← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 187 · 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 69 =
  2. 2.Double 61 =
  3. 3.Half of 102 =
  4. 4.Double 98 =
  5. 5.Half of 178 =
  6. 6.Half of 148 =
  7. 7.Half of 158 =
  8. 8.Double 66 =
  9. 9.Double 88 =
  10. 10.Double 33 =
  11. 11.Half of 188 =
  12. 12.Half of 142 =
  13. 13.Double 58 =
  14. 14.Half of 52 =
  15. 15.Double 73 =
  16. 16.Double 19 =
  17. 17.Half of 194 =
  18. 18.Double 18 =
  19. 19.Double 31 =
  20. 20.Double 67 =
  21. 21.Double 22 =
  22. 22.Double 38 =
  23. 23.Double 55 =
  24. 24.Double 74 =
  25. 25.Half of 94 =
  26. 26.Half of 196 =
  27. 27.Double 21 =
  28. 28.Double 79 =
  29. 29.Double 86 =
  30. 30.Double 29 =
  31. 31.Double 46 =
  32. 32.Half of 128 =
  33. 33.Double 65 =
  34. 34.Half of 48 =
  35. 35.Half of 64 =
  36. 36.Half of 186 =
  37. 37.Double 89 =
  38. 38.Half of 54 =
  39. 39.Half of 12 =
  40. 40.Half of 192 =

Answer key

  1. 138
  2. 122
  3. 51
  4. 196
  5. 89
  6. 74
  7. 79
  8. 132
  9. 176
  10. 66
  11. 94
  12. 71
  13. 116
  14. 26
  15. 146
  16. 38
  17. 97
  18. 36
  19. 62
  20. 134
  21. 44
  22. 76
  23. 110
  24. 148
  25. 47
  26. 98
  27. 42
  28. 158
  29. 172
  30. 58
  31. 92
  32. 64
  33. 130
  34. 24
  35. 32
  36. 93
  37. 178
  38. 27
  39. 6
  40. 96

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