17.5÷12.5*1.4=1.4*1.4=1.96
17*125=(16+1)x125=16x125+125=2x8x125+125=2x1000+125=2000+125=2125
7.2*1.25*1.4=9*0.8*1.25*1.4=(9*1.4)*(0.8*1.25)=12.6*1=12.6
(1)17.5÷12.5*1.4,=1.4*1.4,=1.96;(2)1.58*99+1.58,=1.58*(99+1),=1.58*100,=158;(3)4.38÷0.125÷8,=4.38÷(0.125*8),=4.38÷1,=4.38;(4)6.4*4.5+3.6*4.5,=(6.4+3.6)*4.5,=10*4.5,=45.
脱式计算17.5÷12.5*1.8 解题思路:四则运算规则(按顺序计算,先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行 解题过程:17.5÷12.5*1.8=17.5*1.8÷12.5=31.5÷12.5=2.52 扩展资料[竖
8) =4; (2)1.58 =1.96.58*100 =158.6)*4.38÷(0.1 =0(1)17.4*4.38÷0.5 =10*4.58*(99+1) =1.5 =(6; (4)6.4*1.125*0.38*0.5÷12.5*1.438.4 =1.4 =1.8 =4.6*4; (3)4.58*99+1.4+3.125÷0.5+3
17.5-17.50.2的脱式计算?17.5-17.50.2=17.5*(1-0.2)=17.5*0.8=14
17.5÷12.5*1.43=1.4*1.43=2.002
2*8*25*1252*25*8*12550*10005000
原式等于25*4*125*8=100*1000=100000~回答完毕~~\(^o^)/~祝学习进步~~~