Question

72乘99等于多少.要简便计算

速度.急急急!!

Answer 1

72*99
=72*（100-1）
=7200-72
=7128
不懂再问我我会说的详细点，祝学习进步！

Answer 2

72×99
=72×(100-1)
=72×100-72×1
=7200-72
=7128

Answer 3

72×99
=72×（100-1）
=72×100-72
=7200-72
=7128

Answer 4

72*99
=72*(100-1)
=7200-72
=7128

Answer 5

72*99=72*（100-1）=72*100-72=7200-72=7128