← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 562 · 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 104 =
  2. 2.Half of 42 =
  3. 3.Double 68 =
  4. 4.Double 93 =
  5. 5.Double 19 =
  6. 6.Double 49 =
  7. 7.Double 71 =
  8. 8.Half of 22 =
  9. 9.Double 31 =
  10. 10.Double 83 =
  11. 11.Double 35 =
  12. 12.Double 48 =
  13. 13.Double 15 =
  14. 14.Half of 164 =
  15. 15.Half of 56 =
  16. 16.Half of 28 =
  17. 17.Half of 64 =
  18. 18.Half of 192 =
  19. 19.Double 79 =
  20. 20.Double 13 =
  21. 21.Half of 142 =
  22. 22.Half of 116 =
  23. 23.Double 92 =
  24. 24.Double 74 =
  25. 25.Half of 158 =
  26. 26.Half of 152 =
  27. 27.Double 17 =
  28. 28.Double 14 =
  29. 29.Half of 166 =
  30. 30.Half of 124 =
  31. 31.Double 91 =
  32. 32.Double 86 =
  33. 33.Half of 126 =
  34. 34.Double 72 =
  35. 35.Double 43 =
  36. 36.Double 29 =
  37. 37.Double 46 =
  38. 38.Half of 58 =
  39. 39.Double 33 =
  40. 40.Half of 162 =

Answer key

  1. 52
  2. 21
  3. 136
  4. 186
  5. 38
  6. 98
  7. 142
  8. 11
  9. 62
  10. 166
  11. 70
  12. 96
  13. 30
  14. 82
  15. 28
  16. 14
  17. 32
  18. 96
  19. 158
  20. 26
  21. 71
  22. 58
  23. 184
  24. 148
  25. 79
  26. 76
  27. 34
  28. 28
  29. 83
  30. 62
  31. 182
  32. 172
  33. 63
  34. 144
  35. 86
  36. 58
  37. 92
  38. 29
  39. 66
  40. 81

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