← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 757 · 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 65 =
  2. 2.Double 51 =
  3. 3.Double 89 =
  4. 4.Half of 58 =
  5. 5.Half of 166 =
  6. 6.Half of 92 =
  7. 7.Double 27 =
  8. 8.Half of 146 =
  9. 9.Half of 148 =
  10. 10.Double 25 =
  11. 11.Half of 16 =
  12. 12.Half of 42 =
  13. 13.Half of 44 =
  14. 14.Double 33 =
  15. 15.Double 44 =
  16. 16.Half of 36 =
  17. 17.Double 15 =
  18. 18.Double 76 =
  19. 19.Half of 182 =
  20. 20.Half of 66 =
  21. 21.Double 37 =
  22. 22.Half of 22 =
  23. 23.Double 87 =
  24. 24.Half of 142 =
  25. 25.Double 74 =
  26. 26.Half of 172 =
  27. 27.Double 92 =
  28. 28.Half of 112 =
  29. 29.Half of 154 =
  30. 30.Double 75 =
  31. 31.Double 81 =
  32. 32.Double 22 =
  33. 33.Double 16 =
  34. 34.Double 84 =
  35. 35.Double 35 =
  36. 36.Half of 174 =
  37. 37.Half of 198 =
  38. 38.Double 49 =
  39. 39.Half of 24 =
  40. 40.Half of 186 =

Answer key

  1. 130
  2. 102
  3. 178
  4. 29
  5. 83
  6. 46
  7. 54
  8. 73
  9. 74
  10. 50
  11. 8
  12. 21
  13. 22
  14. 66
  15. 88
  16. 18
  17. 30
  18. 152
  19. 91
  20. 33
  21. 74
  22. 11
  23. 174
  24. 71
  25. 148
  26. 86
  27. 184
  28. 56
  29. 77
  30. 150
  31. 162
  32. 44
  33. 32
  34. 168
  35. 70
  36. 87
  37. 99
  38. 98
  39. 12
  40. 93

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