1.85乘0.17加0.83乘0.83简算怎么算,得多少要算式,在下午1点半前,
问题描述:
1.85乘0.17加0.83乘0.83简算怎么算,得多少要算式,在下午1点半前,
答
你是不是题目抄错了.
1.83*0.17+0.83*0.83
=(1+0.83)*0.17+0.83*0.83
=0.17+0.83*0.17+0.83*0.83
=0.17+0.83*(0.17+0.83)
=0.17+0.83
=1