五十六点五乘以九点九加上五点六五的简便运算怎么解

2025-04-14 01:47:47
推荐回答(1个)
回答1:

56.5×9.9+5.65
=56.5×9.9+56.5×0.1
=56.5×(9.9+0.1)
=56.5×10
=565