Question

3.65x2.3+36.5x0.77用,简便方法计算？

Answer 1

3.65x2.3+36.5x0.77

=3.65x2.3+3.65x7.7    .............改写

=3.65×（2.3+7.7）     .............乘法的分配律

=3.65×10

=36.5

Answer 2

简便计算是直接提取公约数3.65得
3.65x2.3+36.5x0.77
=3.65x2.3+3.65x7.7
=3.65x(2.3+7.7)
=3.65x10
=36.5