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53*13/2712/55*11-12/55简便计算快快快快快快快
题目详情
53*13/27 12/55*11-12/55简便计算
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快快快快快快快
▼优质解答
答案和解析
53x13/27
=(54-1)x13/27
=54x13/27-13/27
=26-13/27
=25又14/27
12/55x11-12/55
=12/55x(11-1)
=12/55x10
=12/11x2
=24/11
=(54-1)x13/27
=54x13/27-13/27
=26-13/27
=25又14/27
12/55x11-12/55
=12/55x(11-1)
=12/55x10
=12/11x2
=24/11
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