1.简便计算
1.(54+9/13)除9=54÷9+9/13÷9=6+1/13=6又1/13
2.276*2/7除27.6 =(276÷27.6)*2/7=10*2/7=20/7
3.9.25*9.9+92.5%=9.25*9.9+9.25*0.1=9.25*(9.9+0.1)=92.5
4.0.125*0.25*32=0.125*0.25*(4*8)=0.125*8*0.25*4=1
5.(6.3-6.3*0.9)除6.3=6.3÷6.3-6.3*0.9÷6.3=1-0.9=0.1
6.168.8除(24.3*2-6.4)=21.1*8÷(24.3*2-3.2*2)=21.1*8÷[(24.3-3.2)*2]=4
7.11/16+8/13-(11/16-5/13)=11/16+8/13-11/16+5/13=11/16-11/16+8/13+5/13=1
8.375+(5706-5706)除48=375
9.18*25%+1/4*60+42*0.25 =(18+60+42)*0.25=30 *****[0.25=25%=1/4]