简便运算怎么做?急!!!

2025-04-07 02:52:25
推荐回答(3个)
回答1:

回答2:

(2)
2.5XO.4XO.7
=1X0.
=0.7
(3)

7.68÷(0.125×80)
=7.68÷10
=78.6

回答3:

2.6*(1.01-1)=0.026