← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 55 · 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 84 =
  2. 2.Half of 184 =
  3. 3.Double 41 =
  4. 4.Double 28 =
  5. 5.Half of 132 =
  6. 6.Double 13 =
  7. 7.Double 45 =
  8. 8.Double 21 =
  9. 9.Double 61 =
  10. 10.Double 39 =
  11. 11.Half of 166 =
  12. 12.Half of 136 =
  13. 13.Double 44 =
  14. 14.Double 35 =
  15. 15.Half of 34 =
  16. 16.Half of 56 =
  17. 17.Half of 72 =
  18. 18.Half of 84 =
  19. 19.Half of 134 =
  20. 20.Double 66 =
  21. 21.Double 62 =
  22. 22.Double 93 =
  23. 23.Half of 178 =
  24. 24.Half of 182 =
  25. 25.Double 99 =
  26. 26.Half of 162 =
  27. 27.Half of 168 =
  28. 28.Half of 22 =
  29. 29.Half of 52 =
  30. 30.Half of 42 =
  31. 31.Double 83 =
  32. 32.Half of 14 =
  33. 33.Double 32 =
  34. 34.Half of 152 =
  35. 35.Double 87 =
  36. 36.Double 33 =
  37. 37.Half of 106 =
  38. 38.Double 85 =
  39. 39.Double 18 =
  40. 40.Double 51 =

Answer key

  1. 168
  2. 92
  3. 82
  4. 56
  5. 66
  6. 26
  7. 90
  8. 42
  9. 122
  10. 78
  11. 83
  12. 68
  13. 88
  14. 70
  15. 17
  16. 28
  17. 36
  18. 42
  19. 67
  20. 132
  21. 124
  22. 186
  23. 89
  24. 91
  25. 198
  26. 81
  27. 84
  28. 11
  29. 26
  30. 21
  31. 166
  32. 7
  33. 64
  34. 76
  35. 174
  36. 66
  37. 53
  38. 170
  39. 36
  40. 102

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