6300除以42怎样简便

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6300除以42怎样简便
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6300除以42怎样简便
6300除以42怎样简便

6300除以42怎样简便
6300除以12再除以3

=4200/42+2100/42
=100+50
=150

6300÷42
=6300÷7÷6
=900÷6
=150

先约分,同时约掉7,相当于900/6,如果还看不出来,在约掉3,就成了300/2 =150.。。吼吼

6300/7=900/3=300/2=150