0.48×97+0.48×2+4.89÷10怎么简算

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0.48×97+0.48×2+4.89÷10怎么简算
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0.48×97+0.48×2+4.89÷10怎么简算
0.48×97+0.48×2+4.89÷10怎么简算

0.48×97+0.48×2+4.89÷10怎么简算
0.48×97+0.48×2+4.89÷10
=0.48×97+0.48×2+0.48+0.009
=0.48x(97+2+1)+0.009
=0.48x100+0.009
=48.009

=0.48x(97+2)+0.489
=0.48x(97+2)+0.48+0.009
=0.48x(97+2+1)+0.009
=0.48x100+0.009
=48+0.009
=48.009

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0.48×97+0.48×2+4.89/10
=0.48×97+0.48×2+0.48+0.009
=0.48x(97+2+1)+0.009
=0.48x100+0.009
=48.009

这个都不晓得。。。。

=0.48*97+0.48*2+0.489
=0.48*97+0.48*2+0.48+0.001
=0.48*(97+2+1)+0.001
=48+0.001
=48.001