← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 749 · 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 41 =
  2. 2.Double 69 =
  3. 3.Double 42 =
  4. 4.Double 46 =
  5. 5.Half of 58 =
  6. 6.Double 49 =
  7. 7.Half of 78 =
  8. 8.Half of 62 =
  9. 9.Half of 132 =
  10. 10.Half of 182 =
  11. 11.Half of 54 =
  12. 12.Half of 174 =
  13. 13.Half of 102 =
  14. 14.Double 34 =
  15. 15.Double 32 =
  16. 16.Double 64 =
  17. 17.Double 96 =
  18. 18.Half of 94 =
  19. 19.Half of 18 =
  20. 20.Half of 178 =
  21. 21.Double 81 =
  22. 22.Half of 186 =
  23. 23.Double 33 =
  24. 24.Double 94 =
  25. 25.Half of 42 =
  26. 26.Double 35 =
  27. 27.Double 73 =
  28. 28.Double 65 =
  29. 29.Double 98 =
  30. 30.Double 82 =
  31. 31.Half of 14 =
  32. 32.Double 28 =
  33. 33.Double 44 =
  34. 34.Double 37 =
  35. 35.Half of 108 =
  36. 36.Half of 164 =
  37. 37.Half of 26 =
  38. 38.Half of 72 =
  39. 39.Double 15 =
  40. 40.Double 61 =

Answer key

  1. 82
  2. 138
  3. 84
  4. 92
  5. 29
  6. 98
  7. 39
  8. 31
  9. 66
  10. 91
  11. 27
  12. 87
  13. 51
  14. 68
  15. 64
  16. 128
  17. 192
  18. 47
  19. 9
  20. 89
  21. 162
  22. 93
  23. 66
  24. 188
  25. 21
  26. 70
  27. 146
  28. 130
  29. 196
  30. 164
  31. 7
  32. 56
  33. 88
  34. 74
  35. 54
  36. 82
  37. 13
  38. 36
  39. 30
  40. 122

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