← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 690 · 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 17 =
  2. 2.Double 91 =
  3. 3.Half of 132 =
  4. 4.Double 81 =
  5. 5.Double 31 =
  6. 6.Double 67 =
  7. 7.Double 39 =
  8. 8.Half of 172 =
  9. 9.Double 42 =
  10. 10.Half of 154 =
  11. 11.Double 11 =
  12. 12.Half of 12 =
  13. 13.Double 48 =
  14. 14.Half of 88 =
  15. 15.Double 97 =
  16. 16.Double 13 =
  17. 17.Double 79 =
  18. 18.Half of 182 =
  19. 19.Half of 92 =
  20. 20.Half of 186 =
  21. 21.Half of 98 =
  22. 22.Half of 162 =
  23. 23.Half of 82 =
  24. 24.Double 64 =
  25. 25.Half of 52 =
  26. 26.Double 51 =
  27. 27.Half of 142 =
  28. 28.Half of 42 =
  29. 29.Double 75 =
  30. 30.Double 68 =
  31. 31.Double 37 =
  32. 32.Double 69 =
  33. 33.Half of 78 =
  34. 34.Half of 112 =
  35. 35.Double 62 =
  36. 36.Half of 66 =
  37. 37.Double 88 =
  38. 38.Half of 44 =
  39. 39.Double 47 =
  40. 40.Half of 156 =

Answer key

  1. 34
  2. 182
  3. 66
  4. 162
  5. 62
  6. 134
  7. 78
  8. 86
  9. 84
  10. 77
  11. 22
  12. 6
  13. 96
  14. 44
  15. 194
  16. 26
  17. 158
  18. 91
  19. 46
  20. 93
  21. 49
  22. 81
  23. 41
  24. 128
  25. 26
  26. 102
  27. 71
  28. 21
  29. 150
  30. 136
  31. 74
  32. 138
  33. 39
  34. 56
  35. 124
  36. 33
  37. 176
  38. 22
  39. 94
  40. 78

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