← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 157 · 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 11 =
  2. 2.Double 81 =
  3. 3.Half of 184 =
  4. 4.Double 69 =
  5. 5.Double 79 =
  6. 6.Half of 142 =
  7. 7.Double 84 =
  8. 8.Half of 186 =
  9. 9.Double 12 =
  10. 10.Double 57 =
  11. 11.Half of 74 =
  12. 12.Half of 166 =
  13. 13.Double 39 =
  14. 14.Half of 72 =
  15. 15.Half of 134 =
  16. 16.Half of 154 =
  17. 17.Double 91 =
  18. 18.Double 18 =
  19. 19.Double 36 =
  20. 20.Double 73 =
  21. 21.Double 15 =
  22. 22.Double 66 =
  23. 23.Half of 152 =
  24. 24.Double 61 =
  25. 25.Half of 64 =
  26. 26.Double 74 =
  27. 27.Half of 48 =
  28. 28.Double 68 =
  29. 29.Double 95 =
  30. 30.Half of 172 =
  31. 31.Double 37 =
  32. 32.Double 99 =
  33. 33.Double 48 =
  34. 34.Double 87 =
  35. 35.Half of 94 =
  36. 36.Double 25 =
  37. 37.Double 35 =
  38. 38.Half of 14 =
  39. 39.Double 97 =
  40. 40.Half of 126 =

Answer key

  1. 22
  2. 162
  3. 92
  4. 138
  5. 158
  6. 71
  7. 168
  8. 93
  9. 24
  10. 114
  11. 37
  12. 83
  13. 78
  14. 36
  15. 67
  16. 77
  17. 182
  18. 36
  19. 72
  20. 146
  21. 30
  22. 132
  23. 76
  24. 122
  25. 32
  26. 148
  27. 24
  28. 136
  29. 190
  30. 86
  31. 74
  32. 198
  33. 96
  34. 174
  35. 47
  36. 50
  37. 70
  38. 7
  39. 194
  40. 63

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