问题 解答题 简便计算.①0.8×7.7+2.3×0.8②36×10.1. 答案 ①0.8×7.7+2.3×0.8,=0.8×(7.7+2.3),=0.8×10,=8;②36×10.1,=36×10+36×0.1,=360+3.6,=363.6.