← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 502 · 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 15 =
  2. 2.Half of 92 =
  3. 3.Double 95 =
  4. 4.Double 33 =
  5. 5.Double 31 =
  6. 6.Double 35 =
  7. 7.Half of 178 =
  8. 8.Half of 32 =
  9. 9.Half of 34 =
  10. 10.Double 28 =
  11. 11.Half of 154 =
  12. 12.Double 66 =
  13. 13.Double 47 =
  14. 14.Double 49 =
  15. 15.Half of 76 =
  16. 16.Half of 88 =
  17. 17.Half of 72 =
  18. 18.Double 14 =
  19. 19.Double 39 =
  20. 20.Half of 124 =
  21. 21.Half of 22 =
  22. 22.Half of 42 =
  23. 23.Double 57 =
  24. 24.Double 61 =
  25. 25.Double 74 =
  26. 26.Double 43 =
  27. 27.Half of 44 =
  28. 28.Half of 16 =
  29. 29.Double 96 =
  30. 30.Half of 104 =
  31. 31.Double 41 =
  32. 32.Half of 82 =
  33. 33.Half of 128 =
  34. 34.Half of 66 =
  35. 35.Double 37 =
  36. 36.Double 45 =
  37. 37.Double 13 =
  38. 38.Half of 138 =
  39. 39.Half of 162 =
  40. 40.Double 98 =

Answer key

  1. 30
  2. 46
  3. 190
  4. 66
  5. 62
  6. 70
  7. 89
  8. 16
  9. 17
  10. 56
  11. 77
  12. 132
  13. 94
  14. 98
  15. 38
  16. 44
  17. 36
  18. 28
  19. 78
  20. 62
  21. 11
  22. 21
  23. 114
  24. 122
  25. 148
  26. 86
  27. 22
  28. 8
  29. 192
  30. 52
  31. 82
  32. 41
  33. 64
  34. 33
  35. 74
  36. 90
  37. 26
  38. 69
  39. 81
  40. 196

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