練習八,萬以內的加法和減法（二）,義務教育人教版三年級上冊,4,1.,8,0,1,4,5,9,7,5,1,7,9,9,0,1,9,2.先估一估，再計算下面各題。,659306 483321 806574 68527 23891 353726,965,804,1380,595,329,1079,（豎式過程略）,3.連一連。,4.,63893 697235 475126 532407