← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 410 · 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 81 =
  2. 2.Half of 36 =
  3. 3.Double 19 =
  4. 4.Double 51 =
  5. 5.Half of 154 =
  6. 6.Half of 114 =
  7. 7.Half of 102 =
  8. 8.Double 21 =
  9. 9.Double 99 =
  10. 10.Double 97 =
  11. 11.Double 42 =
  12. 12.Double 36 =
  13. 13.Half of 74 =
  14. 14.Double 77 =
  15. 15.Double 58 =
  16. 16.Double 32 =
  17. 17.Half of 56 =
  18. 18.Half of 152 =
  19. 19.Double 18 =
  20. 20.Half of 126 =
  21. 21.Half of 106 =
  22. 22.Half of 128 =
  23. 23.Half of 166 =
  24. 24.Half of 198 =
  25. 25.Double 11 =
  26. 26.Half of 196 =
  27. 27.Half of 136 =
  28. 28.Double 87 =
  29. 29.Half of 192 =
  30. 30.Double 91 =
  31. 31.Double 62 =
  32. 32.Double 64 =
  33. 33.Double 73 =
  34. 34.Double 29 =
  35. 35.Half of 174 =
  36. 36.Half of 138 =
  37. 37.Double 54 =
  38. 38.Double 74 =
  39. 39.Double 26 =
  40. 40.Half of 52 =

Answer key

  1. 162
  2. 18
  3. 38
  4. 102
  5. 77
  6. 57
  7. 51
  8. 42
  9. 198
  10. 194
  11. 84
  12. 72
  13. 37
  14. 154
  15. 116
  16. 64
  17. 28
  18. 76
  19. 36
  20. 63
  21. 53
  22. 64
  23. 83
  24. 99
  25. 22
  26. 98
  27. 68
  28. 174
  29. 96
  30. 182
  31. 124
  32. 128
  33. 146
  34. 58
  35. 87
  36. 69
  37. 108
  38. 148
  39. 52
  40. 26

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