← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 682 · 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 86 =
  2. 2.Half of 102 =
  3. 3.Double 55 =
  4. 4.Double 72 =
  5. 5.Half of 172 =
  6. 6.Double 94 =
  7. 7.Double 42 =
  8. 8.Double 53 =
  9. 9.Half of 22 =
  10. 10.Half of 24 =
  11. 11.Double 75 =
  12. 12.Half of 94 =
  13. 13.Double 71 =
  14. 14.Half of 168 =
  15. 15.Double 16 =
  16. 16.Half of 164 =
  17. 17.Half of 154 =
  18. 18.Double 57 =
  19. 19.Double 31 =
  20. 20.Double 91 =
  21. 21.Double 12 =
  22. 22.Double 92 =
  23. 23.Double 58 =
  24. 24.Double 89 =
  25. 25.Half of 142 =
  26. 26.Half of 42 =
  27. 27.Double 61 =
  28. 28.Half of 132 =
  29. 29.Double 41 =
  30. 30.Half of 46 =
  31. 31.Half of 162 =
  32. 32.Double 39 =
  33. 33.Half of 128 =
  34. 34.Double 44 =
  35. 35.Double 27 =
  36. 36.Double 24 =
  37. 37.Double 64 =
  38. 38.Half of 76 =
  39. 39.Half of 104 =
  40. 40.Double 68 =

Answer key

  1. 172
  2. 51
  3. 110
  4. 144
  5. 86
  6. 188
  7. 84
  8. 106
  9. 11
  10. 12
  11. 150
  12. 47
  13. 142
  14. 84
  15. 32
  16. 82
  17. 77
  18. 114
  19. 62
  20. 182
  21. 24
  22. 184
  23. 116
  24. 178
  25. 71
  26. 21
  27. 122
  28. 66
  29. 82
  30. 23
  31. 81
  32. 78
  33. 64
  34. 88
  35. 54
  36. 48
  37. 128
  38. 38
  39. 52
  40. 136

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