← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 688 · 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 182 =
  2. 2.Double 21 =
  3. 3.Half of 174 =
  4. 4.Double 14 =
  5. 5.Half of 152 =
  6. 6.Half of 56 =
  7. 7.Double 98 =
  8. 8.Half of 62 =
  9. 9.Double 67 =
  10. 10.Double 28 =
  11. 11.Half of 128 =
  12. 12.Half of 82 =
  13. 13.Double 68 =
  14. 14.Half of 132 =
  15. 15.Half of 22 =
  16. 16.Half of 164 =
  17. 17.Double 59 =
  18. 18.Double 15 =
  19. 19.Half of 72 =
  20. 20.Half of 172 =
  21. 21.Half of 112 =
  22. 22.Double 77 =
  23. 23.Double 71 =
  24. 24.Half of 156 =
  25. 25.Half of 46 =
  26. 26.Double 78 =
  27. 27.Double 83 =
  28. 28.Double 61 =
  29. 29.Half of 92 =
  30. 30.Double 89 =
  31. 31.Half of 148 =
  32. 32.Double 16 =
  33. 33.Half of 66 =
  34. 34.Half of 142 =
  35. 35.Double 57 =
  36. 36.Half of 168 =
  37. 37.Half of 198 =
  38. 38.Double 87 =
  39. 39.Double 26 =
  40. 40.Half of 162 =

Answer key

  1. 91
  2. 42
  3. 87
  4. 28
  5. 76
  6. 28
  7. 196
  8. 31
  9. 134
  10. 56
  11. 64
  12. 41
  13. 136
  14. 66
  15. 11
  16. 82
  17. 118
  18. 30
  19. 36
  20. 86
  21. 56
  22. 154
  23. 142
  24. 78
  25. 23
  26. 156
  27. 166
  28. 122
  29. 46
  30. 178
  31. 74
  32. 32
  33. 33
  34. 71
  35. 114
  36. 84
  37. 99
  38. 174
  39. 52
  40. 81

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