(0.34*7.8)÷(0.65*0.68)=0.34x7.8÷0.65÷0.68=0.34÷0.68x7.8÷0.65=0.5x(7.8÷0.65)=0.5x12=6
5.1*0.68*7.8÷(1.7*0.34*1.3)=(5.1÷1.7)÷(0.68÷0.34)*(7.8÷1.3)=3*2*6=6*6=36满意请采纳,谢谢
5.1/1.7 *0.68/0.34 *7.8/1.3=3*2*6=36
7.8÷0.65+7.8÷0.39简便算法=780/65+780/39=12+20=32
0.68÷(8.6-7.8)-0.34=0.68÷0.8-0.34=0.85-0.34=0.51
=(5.1÷1.7)*(0.68÷0.34)*(7.8÷1.3)=3*2*6=36
5.1x0.68x7.8除以(1.7x0.34x1.3)简便运算5.1x0.68x7.8÷(1.7x0.34x1.3)=5.1÷1.7x(0.68÷0.34)x(7.8÷1.3)=3x2x6=36再看看别人怎么说的.
3.5*7.8+0.65*22=3.5*(8-0.2)+0.65*(20+2)=28-0.7+13+1.3=41.6
(5.1÷1.7)*(0.68÷0.34)=3*2=6
7.8除以0.65加7.8除以0.39=7.8除以0.65加7.8除以0.39拖式计算