8*6.9+2.6*79.3简便算
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8*6.9+2.6*79.3简便算
8*6.9+2.6*79.3简便算
8*6.9+2.6*79.3简便算
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
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
=2.6*3*6.9+2.6*79.3
=2.6*3*(7-0.1)+2.6*79.3
=2.6*(21-0.3)+2.6*79.3
=2.6*20.7+2.6*79.3
=2.6*(20.7+79.3)
=2.6*100
=260
vcv
8*6.9+2.6*79.3简便算
×2.6-9可不可以简便算
简便算
能简便的简便算.
能简便就简便算.
能简便的简便算
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