← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 175 · 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 61 =
  2. 2.Half of 132 =
  3. 3.Double 28 =
  4. 4.Half of 158 =
  5. 5.Half of 118 =
  6. 6.Half of 62 =
  7. 7.Half of 136 =
  8. 8.Double 79 =
  9. 9.Double 37 =
  10. 10.Half of 196 =
  11. 11.Half of 124 =
  12. 12.Half of 144 =
  13. 13.Double 39 =
  14. 14.Half of 12 =
  15. 15.Double 46 =
  16. 16.Half of 142 =
  17. 17.Double 26 =
  18. 18.Double 22 =
  19. 19.Double 51 =
  20. 20.Double 91 =
  21. 21.Double 68 =
  22. 22.Half of 152 =
  23. 23.Double 77 =
  24. 24.Double 87 =
  25. 25.Half of 162 =
  26. 26.Double 34 =
  27. 27.Double 71 =
  28. 28.Double 11 =
  29. 29.Double 81 =
  30. 30.Half of 36 =
  31. 31.Half of 94 =
  32. 32.Half of 88 =
  33. 33.Half of 24 =
  34. 34.Half of 104 =
  35. 35.Half of 176 =
  36. 36.Double 69 =
  37. 37.Double 21 =
  38. 38.Double 14 =
  39. 39.Double 75 =
  40. 40.Double 33 =

Answer key

  1. 122
  2. 66
  3. 56
  4. 79
  5. 59
  6. 31
  7. 68
  8. 158
  9. 74
  10. 98
  11. 62
  12. 72
  13. 78
  14. 6
  15. 92
  16. 71
  17. 52
  18. 44
  19. 102
  20. 182
  21. 136
  22. 76
  23. 154
  24. 174
  25. 81
  26. 68
  27. 142
  28. 22
  29. 162
  30. 18
  31. 47
  32. 44
  33. 12
  34. 52
  35. 88
  36. 138
  37. 42
  38. 28
  39. 150
  40. 66

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