← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 107 · 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 12 =
  2. 2.Half of 84 =
  3. 3.Double 66 =
  4. 4.Double 86 =
  5. 5.Double 47 =
  6. 6.Half of 152 =
  7. 7.Double 61 =
  8. 8.Half of 184 =
  9. 9.Double 42 =
  10. 10.Half of 92 =
  11. 11.Double 16 =
  12. 12.Half of 18 =
  13. 13.Half of 56 =
  14. 14.Half of 112 =
  15. 15.Double 98 =
  16. 16.Half of 164 =
  17. 17.Double 92 =
  18. 18.Double 67 =
  19. 19.Double 12 =
  20. 20.Half of 42 =
  21. 21.Double 91 =
  22. 22.Half of 162 =
  23. 23.Double 93 =
  24. 24.Half of 142 =
  25. 25.Double 37 =
  26. 26.Double 97 =
  27. 27.Half of 72 =
  28. 28.Half of 88 =
  29. 29.Half of 62 =
  30. 30.Double 41 =
  31. 31.Half of 96 =
  32. 32.Double 96 =
  33. 33.Double 46 =
  34. 34.Double 52 =
  35. 35.Half of 36 =
  36. 36.Half of 86 =
  37. 37.Double 88 =
  38. 38.Half of 52 =
  39. 39.Double 24 =
  40. 40.Half of 166 =

Answer key

  1. 6
  2. 42
  3. 132
  4. 172
  5. 94
  6. 76
  7. 122
  8. 92
  9. 84
  10. 46
  11. 32
  12. 9
  13. 28
  14. 56
  15. 196
  16. 82
  17. 184
  18. 134
  19. 24
  20. 21
  21. 182
  22. 81
  23. 186
  24. 71
  25. 74
  26. 194
  27. 36
  28. 44
  29. 31
  30. 82
  31. 48
  32. 192
  33. 92
  34. 104
  35. 18
  36. 43
  37. 176
  38. 26
  39. 48
  40. 83

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