145乘45减45乘45的简便运算

问题描述:

145乘45减45乘45的简便运算

145X45-45X45
=(145-45)X45
=100X45
=4500

145*45-45*45
=(145-45)*45
=100*45
=4500

145乘45减45乘45
=45x(145-45)
=45x100
=4500