几道小学简便计算7.48/5 +2.52*0.2 195/11*132/12 7/9*14/15+7/9 /15

几道小学简便计算
7.48/5 +2.52*0.2
195/11*132/12
7/9*14/15+7/9 /15

7.48/5 +2.52*0.2
=7.48*0.2+2.52*0.2
=(7.48+2.52)*0.2
=10*0.2
=2
195/11*132/12
=195÷11*132÷12
=195÷11*（12*11）÷12
=195÷11*11*12÷12
=195÷1*1
=195
7/9*14/15+7/9 /15
=7÷9*14÷15+7÷9÷15
=（7*14）÷9÷15+7÷9÷15
=（7*14+7）÷9÷15
=（7*15）÷9÷15
=7*15÷9÷15
=7÷9
=7/9

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