← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 359 · 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 88 =
  2. 2.Double 42 =
  3. 3.Double 91 =
  4. 4.Double 54 =
  5. 5.Double 51 =
  6. 6.Double 77 =
  7. 7.Half of 122 =
  8. 8.Half of 114 =
  9. 9.Half of 112 =
  10. 10.Half of 106 =
  11. 11.Double 59 =
  12. 12.Half of 42 =
  13. 13.Half of 186 =
  14. 14.Half of 132 =
  15. 15.Double 26 =
  16. 16.Double 61 =
  17. 17.Double 64 =
  18. 18.Half of 18 =
  19. 19.Double 81 =
  20. 20.Double 23 =
  21. 21.Half of 128 =
  22. 22.Half of 24 =
  23. 23.Double 57 =
  24. 24.Half of 158 =
  25. 25.Double 55 =
  26. 26.Double 84 =
  27. 27.Double 24 =
  28. 28.Double 39 =
  29. 29.Double 14 =
  30. 30.Double 67 =
  31. 31.Double 48 =
  32. 32.Double 74 =
  33. 33.Half of 184 =
  34. 34.Double 21 =
  35. 35.Half of 102 =
  36. 36.Half of 142 =
  37. 37.Double 83 =
  38. 38.Double 56 =
  39. 39.Half of 58 =
  40. 40.Half of 116 =

Answer key

  1. 176
  2. 84
  3. 182
  4. 108
  5. 102
  6. 154
  7. 61
  8. 57
  9. 56
  10. 53
  11. 118
  12. 21
  13. 93
  14. 66
  15. 52
  16. 122
  17. 128
  18. 9
  19. 162
  20. 46
  21. 64
  22. 12
  23. 114
  24. 79
  25. 110
  26. 168
  27. 48
  28. 78
  29. 28
  30. 134
  31. 96
  32. 148
  33. 92
  34. 42
  35. 51
  36. 71
  37. 166
  38. 112
  39. 29
  40. 58

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