Make Ten - Math Puzzle

This is a simple puzzle game to complete a math expression and make ten.There are over 10,000 questions.~ How to play ~・ Insert numbers(0 ~ 9) and operators(+ - x ÷) into "?" locations in a math expression so that it makes ten. Example) 1???3 ⇒ 1+3x3・ Numbers and operators which can be used are different for each question.・ Numbers may be multi-figure. Example) 2???1 ⇒ 21-11