← Doubles and halves game lesson New set →

Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 103 · 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 86 =
  2. 2.Double 12 =
  3. 3.Double 79 =
  4. 4.Half of 142 =
  5. 5.Double 67 =
  6. 6.Half of 104 =
  7. 7.Double 23 =
  8. 8.Double 15 =
  9. 9.Double 69 =
  10. 10.Double 72 =
  11. 11.Half of 158 =
  12. 12.Double 78 =
  13. 13.Half of 42 =
  14. 14.Half of 172 =
  15. 15.Double 24 =
  16. 16.Double 95 =
  17. 17.Double 34 =
  18. 18.Half of 92 =
  19. 19.Double 76 =
  20. 20.Half of 32 =
  21. 21.Double 29 =
  22. 22.Double 55 =
  23. 23.Double 48 =
  24. 24.Half of 98 =
  25. 25.Half of 114 =
  26. 26.Half of 192 =
  27. 27.Double 54 =
  28. 28.Double 27 =
  29. 29.Half of 132 =
  30. 30.Double 49 =
  31. 31.Half of 188 =
  32. 32.Double 41 =
  33. 33.Half of 62 =
  34. 34.Double 88 =
  35. 35.Half of 58 =
  36. 36.Half of 22 =
  37. 37.Double 85 =
  38. 38.Half of 52 =
  39. 39.Double 33 =
  40. 40.Half of 122 =

Answer key

  1. 172
  2. 24
  3. 158
  4. 71
  5. 134
  6. 52
  7. 46
  8. 30
  9. 138
  10. 144
  11. 79
  12. 156
  13. 21
  14. 86
  15. 48
  16. 190
  17. 68
  18. 46
  19. 152
  20. 16
  21. 58
  22. 110
  23. 96
  24. 49
  25. 57
  26. 96
  27. 108
  28. 54
  29. 66
  30. 98
  31. 94
  32. 82
  33. 31
  34. 176
  35. 29
  36. 11
  37. 170
  38. 26
  39. 66
  40. 61

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