← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 704 · 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.Half of 132 =
  2. 2.Half of 54 =
  3. 3.Double 61 =
  4. 4.Double 81 =
  5. 5.Double 62 =
  6. 6.Half of 42 =
  7. 7.Double 71 =
  8. 8.Half of 84 =
  9. 9.Half of 146 =
  10. 10.Half of 172 =
  11. 11.Half of 144 =
  12. 12.Double 12 =
  13. 13.Double 72 =
  14. 14.Double 98 =
  15. 15.Double 49 =
  16. 16.Double 85 =
  17. 17.Double 79 =
  18. 18.Double 63 =
  19. 19.Half of 22 =
  20. 20.Half of 136 =
  21. 21.Double 42 =
  22. 22.Half of 34 =
  23. 23.Double 88 =
  24. 24.Double 91 =
  25. 25.Half of 62 =
  26. 26.Double 31 =
  27. 27.Half of 162 =
  28. 28.Double 21 =
  29. 29.Double 57 =
  30. 30.Double 25 =
  31. 31.Half of 92 =
  32. 32.Half of 78 =
  33. 33.Double 28 =
  34. 34.Double 14 =
  35. 35.Double 18 =
  36. 36.Half of 174 =
  37. 37.Double 37 =
  38. 38.Half of 88 =
  39. 39.Half of 48 =
  40. 40.Double 66 =

Answer key

  1. 66
  2. 27
  3. 122
  4. 162
  5. 124
  6. 21
  7. 142
  8. 42
  9. 73
  10. 86
  11. 72
  12. 24
  13. 144
  14. 196
  15. 98
  16. 170
  17. 158
  18. 126
  19. 11
  20. 68
  21. 84
  22. 17
  23. 176
  24. 182
  25. 31
  26. 62
  27. 81
  28. 42
  29. 114
  30. 50
  31. 46
  32. 39
  33. 56
  34. 28
  35. 36
  36. 87
  37. 74
  38. 44
  39. 24
  40. 132

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