← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 85 · 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 38 =
  2. 2.Double 35 =
  3. 3.Double 21 =
  4. 4.Double 51 =
  5. 5.Double 17 =
  6. 6.Half of 16 =
  7. 7.Half of 192 =
  8. 8.Double 71 =
  9. 9.Half of 92 =
  10. 10.Half of 172 =
  11. 11.Double 42 =
  12. 12.Double 94 =
  13. 13.Double 92 =
  14. 14.Double 69 =
  15. 15.Half of 36 =
  16. 16.Double 25 =
  17. 17.Half of 58 =
  18. 18.Double 84 =
  19. 19.Half of 166 =
  20. 20.Half of 148 =
  21. 21.Double 52 =
  22. 22.Double 81 =
  23. 23.Double 22 =
  24. 24.Half of 64 =
  25. 25.Double 54 =
  26. 26.Double 16 =
  27. 27.Half of 156 =
  28. 28.Half of 126 =
  29. 29.Double 48 =
  30. 30.Double 12 =
  31. 31.Half of 22 =
  32. 32.Double 68 =
  33. 33.Double 44 =
  34. 34.Double 99 =
  35. 35.Double 72 =
  36. 36.Double 79 =
  37. 37.Double 18 =
  38. 38.Half of 96 =
  39. 39.Double 58 =
  40. 40.Half of 28 =

Answer key

  1. 76
  2. 70
  3. 42
  4. 102
  5. 34
  6. 8
  7. 96
  8. 142
  9. 46
  10. 86
  11. 84
  12. 188
  13. 184
  14. 138
  15. 18
  16. 50
  17. 29
  18. 168
  19. 83
  20. 74
  21. 104
  22. 162
  23. 44
  24. 32
  25. 108
  26. 32
  27. 78
  28. 63
  29. 96
  30. 24
  31. 11
  32. 136
  33. 88
  34. 198
  35. 144
  36. 158
  37. 36
  38. 48
  39. 116
  40. 14

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