26×15.7+15.2×24简便运算
26Ã15.7+15.2Ã24ç®ä¾¿è¿ç® 5
26Ã15.7+15.2Ã24
=15.2*26+26*0.5+24*15.2
=15.2*ï¼26+24ï¼+26*0.5
=760+13
=773追é®
26Ã15.7+15.2Ã24
=15.2*26+26*0.5+24*15.2
=15.2*ï¼26+24ï¼+26*0.5
=760+13
=773追é®
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第1个回答 2017-09-19
26×15.7+15.2×24
=26×15.2+26×0.5+24×15.2
=15.2×(26+24)+26×0.5
=15.2×50+26×0.5
=760+13
=773
=26×15.2+26×0.5+24×15.2
=15.2×(26+24)+26×0.5
=15.2×50+26×0.5
=760+13
=773
第2个回答 2017-09-19
把26拆成24+2；再用乘法分配律；你知道我在讲什么~
