用简便的方法计算下面各题2.9*6.7+2.3+2.9 6.72*102g2*0.02 2.5*...

(√18+√48)(√32-√12)-(√2-√3)

2.9*6.7+2.9+2.9*2.3=2.9*(6.7+1+2.3)=2.9*10=29

亲,这样做: 2.9+2.9X6.7+23X29=2.9x(6.7+2.3)=2.9x9=26.1望采纳 谢谢我打字很辛苦的哟

=2.9*(1+6.7+2.3) =2.9*10 =29

(5/6+2/9)+(1/6+7/9)=5/6+1/6+2/9+7/9=6/6+9/9=1+1=2

2.9(1+6.7+2.3)=2.9*10=29

2.9+6.7*2.9+2.9*2.3=2.9*(6.7+2.3+1)=2.9*10=29

1.原式=0.29*(4.5+4.2+1.3) =0.29*10 =2.92.是不是0.96?原式=0.96*(38.4+61.6) =0.96*100 =96

=2.9乘(6.7+2.3+1)=29