简算题2.36×0.58+7.64×0.58+4.2
问题描述：
简算题2.36×0.58+7.64×0.58+4.2
是不是（2.36+7.64+4.2）*0.58,
答
2.36×0.58+7.64×0.58+4.2
=(2.36+7.64)×0.58+4.2
=10×0.58+4.2
=5.8+4.2
=10