先按要求给下面的算式添上括号,然后再计算.(1)先减,再除,最后加:78+195÷13-10;(2)先加,再除

2025-05-23 21:28:40
推荐回答(1个)
回答1:

(1)先减,再除,最后加变为:
78+195÷(13-10)
=78+195÷3
=78+65
=143;

(2)先加,再除,最后减变为:
(78+195)÷13-10
=273÷13-10
=21-10
=11.