3.7x33+99x2.6=(3x1.3-0.2)x33+99x2.6=99x1.3-6.6+99x2.6=99x(1.3+2.6)-6.6=(100-1)x(4-0.1)-6.6=400-4-10+0.1-6.6=400.1-20.6=379.5
3.7x33+99x2.6=3.7x33+33x3x2.6=(3.7+7.8)x33=11.5x33=379.5
简便计算过程方法如下解:3.7×33+99×2.6=122.1+257.4=379.5