← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 189 · 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 49 =
  2. 2.Half of 178 =
  3. 3.Half of 104 =
  4. 4.Half of 92 =
  5. 5.Double 21 =
  6. 6.Double 82 =
  7. 7.Double 51 =
  8. 8.Double 62 =
  9. 9.Double 97 =
  10. 10.Half of 166 =
  11. 11.Half of 186 =
  12. 12.Double 36 =
  13. 13.Half of 94 =
  14. 14.Double 57 =
  15. 15.Half of 148 =
  16. 16.Half of 182 =
  17. 17.Half of 14 =
  18. 18.Half of 162 =
  19. 19.Half of 136 =
  20. 20.Half of 154 =
  21. 21.Double 91 =
  22. 22.Double 28 =
  23. 23.Half of 52 =
  24. 24.Half of 78 =
  25. 25.Half of 122 =
  26. 26.Half of 46 =
  27. 27.Double 19 =
  28. 28.Half of 142 =
  29. 29.Half of 112 =
  30. 30.Half of 62 =
  31. 31.Half of 44 =
  32. 32.Half of 22 =
  33. 33.Half of 48 =
  34. 34.Double 64 =
  35. 35.Half of 32 =
  36. 36.Double 61 =
  37. 37.Double 71 =
  38. 38.Double 14 =
  39. 39.Double 79 =
  40. 40.Half of 42 =

Answer key

  1. 98
  2. 89
  3. 52
  4. 46
  5. 42
  6. 164
  7. 102
  8. 124
  9. 194
  10. 83
  11. 93
  12. 72
  13. 47
  14. 114
  15. 74
  16. 91
  17. 7
  18. 81
  19. 68
  20. 77
  21. 182
  22. 56
  23. 26
  24. 39
  25. 61
  26. 23
  27. 38
  28. 71
  29. 56
  30. 31
  31. 22
  32. 11
  33. 24
  34. 128
  35. 16
  36. 122
  37. 142
  38. 28
  39. 158
  40. 21

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