0.3三的循环减去0.03三的循环再减去0.003三的循环等于几?

问题描述:

0.3三的循环减去0.03三的循环再减去0.003三的循环等于几?

0.3的循环是 1/3
0.03的循环是 1/30
0.003的循环式 1/300
所以答案为:
1/3 - 1/30 - 1/300 = 19/300