Question

3、72×99简便计算

Answer 1

3.72×99简便计算，
3.72*99
=3.72*(100-1)
=3.72*100-3.72
=372-3.72
=368.28

Answer 2

72*100-72=7200-72=7128

Answer 3

72×99+72简便方法
=72x（99+1）
=72x100
=7200

Answer 4

3.72×99
=3.72×(100-1)
=3.72×100-3.72×1
=372-3.72
=368.28
或者是
72×99
=72×(100-1)
=72×100-72×1
=7200-72
=7128