0.384*102-38.4简便计算

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0.384*102-38.4简便计算

0.384*102-38.4简便计算
0.384*102-38.4简便计算

0.384*102-38.4简便计算
0.384*102-38.4
=0.384*102-0.384*100
=0.384*(102-100)
=0.384*2
=0.768

0.384*100+0.384*2-38.4=0.768

0.384*102-38.4
=3.84*102-3.84
=3.84*(102+1)
=3.84*103
=395.52