← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 203 · 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 67 =
  2. 2.Double 29 =
  3. 3.Double 12 =
  4. 4.Double 82 =
  5. 5.Double 89 =
  6. 6.Half of 62 =
  7. 7.Half of 46 =
  8. 8.Double 46 =
  9. 9.Half of 122 =
  10. 10.Half of 156 =
  11. 11.Double 86 =
  12. 12.Double 31 =
  13. 13.Half of 64 =
  14. 14.Double 41 =
  15. 15.Half of 134 =
  16. 16.Double 34 =
  17. 17.Double 92 =
  18. 18.Half of 92 =
  19. 19.Double 16 =
  20. 20.Double 63 =
  21. 21.Half of 76 =
  22. 22.Double 64 =
  23. 23.Half of 44 =
  24. 24.Half of 192 =
  25. 25.Double 87 =
  26. 26.Double 24 =
  27. 27.Half of 162 =
  28. 28.Half of 152 =
  29. 29.Double 27 =
  30. 30.Half of 118 =
  31. 31.Double 32 =
  32. 32.Double 21 =
  33. 33.Double 71 =
  34. 34.Half of 22 =
  35. 35.Half of 58 =
  36. 36.Half of 148 =
  37. 37.Double 35 =
  38. 38.Double 18 =
  39. 39.Double 59 =
  40. 40.Double 25 =

Answer key

  1. 134
  2. 58
  3. 24
  4. 164
  5. 178
  6. 31
  7. 23
  8. 92
  9. 61
  10. 78
  11. 172
  12. 62
  13. 32
  14. 82
  15. 67
  16. 68
  17. 184
  18. 46
  19. 32
  20. 126
  21. 38
  22. 128
  23. 22
  24. 96
  25. 174
  26. 48
  27. 81
  28. 76
  29. 54
  30. 59
  31. 64
  32. 42
  33. 142
  34. 11
  35. 29
  36. 74
  37. 70
  38. 36
  39. 118
  40. 50

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