← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 525 · 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 35 =
  2. 2.Half of 128 =
  3. 3.Double 68 =
  4. 4.Double 21 =
  5. 5.Half of 162 =
  6. 6.Double 29 =
  7. 7.Double 44 =
  8. 8.Half of 92 =
  9. 9.Half of 138 =
  10. 10.Double 82 =
  11. 11.Double 31 =
  12. 12.Half of 172 =
  13. 13.Half of 42 =
  14. 14.Double 12 =
  15. 15.Double 26 =
  16. 16.Half of 24 =
  17. 17.Half of 38 =
  18. 18.Half of 142 =
  19. 19.Double 27 =
  20. 20.Double 85 =
  21. 21.Half of 68 =
  22. 22.Double 87 =
  23. 23.Double 49 =
  24. 24.Half of 56 =
  25. 25.Half of 114 =
  26. 26.Half of 102 =
  27. 27.Double 77 =
  28. 28.Double 55 =
  29. 29.Double 71 =
  30. 30.Half of 88 =
  31. 31.Half of 76 =
  32. 32.Double 13 =
  33. 33.Half of 32 =
  34. 34.Half of 12 =
  35. 35.Half of 198 =
  36. 36.Half of 44 =
  37. 37.Double 17 =
  38. 38.Half of 112 =
  39. 39.Half of 192 =
  40. 40.Half of 152 =

Answer key

  1. 70
  2. 64
  3. 136
  4. 42
  5. 81
  6. 58
  7. 88
  8. 46
  9. 69
  10. 164
  11. 62
  12. 86
  13. 21
  14. 24
  15. 52
  16. 12
  17. 19
  18. 71
  19. 54
  20. 170
  21. 34
  22. 174
  23. 98
  24. 28
  25. 57
  26. 51
  27. 154
  28. 110
  29. 142
  30. 44
  31. 38
  32. 26
  33. 16
  34. 6
  35. 99
  36. 22
  37. 34
  38. 56
  39. 96
  40. 76

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