← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 182 · 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 99 =
  2. 2.Half of 144 =
  3. 3.Half of 42 =
  4. 4.Half of 102 =
  5. 5.Half of 18 =
  6. 6.Double 85 =
  7. 7.Double 33 =
  8. 8.Half of 118 =
  9. 9.Half of 192 =
  10. 10.Double 84 =
  11. 11.Half of 28 =
  12. 12.Half of 26 =
  13. 13.Double 59 =
  14. 14.Double 15 =
  15. 15.Double 31 =
  16. 16.Double 13 =
  17. 17.Half of 172 =
  18. 18.Double 88 =
  19. 19.Half of 62 =
  20. 20.Half of 142 =
  21. 21.Double 24 =
  22. 22.Double 29 =
  23. 23.Half of 36 =
  24. 24.Half of 136 =
  25. 25.Double 38 =
  26. 26.Double 81 =
  27. 27.Double 11 =
  28. 28.Double 23 =
  29. 29.Double 82 =
  30. 30.Double 62 =
  31. 31.Double 17 =
  32. 32.Double 32 =
  33. 33.Double 58 =
  34. 34.Double 61 =
  35. 35.Half of 116 =
  36. 36.Half of 74 =
  37. 37.Half of 122 =
  38. 38.Half of 184 =
  39. 39.Double 71 =
  40. 40.Half of 98 =

Answer key

  1. 198
  2. 72
  3. 21
  4. 51
  5. 9
  6. 170
  7. 66
  8. 59
  9. 96
  10. 168
  11. 14
  12. 13
  13. 118
  14. 30
  15. 62
  16. 26
  17. 86
  18. 176
  19. 31
  20. 71
  21. 48
  22. 58
  23. 18
  24. 68
  25. 76
  26. 162
  27. 22
  28. 46
  29. 164
  30. 124
  31. 34
  32. 64
  33. 116
  34. 122
  35. 58
  36. 37
  37. 61
  38. 92
  39. 142
  40. 49

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