Question

简便算法哦

Answer 1

整个式子提出公因式258

则为258*（0.448+0.6777-0.0125）
正常括号里应该算出的是整十，所以你最好检查下题目有没有抄错
括号里面先算减法

258*（0.448+0.6652）=258*1.1132=287.2056

Answer 2

0.258×44.8+0.677×258-1.25×2.58
=2.58×4.48+6.77×2.58-1.25×2.58
=2.58×（4.48+6.77-1.25）
=2.58×10
=25.8

Answer 3

=0.258*448+0.258*677.7-125*0.258
=0.258（448+677.7-125）
=0.258*1000.7 （如果算式中0.6777中是0.677，就是0.258*1000了，结果是258）
=258.1806

Answer 4

题目抄错了吧
0.258*448+0.677*258-1.25*25.8吧？
=0.258*448+677*0.258-125*0.258
=0.258*（448+677-125）
=0.258*1000
=258

Answer 5

题中是是0.677吧？是的话:
0.258×44.8+0.677×258-1.25×2.58
=2.58×4.48+6.77×2.58-1.25×2.58
=2.58×（4.48+6.77-1.25）
=2.58×10
=25.8