用简便方法计算 0.45乘5.6加4.5乘0.54减0.45
问题描述:
用简便方法计算 0.45乘5.6加4.5乘0.54减0.45
答
太简单了!就是0.45乘5.6加4.5乘0.54减0.54
=0.45乘5.6加0.45乘5.4减0.54
=0.45乘(5.6加5.4)减0.54
=0.45乘11减0.54
=4.95减0.54
=4.41