← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 393 · 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 37 =
  2. 2.Double 27 =
  3. 3.Half of 124 =
  4. 4.Half of 24 =
  5. 5.Double 97 =
  6. 6.Double 63 =
  7. 7.Double 59 =
  8. 8.Half of 36 =
  9. 9.Half of 26 =
  10. 10.Double 64 =
  11. 11.Double 72 =
  12. 12.Double 49 =
  13. 13.Half of 112 =
  14. 14.Half of 188 =
  15. 15.Half of 164 =
  16. 16.Half of 122 =
  17. 17.Double 41 =
  18. 18.Half of 106 =
  19. 19.Double 31 =
  20. 20.Half of 34 =
  21. 21.Half of 142 =
  22. 22.Half of 194 =
  23. 23.Double 94 =
  24. 24.Double 12 =
  25. 25.Double 32 =
  26. 26.Double 69 =
  27. 27.Double 42 =
  28. 28.Half of 166 =
  29. 29.Double 89 =
  30. 30.Double 25 =
  31. 31.Double 45 =
  32. 32.Half of 48 =
  33. 33.Double 24 =
  34. 34.Half of 18 =
  35. 35.Half of 78 =
  36. 36.Half of 156 =
  37. 37.Half of 22 =
  38. 38.Half of 56 =
  39. 39.Double 91 =
  40. 40.Double 16 =

Answer key

  1. 74
  2. 54
  3. 62
  4. 12
  5. 194
  6. 126
  7. 118
  8. 18
  9. 13
  10. 128
  11. 144
  12. 98
  13. 56
  14. 94
  15. 82
  16. 61
  17. 82
  18. 53
  19. 62
  20. 17
  21. 71
  22. 97
  23. 188
  24. 24
  25. 64
  26. 138
  27. 84
  28. 83
  29. 178
  30. 50
  31. 90
  32. 24
  33. 48
  34. 9
  35. 39
  36. 78
  37. 11
  38. 28
  39. 182
  40. 32

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