8*6.9+2.6*79.3简便算_数学解答

8*6.9+2.6*79.3简便算

人气：385 ℃　时间：2020-04-13 14:52:55

解答

7.8×6.9+2.6×79.3
=（2.6×3）×6.9+2.6×79.3
=2.6×20.7+2.6×79.3
=2.6×（20.7+79.3）
=2.6×100
=260