简便计算 3.6×2.7 18×0.56-1.8×10%÷10%
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3.6*0.81+0.36*1.9=3.6*0.81+3.6*0.19=3.6*(0.81+0.19)=3.6*1=3.6
原式=(10-0.1)×12.8+3.6=128-1.28+3.6=130.32
=90/1.8=50
这题不能简便计算,他们写的都不对.
42*1.63+3.6*4.2=4.2*16.3+3.6*4.2=4.2*(16.3+3.6)=4.2*20=84
将被除数与除数同时乘4
(26.4-16.4)×3.6
(7.2×3.8)÷(3.6×1.9)=(7.2÷3.6)×(3.8÷1.9)=2×2=4
6.27*3.6+37.8*0.36=6.27*3.6+3.78*3.6=3.6*(6.27+3.78)=3.6*10=36
39*0.12-1.3*3.6=30*1.3*0.12-1.3*3.6=1.3*(30*0.12)-1.3*3.6=1.3*3.6-1.3*3.6=0
解题思路:乘法分配律运算可解:乘法分配律:a(b+c)=ab+ac;解题过程:附件
3.6*0.75/3.6*0.75=3.6/3.6*0.75*0.75=3/4*3/4=9/16
3.6x9.99=3.6x(10-0.01)=3.6x10-3.6x0.01.乘法分配律=36-0.036=35.964
再答:
三点六乘以,9加3.6乘以0.9加3.6乘以0.09.再问:得数再答:357.8。
解题思路:化简小括号后,变为依次大1/2的等差数列。问题可求。解题过程:varSWOC={};SWOC.tip=false;try{SWOCX2.OpenFile("http://dayi.prced
3.6*0.75+3.6/4=3.6*0.75+3.6*0.25=3.6*(0.75+0.25)=3.6*1=3.6
3.6/10.1=36/101=(30.3+5.05+0.606+0.0404)/101+0.0036/101=0.35643564