问题描述:
要用简便算法
11.72-7.85-(1.26+0.46)
13.8x7.6-(4.29+3.31)x8.8
(0.19x5.4+2.6x0.19)x12.5
11.72-7.85-(1.26+0.46)
13.8x7.6-(4.29+3.31)x8.8
(0.19x5.4+2.6x0.19)x12.5
问题解答:
我来补答展开全文阅读