56.5乘9.9加5.65简便方法怎么算

2024-11-14 13:55:28
推荐回答(4个)
回答1:

原式=56.5x9.9+56.5x0.1
=56.5x(9.9+0.1)
=56.5x10
=565

或者:原式=5.65x10x9.9+5.65x1
=5.65x(10x9.9+1)
=5.65x(99+1)
=5.65x100
=565

回答2:

56.5X(9.9+56.5/5.65)

回答3:

=56.5×(9.9+0.1)
=56.5×10
=565

回答4:

56.5*(10-1)+5.65=自己算