期末检测 一、 1. 9 0.05 12.3 7.2 0.03 0.6 0.036 20 2. 3. (1) 15.6-9.29-0.71 = 15.6-(9.29+0.71 ) = 15.6-10 = 5.6 (puXUe.com) (2) 3.06÷[1.8×(2.41-1.91)] = 3.06÷[1.8×0.5] = 3.06÷0.9 = 3.4 二、 1. 北 50 2. 20.2 3. 1 0.01 0.01 4. 35 350 3500 |