Question

88.88×777.78+44.44×222.22+176.66×55.555怎么巧算?

不要计算错,尽量用简便方法来做?

Answer 1

原式=88.88*777.78+88.88/2*222.22+88.88*2*55.555
=88.88*777.78+88.88*111.11+88.88*111.11
=88.88*(777.78+111.11+111.11)//乘法的分配律
=88.88*1000
=88880
像这种题目，数字之间一般有倍数关系的一般都是先化为某一个数，再用乘法的分配律。
不知上述结果能否让你满意。

Answer 2

88.88×777.78+44.44×222.22+176.66×55.555

=88.88×777.78+44.44×2×111.11+88.88×2×55.555

=88.88×777.78+88.88×111.11+88.88×111.11

=88.88×(777.78+111.11+111.11)

=88.88×1000

=88880

Answer 3

原式=88.88*777.78+88.88/2*222.22+88.88*2*55.555
=88.88*777.78+88.88*111.11+88.88*111.11
=88.88*(777.78+111.11+111.11
=88.88*1000
=88880