← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 117 · 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 21 =
  2. 2.Double 69 =
  3. 3.Double 23 =
  4. 4.Double 18 =
  5. 5.Double 31 =
  6. 6.Half of 194 =
  7. 7.Half of 168 =
  8. 8.Half of 76 =
  9. 9.Half of 122 =
  10. 10.Double 33 =
  11. 11.Double 22 =
  12. 12.Half of 182 =
  13. 13.Double 72 =
  14. 14.Half of 166 =
  15. 15.Half of 82 =
  16. 16.Half of 148 =
  17. 17.Half of 144 =
  18. 18.Half of 188 =
  19. 19.Half of 74 =
  20. 20.Half of 48 =
  21. 21.Half of 84 =
  22. 22.Half of 26 =
  23. 23.Half of 22 =
  24. 24.Double 94 =
  25. 25.Double 32 =
  26. 26.Double 51 =
  27. 27.Double 75 =
  28. 28.Half of 142 =
  29. 29.Half of 52 =
  30. 30.Half of 92 =
  31. 31.Double 17 =
  32. 32.Half of 132 =
  33. 33.Double 96 =
  34. 34.Double 19 =
  35. 35.Half of 34 =
  36. 36.Half of 44 =
  37. 37.Double 11 =
  38. 38.Half of 116 =
  39. 39.Double 26 =
  40. 40.Half of 102 =

Answer key

  1. 42
  2. 138
  3. 46
  4. 36
  5. 62
  6. 97
  7. 84
  8. 38
  9. 61
  10. 66
  11. 44
  12. 91
  13. 144
  14. 83
  15. 41
  16. 74
  17. 72
  18. 94
  19. 37
  20. 24
  21. 42
  22. 13
  23. 11
  24. 188
  25. 64
  26. 102
  27. 150
  28. 71
  29. 26
  30. 46
  31. 34
  32. 66
  33. 192
  34. 38
  35. 17
  36. 22
  37. 22
  38. 58
  39. 52
  40. 51

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