9.9x52怎么简便计算？
解：采用分配律，
原式=9.9x52
=（10-0.1）x52
=10x52-0.1x52
=520-5.2
=514.8
解：采用分配律，
原式=9.9x52
=（10-0.1）x52
=10x52-0.1x52
=520-5.2
=514.8
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第1个回答 2017-10-15
（10-0.1）乘52
=10乘52-0.1乘52
=520-5.2
=514.8
=10乘52-0.1乘52
=520-5.2
=514.8
第2个回答 2017-10-15
这个
第3个回答 2017-10-15
9.9×52
=(10-0.1)×52
=10×52-0.1×52
=520-5.2
=514.8
=(10-0.1)×52
=10×52-0.1×52
=520-5.2
=514.8
第4个回答 2017-10-15
9.9x52
=（10-0.1）×52
=10×52-0.1×52
=520-5.2
=514.8
=（10-0.1）×52
=10×52-0.1×52
=520-5.2
=514.8
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