← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 95 · 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 64 =
  2. 2.Double 67 =
  3. 3.Double 96 =
  4. 4.Double 29 =
  5. 5.Half of 136 =
  6. 6.Half of 112 =
  7. 7.Double 34 =
  8. 8.Half of 176 =
  9. 9.Half of 128 =
  10. 10.Double 63 =
  11. 11.Double 93 =
  12. 12.Half of 124 =
  13. 13.Half of 88 =
  14. 14.Double 31 =
  15. 15.Half of 62 =
  16. 16.Double 52 =
  17. 17.Half of 172 =
  18. 18.Half of 68 =
  19. 19.Half of 42 =
  20. 20.Half of 14 =
  21. 21.Half of 52 =
  22. 22.Double 33 =
  23. 23.Half of 152 =
  24. 24.Half of 38 =
  25. 25.Double 14 =
  26. 26.Half of 72 =
  27. 27.Double 62 =
  28. 28.Half of 12 =
  29. 29.Half of 126 =
  30. 30.Double 68 =
  31. 31.Double 75 =
  32. 32.Double 41 =
  33. 33.Half of 182 =
  34. 34.Double 85 =
  35. 35.Double 59 =
  36. 36.Double 35 =
  37. 37.Double 25 =
  38. 38.Double 54 =
  39. 39.Double 61 =
  40. 40.Half of 174 =

Answer key

  1. 128
  2. 134
  3. 192
  4. 58
  5. 68
  6. 56
  7. 68
  8. 88
  9. 64
  10. 126
  11. 186
  12. 62
  13. 44
  14. 62
  15. 31
  16. 104
  17. 86
  18. 34
  19. 21
  20. 7
  21. 26
  22. 66
  23. 76
  24. 19
  25. 28
  26. 36
  27. 124
  28. 6
  29. 63
  30. 136
  31. 150
  32. 82
  33. 91
  34. 170
  35. 118
  36. 70
  37. 50
  38. 108
  39. 122
  40. 87

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