0-9 ten sequence of five addition formula, each number only once 0123456789 ten numbers are filled in (), each number is used only once. () + () = () + () = () + () = () + () = () + () = () + ()

0-9 ten sequence of five addition formula, each number only once 0123456789 ten numbers are filled in (), each number is used only once. () + () = () + () = () + () = () + () = () + () = () + ()

0+9=1+8=2+7=3+6=5+4