1994+997*997怎么巧算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 04:07:28
![1994+997*997怎么巧算](/uploads/image/z/3014394-42-4.jpg?t=1994%2B997%2A997%E6%80%8E%E4%B9%88%E5%B7%A7%E7%AE%97)
x)34Ѷ4g
}Ovv<ݾ6IE%l
F#!~OXN%ch``of``l_\gu
l';v;Eh+#;^9wWй.`t2I
H$F@ƙ p
1994+997*997怎么巧算
1994+997*997怎么巧算
1994+997*997怎么巧算
=997X2+997X997
=997X(2+997)
=997X999
=997X1000-997
=997000-997
=996003
法一:
1994+997*997
=997X2+997X997
=997X(2+997)
=997X(1000-1)
=997X1000-997
=997000-997
=996000+1000-997
=996000+3
=996003
法二:1994+997*997
=1994+(1000-3)*(1000-3)
=1994+1000000-6000+9
=2003+994000
=996003