用简便方法计算:4.58*1.25+45.8*0.035+0.458*84 *等于乘 答后有重赏

问题描述:

用简便方法计算:4.58*1.25+45.8*0.035+0.458*84 *等于乘 答后有重赏

4.58*1.25+45.8*0.035+0.458*84
=4.58*1.25+4.58*0.35+4.58*8.4
=4.58*(1.25+0.35+8.4)
=45.8