6×6____6×4 3+5____3×5 56-20____56-2
18÷3____18÷6
I can____( do, doing) that!
(4x+5x2−1−3x−1)÷x+2x2−2x+1 ,其中x=3.
看图,将长度单位米、分米、千米、毫米、厘米填在横线上。
____ ____ ____ ____ ____
—Yes, he was the first Chinese writer ________ won the prize for children's literature.