← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 551 · 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 15 =
  2. 2.Half of 132 =
  3. 3.Double 11 =
  4. 4.Double 37 =
  5. 5.Half of 32 =
  6. 6.Double 26 =
  7. 7.Double 55 =
  8. 8.Double 79 =
  9. 9.Half of 18 =
  10. 10.Double 36 =
  11. 11.Half of 184 =
  12. 12.Double 56 =
  13. 13.Double 75 =
  14. 14.Double 92 =
  15. 15.Half of 56 =
  16. 16.Half of 54 =
  17. 17.Double 32 =
  18. 18.Half of 124 =
  19. 19.Half of 142 =
  20. 20.Half of 164 =
  21. 21.Half of 42 =
  22. 22.Half of 64 =
  23. 23.Half of 192 =
  24. 24.Half of 116 =
  25. 25.Half of 114 =
  26. 26.Double 64 =
  27. 27.Double 43 =
  28. 28.Half of 168 =
  29. 29.Double 85 =
  30. 30.Double 57 =
  31. 31.Half of 128 =
  32. 32.Half of 154 =
  33. 33.Half of 198 =
  34. 34.Double 53 =
  35. 35.Double 31 =
  36. 36.Double 84 =
  37. 37.Half of 158 =
  38. 38.Half of 62 =
  39. 39.Double 71 =
  40. 40.Half of 12 =

Answer key

  1. 30
  2. 66
  3. 22
  4. 74
  5. 16
  6. 52
  7. 110
  8. 158
  9. 9
  10. 72
  11. 92
  12. 112
  13. 150
  14. 184
  15. 28
  16. 27
  17. 64
  18. 62
  19. 71
  20. 82
  21. 21
  22. 32
  23. 96
  24. 58
  25. 57
  26. 128
  27. 86
  28. 84
  29. 170
  30. 114
  31. 64
  32. 77
  33. 99
  34. 106
  35. 62
  36. 168
  37. 79
  38. 31
  39. 142
  40. 6

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