Question

99×0.625+99×0.625102怎么简便

99×0.625+99×0.625102怎么简便

Answer 1

99×0.625+99×0.625102简便计算的结果为123.760098。

解：99×0.625+99×0.625102

=99x(0.625+0.625102)

=99x1.250102

=(100-1)x1.250102

=100x1.250102-1x1.250102

=125.0102-1.250102

=123.760098

扩展资料：

简便计算中的运算定律

简便计算中的运算定律有加法结合律、加法交换律、乘法结合律以及乘法分配律。

1、加法结合律

(a+b)+c=a+(b+c)

2、加法交换律

a+c=c+a

3、乘法结合律

(axb)xc=ax(bxc)

4、乘法分配律

(a+b)xc=axc+bxc

5、例题

9.8x10.1=(10-0.2)x(10+0.1)

=10x(10+0.1)-0.2x(10+0.1)

=10x10+10x0.1-0.2x10-0.2x0.1

=100+1-2+0.02

=98.98

参考资料来源：百度百科-简便计算

Answer 2

99×0.625+99×0.625+102
=99×(0.625×2)+102
=99×1.25+102
=(100-1)×1.25+102
=125-1.25+102
=123.75+102
=225.75

Answer 3

99乘以0.625+0.6251

Answer 4

99×0.625+99×0.625102
=99x(0.625+0.625102)
=99x1.250102
=(100-1)x1.250102
=100x1.250102-1x1.250102
=125.0102-1.250102
=123.760098

Answer 5

引用吴文5717的回答：
99×0.625+99×0.625+102
=99×(0.625×2)+102
=99×1.25+102
=(100-1)×1.25+102
=125-1.25+102
=123.75+102
=225.75

结果不是这个