2点5乘4点4简便计算方法

2025-04-27 11:42:11
推荐回答(2个)
回答1:

2.5×4.4
=2.5x(4+0.4)
=2.5x4+2.5x0.4
=10+1
=11

回答2:

2.5*4.4
=2.5*4+2.5*0.4
=10+1
=11