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