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题目内容
(请给出正确答案)
123456788*123456790-123456789*123456789=()
A. -1
B. 0
C. 1
D. 2
B. 0
C. 1
D. 2
参考答案
参考解析
解析:解题指导: 尾数法,表达式中前者尾数为0,后者尾数为1,做差后尾数为9,只有-1满足尾数为9的性质,故答案选A。
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