1个回答
2016-04-23
展开全部
5×47加53×63减53×10用简便方法
=5x47+53x(63-10)
=5x47+53x53
=235+(50+3)x(50+3)
=235+2500+300+9
=3035+9
=3044
=5x47+53x(63-10)
=5x47+53x53
=235+(50+3)x(50+3)
=235+2500+300+9
=3035+9
=3044
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