← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 460 · 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 34 =
  2. 2.Half of 168 =
  3. 3.Double 78 =
  4. 4.Double 93 =
  5. 5.Double 43 =
  6. 6.Double 85 =
  7. 7.Half of 26 =
  8. 8.Double 15 =
  9. 9.Double 17 =
  10. 10.Half of 82 =
  11. 11.Double 63 =
  12. 12.Double 11 =
  13. 13.Double 47 =
  14. 14.Half of 46 =
  15. 15.Half of 122 =
  16. 16.Double 26 =
  17. 17.Double 49 =
  18. 18.Double 95 =
  19. 19.Double 39 =
  20. 20.Double 91 =
  21. 21.Double 41 =
  22. 22.Half of 102 =
  23. 23.Half of 172 =
  24. 24.Double 67 =
  25. 25.Half of 98 =
  26. 26.Half of 198 =
  27. 27.Double 92 =
  28. 28.Double 16 =
  29. 29.Half of 74 =
  30. 30.Double 28 =
  31. 31.Double 57 =
  32. 32.Double 61 =
  33. 33.Double 71 =
  34. 34.Double 25 =
  35. 35.Half of 138 =
  36. 36.Half of 136 =
  37. 37.Double 99 =
  38. 38.Double 84 =
  39. 39.Half of 86 =
  40. 40.Half of 158 =

Answer key

  1. 17
  2. 84
  3. 156
  4. 186
  5. 86
  6. 170
  7. 13
  8. 30
  9. 34
  10. 41
  11. 126
  12. 22
  13. 94
  14. 23
  15. 61
  16. 52
  17. 98
  18. 190
  19. 78
  20. 182
  21. 82
  22. 51
  23. 86
  24. 134
  25. 49
  26. 99
  27. 184
  28. 32
  29. 37
  30. 56
  31. 114
  32. 122
  33. 142
  34. 50
  35. 69
  36. 68
  37. 198
  38. 168
  39. 43
  40. 79

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