← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 369 · 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 84 =
  2. 2.Half of 162 =
  3. 3.Double 98 =
  4. 4.Double 55 =
  5. 5.Double 92 =
  6. 6.Double 77 =
  7. 7.Double 69 =
  8. 8.Double 71 =
  9. 9.Double 68 =
  10. 10.Half of 172 =
  11. 11.Half of 122 =
  12. 12.Double 27 =
  13. 13.Double 89 =
  14. 14.Double 79 =
  15. 15.Double 17 =
  16. 16.Half of 46 =
  17. 17.Half of 142 =
  18. 18.Half of 24 =
  19. 19.Half of 62 =
  20. 20.Double 54 =
  21. 21.Double 35 =
  22. 22.Half of 72 =
  23. 23.Half of 14 =
  24. 24.Half of 12 =
  25. 25.Double 24 =
  26. 26.Half of 42 =
  27. 27.Double 67 =
  28. 28.Double 14 =
  29. 29.Double 61 =
  30. 30.Half of 112 =
  31. 31.Double 12 =
  32. 32.Double 85 =
  33. 33.Half of 176 =
  34. 34.Double 96 =
  35. 35.Half of 152 =
  36. 36.Half of 182 =
  37. 37.Half of 192 =
  38. 38.Double 19 =
  39. 39.Double 38 =
  40. 40.Half of 184 =

Answer key

  1. 168
  2. 81
  3. 196
  4. 110
  5. 184
  6. 154
  7. 138
  8. 142
  9. 136
  10. 86
  11. 61
  12. 54
  13. 178
  14. 158
  15. 34
  16. 23
  17. 71
  18. 12
  19. 31
  20. 108
  21. 70
  22. 36
  23. 7
  24. 6
  25. 48
  26. 21
  27. 134
  28. 28
  29. 122
  30. 56
  31. 24
  32. 170
  33. 88
  34. 192
  35. 76
  36. 91
  37. 96
  38. 38
  39. 76
  40. 92

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