
  14. 14.Double 75 =
  15. 15.Half of 18 =
  16. 16.Half of 92 =
  17. 17.Half of 22 =
  18. 18.Double 22 =
  19. 19.Half of 34 =
  20. 20.Double 81 =
  21. 21.Half of 132 =
  22. 22.Half of 144 =
  23. 23.Double 13 =
  24. 24.Half of 102 =
  25. 25.Double 34 =
  26. 26.Half of 42 =
  27. 27.Double 18 =
  28. 28.Half of 192 =
  29. 29.Double 14 =
  30. 30.Half of 52 =
  31. 31.Double 41 =
  32. 32.Double 68 =
  33. 33.Double 89 =
  34. 34.Half of 152 =
  35. 35.Double 93 =
  36. 36.Double 62 =
  37. 37.Double 49 =
  38. 38.Half of 188 =
  39. 39.Double 17 =
  40. 40.Half of 46 =

Answer key

  1. 32
  2. 190
  3. 42
  4. 57
  5. 67
  6. 156
  7. 31
  8. 50
  9. 88
  10. 56
  11. 114
  12. 62
  13. 188
  14. 150
  15. 9
  16. 46
  17. 11
  18. 44
  19. 17
  20. 162
  21. 66
  22. 72
  23. 26
  24. 51
  25. 68
  26. 21
  27. 36
  28. 96
  29. 28
  30. 26
  31. 82
  32. 136
  33. 178
  34. 76
  35. 186
  36. 124
  37. 98
  38. 94
  39. 34
  40. 23

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