← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 443 · 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.Half of 152 =
  2. 2.Half of 128 =
  3. 3.Half of 92 =
  4. 4.Half of 122 =
  5. 5.Double 21 =
  6. 6.Half of 24 =
  7. 7.Double 32 =
  8. 8.Half of 192 =
  9. 9.Half of 72 =
  10. 10.Double 71 =
  11. 11.Half of 146 =
  12. 12.Half of 102 =
  13. 13.Half of 62 =
  14. 14.Half of 114 =
  15. 15.Double 84 =
  16. 16.Half of 46 =
  17. 17.Half of 94 =
  18. 18.Half of 32 =
  19. 19.Double 89 =
  20. 20.Double 25 =
  21. 21.Half of 96 =
  22. 22.Double 99 =
  23. 23.Double 28 =
  24. 24.Half of 54 =
  25. 25.Half of 56 =
  26. 26.Double 88 =
  27. 27.Half of 136 =
  28. 28.Double 41 =
  29. 29.Double 45 =
  30. 30.Half of 164 =
  31. 31.Double 47 =
  32. 32.Double 11 =
  33. 33.Half of 22 =
  34. 34.Double 58 =
  35. 35.Half of 82 =
  36. 36.Double 39 =
  37. 37.Double 44 =
  38. 38.Half of 148 =
  39. 39.Double 43 =
  40. 40.Double 31 =

Answer key

  1. 76
  2. 64
  3. 46
  4. 61
  5. 42
  6. 12
  7. 64
  8. 96
  9. 36
  10. 142
  11. 73
  12. 51
  13. 31
  14. 57
  15. 168
  16. 23
  17. 47
  18. 16
  19. 178
  20. 50
  21. 48
  22. 198
  23. 56
  24. 27
  25. 28
  26. 176
  27. 68
  28. 82
  29. 90
  30. 82
  31. 94
  32. 22
  33. 11
  34. 116
  35. 41
  36. 78
  37. 88
  38. 74
  39. 86
  40. 62

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