← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 581 · 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 14 =
  2. 2.Half of 174 =
  3. 3.Double 26 =
  4. 4.Half of 76 =
  5. 5.Double 72 =
  6. 6.Half of 56 =
  7. 7.Double 21 =
  8. 8.Double 62 =
  9. 9.Double 74 =
  10. 10.Half of 144 =
  11. 11.Double 29 =
  12. 12.Double 45 =
  13. 13.Half of 172 =
  14. 14.Double 85 =
  15. 15.Double 71 =
  16. 16.Double 47 =
  17. 17.Double 57 =
  18. 18.Half of 84 =
  19. 19.Half of 46 =
  20. 20.Half of 198 =
  21. 21.Double 92 =
  22. 22.Double 27 =
  23. 23.Half of 136 =
  24. 24.Half of 66 =
  25. 25.Half of 12 =
  26. 26.Double 17 =
  27. 27.Half of 18 =
  28. 28.Half of 156 =
  29. 29.Half of 114 =
  30. 30.Half of 124 =
  31. 31.Half of 108 =
  32. 32.Half of 54 =
  33. 33.Double 52 =
  34. 34.Double 94 =
  35. 35.Half of 112 =
  36. 36.Half of 72 =
  37. 37.Half of 78 =
  38. 38.Half of 22 =
  39. 39.Half of 132 =
  40. 40.Half of 52 =

Answer key

  1. 28
  2. 87
  3. 52
  4. 38
  5. 144
  6. 28
  7. 42
  8. 124
  9. 148
  10. 72
  11. 58
  12. 90
  13. 86
  14. 170
  15. 142
  16. 94
  17. 114
  18. 42
  19. 23
  20. 99
  21. 184
  22. 54
  23. 68
  24. 33
  25. 6
  26. 34
  27. 9
  28. 78
  29. 57
  30. 62
  31. 54
  32. 27
  33. 104
  34. 188
  35. 56
  36. 36
  37. 39
  38. 11
  39. 66
  40. 26

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