题型:口算与估算 题类:常考题 难易度:容易
河北省秦皇岛市2018-2019学年二年级上学期数学期中考试试卷
2×5= 3+4= 5+3= 3+3+3+3= 43-(7+30)=
28+4= 49-9= 62-20= 80-30= 66-8+14=
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