寻找失去的数(先画树状算图,再用逆推法求).(1)32.59-______+18.26=30(2)298-(______-81.29)=89

2025-04-08 09:51:35
推荐回答(1个)
回答1:

(1)

30-18.26=11.74,
32.59-11.74=20.85;

(2)

89.66-81.29=8.37,
298-8.37=289.63.