Question

7.48*369369-3.69*748748 你会巧算吗？

用最简单的方法算出来。

Answer 1

7.48*369369-3.69*748748
=7.48*369*1001-3.69*748*1001
=7.48*369*1001-7.48*369*1001
=0

Answer 2

7.48*369369-3.69*748748
=7.48*(369*1001)-3.69*(748*1001)
=748*0.01*369*1001-3.69*748*1001
=748*(0.01*369)*1001-3.69*748*1001
=748*3.69*1001-3.69*748*1001
=0

Answer 3

原式=7.48*369369-3.69*748748
=7.48*3.69*100100-3.69*7.48*100100
=0

Answer 4

7.48*369369-3.69*748748
=7.48*3.69*100001-3.69*7.48*100001
=7.48*3.69（100001-100001）
=0

Answer 5

原式=7.48*369*1001-3.69*748*1001
=1001*(7.48*3.69*100-3.69*7.48*100)
=1001*0
=0