3.6X2.5的简便方法

2025-04-07 17:46:55
推荐回答(4个)
回答1:

原式=(0.6的平方)x10x(0.5平方)x10=(0.6X0.5)的平方X100=0.3的平方X100=0.09X100=9

回答2:

3.6X2.5
=0.9X4X2.5
=0.9X10
=9

回答3:

=0.9*4*2.5
=0.9*10
=9

回答4:

=0.9×4×2.5
=0.9×(4×2.5)
=0.9×10
=9