23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378等于多少?请用简便算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/18 17:22:43
23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378等于多少?请用简便算23.42+46.84×0.5378×1/4+0.5378

23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378等于多少?请用简便算
23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378等于多少?请用简便算

23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378等于多少?请用简便算
用分配律:23.42+(1/4+0.75-8×0.125)×46.84×0.5378
=23.42+0
=23.42

23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378
=23.42+0.5378+[0.25*46.84+46.84*0.75]-46.84*(8*0.125)*0.5378
=23.42+0.5378*46.84-46.84*0.5378
=23.42

运用乘法分配律做:提出相同的数

23.42+46.84×0.5378×1/4+0.5378×46.84×0.75-8×46.84×0.125×0.5378
=23.42+46.84×0.5378×(1/4+0.75-8×0.125)
=23.42+46.84×0.5378×0
=23.42+0
=23.42