← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 361 · 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 58 =
  3. 3.Half of 32 =
  4. 4.Double 43 =
  5. 5.Half of 18 =
  6. 6.Double 98 =
  7. 7.Half of 152 =
  8. 8.Half of 144 =
  9. 9.Half of 128 =
  10. 10.Double 18 =
  11. 11.Double 61 =
  12. 12.Half of 174 =
  13. 13.Double 66 =
  14. 14.Double 64 =
  15. 15.Double 55 =
  16. 16.Double 74 =
  17. 17.Double 88 =
  18. 18.Half of 112 =
  19. 19.Half of 138 =
  20. 20.Half of 84 =
  21. 21.Double 76 =
  22. 22.Double 24 =
  23. 23.Double 51 =
  24. 24.Half of 102 =
  25. 25.Double 79 =
  26. 26.Half of 196 =
  27. 27.Half of 26 =
  28. 28.Half of 78 =
  29. 29.Double 67 =
  30. 30.Double 14 =
  31. 31.Half of 126 =
  32. 32.Double 41 =
  33. 33.Half of 132 =
  34. 34.Half of 184 =
  35. 35.Double 21 =
  36. 36.Half of 194 =
  37. 37.Half of 178 =
  38. 38.Double 35 =
  39. 39.Half of 42 =
  40. 40.Double 52 =

Answer key

  1. 138
  2. 116
  3. 16
  4. 86
  5. 9
  6. 196
  7. 76
  8. 72
  9. 64
  10. 36
  11. 122
  12. 87
  13. 132
  14. 128
  15. 110
  16. 148
  17. 176
  18. 56
  19. 69
  20. 42
  21. 152
  22. 48
  23. 102
  24. 51
  25. 158
  26. 98
  27. 13
  28. 39
  29. 134
  30. 28
  31. 63
  32. 82
  33. 66
  34. 92
  35. 42
  36. 97
  37. 89
  38. 70
  39. 21
  40. 104

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