← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 498 · 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 31 =
  2. 2.Double 99 =
  3. 3.Double 52 =
  4. 4.Double 67 =
  5. 5.Double 68 =
  6. 6.Double 21 =
  7. 7.Half of 18 =
  8. 8.Half of 42 =
  9. 9.Half of 88 =
  10. 10.Double 23 =
  11. 11.Half of 178 =
  12. 12.Double 49 =
  13. 13.Double 81 =
  14. 14.Half of 78 =
  15. 15.Double 59 =
  16. 16.Double 91 =
  17. 17.Half of 16 =
  18. 18.Double 34 =
  19. 19.Double 71 =
  20. 20.Double 19 =
  21. 21.Half of 26 =
  22. 22.Half of 132 =
  23. 23.Half of 28 =
  24. 24.Half of 94 =
  25. 25.Half of 64 =
  26. 26.Half of 82 =
  27. 27.Double 97 =
  28. 28.Double 11 =
  29. 29.Half of 162 =
  30. 30.Half of 68 =
  31. 31.Double 78 =
  32. 32.Double 33 =
  33. 33.Double 12 =
  34. 34.Double 48 =
  35. 35.Half of 148 =
  36. 36.Double 55 =
  37. 37.Half of 172 =
  38. 38.Half of 62 =
  39. 39.Half of 14 =
  40. 40.Double 58 =

Answer key

  1. 62
  2. 198
  3. 104
  4. 134
  5. 136
  6. 42
  7. 9
  8. 21
  9. 44
  10. 46
  11. 89
  12. 98
  13. 162
  14. 39
  15. 118
  16. 182
  17. 8
  18. 68
  19. 142
  20. 38
  21. 13
  22. 66
  23. 14
  24. 47
  25. 32
  26. 41
  27. 194
  28. 22
  29. 81
  30. 34
  31. 156
  32. 66
  33. 24
  34. 96
  35. 74
  36. 110
  37. 86
  38. 31
  39. 7
  40. 116

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