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
答
145X45-45X45
=(145-45)X45
=100X45
=4500
答
145*45-45*45
=(145-45)*45
=100*45
=4500
答
145乘45减45乘45
=45x(145-45)
=45x100
=4500