← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 169 · 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.Half of 58 =
  2. 2.Half of 172 =
  3. 3.Double 75 =
  4. 4.Double 33 =
  5. 5.Double 14 =
  6. 6.Half of 14 =
  7. 7.Double 21 =
  8. 8.Double 94 =
  9. 9.Double 47 =
  10. 10.Half of 122 =
  11. 11.Double 55 =
  12. 12.Half of 192 =
  13. 13.Double 71 =
  14. 14.Half of 162 =
  15. 15.Double 35 =
  16. 16.Double 41 =
  17. 17.Half of 74 =
  18. 18.Double 91 =
  19. 19.Half of 194 =
  20. 20.Half of 54 =
  21. 21.Double 24 =
  22. 22.Double 56 =
  23. 23.Half of 82 =
  24. 24.Half of 28 =
  25. 25.Double 63 =
  26. 26.Double 12 =
  27. 27.Double 46 =
  28. 28.Double 27 =
  29. 29.Half of 46 =
  30. 30.Double 11 =
  31. 31.Half of 118 =
  32. 32.Half of 72 =
  33. 33.Double 66 =
  34. 34.Half of 88 =
  35. 35.Half of 62 =
  36. 36.Half of 32 =
  37. 37.Half of 18 =
  38. 38.Double 86 =
  39. 39.Double 17 =
  40. 40.Half of 78 =

Answer key

  1. 29
  2. 86
  3. 150
  4. 66
  5. 28
  6. 7
  7. 42
  8. 188
  9. 94
  10. 61
  11. 110
  12. 96
  13. 142
  14. 81
  15. 70
  16. 82
  17. 37
  18. 182
  19. 97
  20. 27
  21. 48
  22. 112
  23. 41
  24. 14
  25. 126
  26. 24
  27. 92
  28. 54
  29. 23
  30. 22
  31. 59
  32. 36
  33. 132
  34. 44
  35. 31
  36. 16
  37. 9
  38. 172
  39. 34
  40. 39

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