← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 593 · 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 67 =
  2. 2.Double 13 =
  3. 3.Double 62 =
  4. 4.Double 28 =
  5. 5.Half of 92 =
  6. 6.Double 52 =
  7. 7.Double 51 =
  8. 8.Half of 38 =
  9. 9.Half of 104 =
  10. 10.Half of 72 =
  11. 11.Double 41 =
  12. 12.Half of 152 =
  13. 13.Double 42 =
  14. 14.Double 85 =
  15. 15.Half of 68 =
  16. 16.Double 14 =
  17. 17.Double 82 =
  18. 18.Double 11 =
  19. 19.Double 17 =
  20. 20.Double 39 =
  21. 21.Half of 142 =
  22. 22.Double 66 =
  23. 23.Double 71 =
  24. 24.Half of 116 =
  25. 25.Double 31 =
  26. 26.Double 27 =
  27. 27.Half of 102 =
  28. 28.Double 24 =
  29. 29.Double 81 =
  30. 30.Double 76 =
  31. 31.Half of 176 =
  32. 32.Half of 164 =
  33. 33.Double 35 =
  34. 34.Double 68 =
  35. 35.Double 44 =
  36. 36.Double 56 =
  37. 37.Double 37 =
  38. 38.Half of 24 =
  39. 39.Double 12 =
  40. 40.Half of 188 =

Answer key

  1. 134
  2. 26
  3. 124
  4. 56
  5. 46
  6. 104
  7. 102
  8. 19
  9. 52
  10. 36
  11. 82
  12. 76
  13. 84
  14. 170
  15. 34
  16. 28
  17. 164
  18. 22
  19. 34
  20. 78
  21. 71
  22. 132
  23. 142
  24. 58
  25. 62
  26. 54
  27. 51
  28. 48
  29. 162
  30. 152
  31. 88
  32. 82
  33. 70
  34. 136
  35. 88
  36. 112
  37. 74
  38. 12
  39. 24
  40. 94

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