86.9+2.679.3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 9.5乘1.01简便 14.5乘2.8减2.8乘4.5简便 1.25乘（8加0.8)简便 3.12加3.12乘99简便3.6加2.6乘0.06简便 2.4乘1.02简便 125*8+9*8简便算 13.7×0.28×8简便算法如何算 8+72*125用简便方法算 (8+40)×125怎么算简便简便算法127*17*8怎么算? 125÷25×8怎么算简便 (125+70)*8简便方法怎么算 64.2×8加0.642×1200简便算 12×8×640的简便用算 7.8乘以6.9 +2.6乘以79.3用简便方法怎么计算用简便方法计算：1、7.8×6.9+2.6×79.3 2、24.6×4.6+2.46×44+246×0.1