"I solve the questions with a higher score first."
"I solve questions based on their score."
"I solve the questions with a higher score first."
"I solve questions" 「問題を解く」
"with a higher score first" 「配点の高い順に」
"I solve questions based on their score."
"based on ~" 「〜によって」
"their score”「配点の」
[高い順に](https://eikaiwa.dmm.com/uknow/questions/12352/)についてもっと詳しく知りたい方はクリックしてください。
オーストラリア 
