← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 346 · 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 146 =
  2. 2.Double 79 =
  3. 3.Half of 106 =
  4. 4.Half of 108 =
  5. 5.Double 17 =
  6. 6.Half of 162 =
  7. 7.Double 21 =
  8. 8.Double 25 =
  9. 9.Half of 38 =
  10. 10.Double 74 =
  11. 11.Half of 98 =
  12. 12.Double 32 =
  13. 13.Half of 126 =
  14. 14.Double 47 =
  15. 15.Half of 184 =
  16. 16.Half of 104 =
  17. 17.Double 96 =
  18. 18.Half of 84 =
  19. 19.Half of 174 =
  20. 20.Half of 22 =
  21. 21.Double 16 =
  22. 22.Half of 196 =
  23. 23.Double 75 =
  24. 24.Half of 36 =
  25. 25.Double 41 =
  26. 26.Half of 68 =
  27. 27.Double 87 =
  28. 28.Half of 172 =
  29. 29.Double 39 =
  30. 30.Half of 198 =
  31. 31.Double 97 =
  32. 32.Half of 142 =
  33. 33.Double 24 =
  34. 34.Half of 62 =
  35. 35.Half of 54 =
  36. 36.Half of 32 =
  37. 37.Double 19 =
  38. 38.Half of 34 =
  39. 39.Half of 102 =
  40. 40.Double 93 =

Answer key

  1. 73
  2. 158
  3. 53
  4. 54
  5. 34
  6. 81
  7. 42
  8. 50
  9. 19
  10. 148
  11. 49
  12. 64
  13. 63
  14. 94
  15. 92
  16. 52
  17. 192
  18. 42
  19. 87
  20. 11
  21. 32
  22. 98
  23. 150
  24. 18
  25. 82
  26. 34
  27. 174
  28. 86
  29. 78
  30. 99
  31. 194
  32. 71
  33. 48
  34. 31
  35. 27
  36. 16
  37. 38
  38. 17
  39. 51
  40. 186

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