一年级90以内加法减法口算混合练习题五三天天练精华版（5）带答案

35+44=81-68 =43+34=82-46=42+42 =89-38 =38+38 =71-27 =44+44=86-21 =45+15 =44+28 =71-51 =38+39=81-37=4