← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 194 · 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 39 =
  2. 2.Double 62 =
  3. 3.Double 99 =
  4. 4.Double 61 =
  5. 5.Half of 82 =
  6. 6.Half of 58 =
  7. 7.Half of 132 =
  8. 8.Half of 142 =
  9. 9.Half of 16 =
  10. 10.Double 26 =
  11. 11.Half of 42 =
  12. 12.Half of 166 =
  13. 13.Double 41 =
  14. 14.Half of 128 =
  15. 15.Double 53 =
  16. 16.Double 64 =
  17. 17.Half of 68 =
  18. 18.Double 85 =
  19. 19.Double 45 =
  20. 20.Double 56 =
  21. 21.Double 38 =
  22. 22.Half of 34 =
  23. 23.Half of 48 =
  24. 24.Double 65 =
  25. 25.Half of 114 =
  26. 26.Double 13 =
  27. 27.Double 44 =
  28. 28.Double 76 =
  29. 29.Double 77 =
  30. 30.Double 86 =
  31. 31.Half of 186 =
  32. 32.Half of 86 =
  33. 33.Half of 126 =
  34. 34.Half of 18 =
  35. 35.Double 78 =
  36. 36.Half of 108 =
  37. 37.Double 21 =
  38. 38.Half of 184 =
  39. 39.Half of 106 =
  40. 40.Double 51 =

Answer key

  1. 78
  2. 124
  3. 198
  4. 122
  5. 41
  6. 29
  7. 66
  8. 71
  9. 8
  10. 52
  11. 21
  12. 83
  13. 82
  14. 64
  15. 106
  16. 128
  17. 34
  18. 170
  19. 90
  20. 112
  21. 76
  22. 17
  23. 24
  24. 130
  25. 57
  26. 26
  27. 88
  28. 152
  29. 154
  30. 172
  31. 93
  32. 43
  33. 63
  34. 9
  35. 156
  36. 54
  37. 42
  38. 92
  39. 53
  40. 102

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